Wednesday, October 28, 2009

Arabswell Electrical & Electronics Engineering



Arabswell Electrical & Electronics Engineering eBooks AIO


Dielectrics in Electric Fields
Electric Machinery
Electric Machinery Fundamentals
Electric Power Distribution Equipment and Systems
Electric Power Generation, Transmission, and Distribution
Electric Power Substations Engineering
Electric Power Systems
Electric Power Transformer Engineering
Electrical Energy Systems
Electrical Engineer Portable Handbook
Electrical Measurement, Signal Processing, and Displays
Electrical Power Cable Engineering
Electrical Transmission and Distribution Reference Book
Electrical Power Systems Quality
Energy-Efficient Electric Motors, Third Edition (Electrical Engineering & Electronics)
First Course on Power Electronics and Drives
Flexible AC Transmission Systems Modelling and Control
Handbook of Modern Sensors Physics, Designs, and Applications
Handbook of Transformer Design and Applications
Newnes Electrical Power Engineers Handbook
Power electronics
Power Electronics Design A Practitioners Guide
Power System (The Electric Power Engineering)
Power System Stability and Control
Power Transformers
Practical Variable Speed Drives and Power Electronics
Radio and Electronics Co.okbook
Standard Handbook for Electrical Engineers
Synchronous Generators
The Electric Power Engineering Handbook
The Induction Machine Handbook
Transient Analysis of Electric Power Circuits Handbook
Uncertainty in the Electric Power Industry
Understanding Electric Utilities and De-Regulation
Understanding Electric_Power Systems
Variable Speed Generators


links:

Thursday, October 22, 2009

McGraw-Hill National Electrical Code 2008 Handbook, 26th Ed. (Mcgraw Hill's National Electrical Code Handbook)



Completely revised and updated to reflect all 2008 Code changes, McGraw-Hill's National Electrical Code� 2008 Handbook, 26th Edition provides the essential put-the-code-into-practice guidance that users require in the field and in the office. An industry bestseller for over 85 years, this classic handbook helps decipher and interpret new Code changes and difficult and controversial rules.. .
With the new addition of Frederic P. Hartwell to the author team, this time-tested reference has been rigorously revised and rewritten to cover all the information needed to meet 2008 Code requirements.. Covering every topic in the 2008 Code, the coverage ranges from grounded conductors, branch circuits, feeders, surge arresters, wiring methods, cables, conduits, and switches to hazardous locations, emergency systems, communications circuits, and product safety standards. McGraw-Hill's National Electrical Code - 2008 Handbook, 26th Edition features a bind-in card with a code that enables users to download the searchable e-book and the following new coverage:
. .
• New rules, terminology, and definitions that modify key grounding concepts.
• New rules for GFCIs and AFCIs.
• Fire pumps.
• Repair garage area classifications.
• Solar photovoltaic systems, including utility interactive inverters.
• Extensive coverage of how to size conductors under all loading conditions.
• Critical operations power systems (COPS)-the new Article 708 on hardened facilities
links

http://www.file2box.com/zg33iwpger2x
http://www.ziddu.com/downloadlink/6994546/-HillNationalElectricalCode2008Handbook_0071546529.pdf

PLC simulator LogixPro Prosim II



What is the LogixPro 500 PLC Simulator?

Combine our ProSim-II programmable process simulations with a PLC Editor/Emulator which mimics Allen-Bradley's (Rockwell) RSLogix 500, and you have LogixPro 500; a complete stand-alone PLC training system without the expense of a PLC.

LogixPro 500 is the ideal tool for learning the fundamentals of RSLogix ladder logic programming. The look, feel and operation of our ladder rung editor so closely mimics Allen-Bradley's world renown software offering, that many need a second look to be sure who's editor they're using. Of course the give-away is the window containing one of our ProSim-II Simulations. This is where LogixPro really out-shines typical PLC training setups employing a PLC connected to a handful of switches and lights. By graphically simulating process equipment such as conveyors etc. in software, the synchronous and interactive nature of real industrial processes, presents the student with a far more realistic and challenging programming experience.





Obtaining LogixPro 500

The full version of our LogixPro 500 Simulator is available for download and free evaluation. What that means is that you can download and try out LogixPro 500 in a 15 day Trial Evaluation mode, and make up your own mind as to whether it's the most advanced PLC Simulator and best training value on the market today. While in the Trial mode of operation, LogixPro print and file save capability are disabled, and your are limited to the use of the I/O, Door, and Silo simulations. Even with these limitations you'll still find there's no lack of fun or challenge when creating your own programming solutions for LogixPro's life like process simulations.

LogixPro now in it's sixth year of availability, during which time it has continued to be enhanced and expanded. LogixPro has become the best value in RSLogix training, only because of the great feedback and support we have received from our users. We intend to continue this process, and we'd really like to hear from you. We want you to tell us not just what you like about LogixPro, but what you would like us to add to LogixPro in order to make it even better. Whether you're an instructor assigned to teach RSLogix, a Student studying PLCs, or you're just plain interested in learning what Allen-Bradley's RSLogix is all about, then you owe it to yourself to give LogixPro 500 a try! ...

Take a look at the growing list of LogixPro Users and see what they have to say.



What does LogixPro 500 cost?

Many of today's computer-literate students are far more comfortable and likely to hone their skills at home rather than just in the classroom. In PLC training, the problem has always been, the prohibitive cost of the manufacturer's equipment and software. A simulator program as sophisticated as LogixPro may be the solution for working at home, but typically would be priced well beyond the means of the average student. As programmers, we are tempted ($$) to sell to educators or companies. As educators we prefer to see students afforded the opportunity to learn where and when they please. With this in mind, we offer LogixPro 500 configured for single computer operation, at the affordable price of $30 (US funds) per copy, or for those seeking the portability of a CD, the new LogixPro 500 CD/Key Edition is available for only $40 (US funds) in single quantities delivered to your door.

For further Purchasing Information, Click Here!

For LogixPro 500 CD/Key Edition details, Click Here!

We're convinced that you're going to find LogixPro to be one of today's great training values; but that's not all! LogixPro is going to get even better as time goes on. We will be adding additional simulations and functionality to LogixPro, and as a registered owner you'll also benefit from 12 months of free software updates, and technical support.



Schools and Training Centers

Educational and company training facilities are also welcome to download and install LogixPro onto individual computers using the above pricing. Affordable site licensing is also available which permits the unlimited use of LogixPro. You can have LogixPro installed and running on every available computer at your location for considerably less then the cost of a single hardware trainer. For networked sites, LogixPro is easily configurable for client/server operation using our free server based license administrative software. Once installed, system maintenance could not be easier, and all this using the same low pricing.

We welcome requests from identifiable instructors and training administrators for desk copies of LogixPro, and offer attractive discounts on the LogixPro CD/Key Edition when destined for in-class or bookstore distribution.If you have already adopted LogixPro for use in your courses, then please look into giving your students the convenience, and savings this option affords. Please email admin@TheLearningPit.com for current pricing and packaging details.



DownLoading the LogixPro 500 Simulator ...... (Download Now!)

LogixPro 500 makes significant use of graphics and sound, but typically clicks along at a good rate on any reasonably modern Win95/98/NT/ME/2K/XP/Vista system. A minimum display setting of 800x600 is best, and Windows' default small font setting is required. If you don't have sound, LogixPro will still operate, but you will miss out on some of the fun.

The Trial Evaluation Mode of operation is primarily intended for testing and evaluation. Keep in mind, that LogixPro has been designed to augment and enhance PLC training programs, not replace them. What LogixPro does do however; is it eliminates the dependency on having a PLC, RSLogix, and a host of electrical components in order to conduct State of the Art PLC training.

For those unfamiliar with RSLogix, we've included a sample program file for the Silo Simulation to get you started. When you have LogixPro running select the Silo Simulation, then click Load in the File Menu and select the file "silo.rsl" which is in the LogixPro directory. Once it is loaded and you can see the ladder rung program, you can then "GoOnline" and "DownLoad" the program to the PLC (emulator). At this point you can place the PLC into the "RUN" mode. If all goes well, just clicking on the silo simulations START push-button should get the whole process going. To make changes to your program, just place the PLC into the "PGM" mode to enable editing, and once complete, just "Download" again to the PLC before attempting to "RUN" again.

For additional help with RSLogix addressing or instructions, go to the LogixPro .... Student Exercises and Documentation page located on this site. Also remember to try clicking on rungs, instructions etc with your right mouse button, to find those popup editing menus etc. that have made RSLogix so popular.

Please let us know if you encounter any problems, and we'd certainly appreciate getting your impression of LogixPro as a training tool. With your help, we may just set the Standard for Affordable PLC Training.

links:
http://www.ziddu.com/download/7032621/LogixProPLC_Simulator.rar.html

Electronics: A First Course 2nd Edition



Owen Bishop's First Course starts with the basics of electricity and component types, and introduces students to practical work almost straightaway. No prior knowledge of electronics is assumed.

The approach is student centred with Self-Test features to check understanding, and numerous Activities suitable for practicals, homework and other assignments. New Multiple Choice Questions are incorporated throughout the text to aid student learning. Key facts, formulae and definitions are highlighted to aid revision, and theory is backed up by numerous examples within the book. Each chapter ends with a set of problems which includes exam-style questions with numerical answers provided.

This text is ideal for a wide range of introductory courses in electronics, technology, physics and engineering. The coverage has been carefully matched to the latest UK syllabuses including GCSE Electronics, GCSE Design & Technology, Engineering GCSE and City & Guilds competence-based courses such as Level 2 NVQs.

The second edition now has additional applicability to BTEC First Electronics from Edexcel with coverage of fundamental topics required by students of this qualification, as well as other essential new topics that reflect recent technological developments. The result is a text that meets the needs of students on all Level 2 electronics units and courses, with a broad coverage that will be of direct relevance to any reader commencing study of this subject, or more advanced readers requiring a handy revision guide. New material for the second edition includes: kinetic energy; temperature and resistance; sawtooth waveform; fundamentals of digital communication and data transmission; industrial processes; cells and batteries; wind and solar power; CDs, DVDs, mobile phones; and the latest LED technology.

Owen Bishop's talent for introducing the world of electronics has long been a proven fact with his textbooks, professional introductions and popular circuit construction guides being chosen by thousands of students, lecturers and electronics enthusiasts.

Companion website
A new companion website features animated circuit diagrams to indicate the flow of current, calculators to help with elementary electronic design project work, answers to revision questions and multiple-choice questions in the book, as well as essential circuit diagrams and illustrations from the text made available as PowerPoint slides for lecturers to use in presentations and handouts. http://books.elsevier.com/companions/0750669608

* Fully in line with current Level 2 course requirements, including GCSE Electronics from AQA and WJEC
* Now also with additional matching to the syllabus requirements of BTEC First from Edexcel
* Companion website offers student and lecturer support
links:

Robot Builder's Cookbook: Build and Design Your Own Robots



Title of ebook: The Robot Builder's Cookbook: Build and Design Your Own Robots
ISBN: 9780080554013
parent-ISBN: 9780750665568
Publisher: Newnes
Internet download file size: 13802 kb
Published: 09-2007
Released online for download: 09-10-2007
Author of eBook: Bishop, Owen
The Robot Builder's Cookbook: Build and Design Your Own Robots
Owen Bishop introduces, through hands-on project work, the mechanics, electronics and programming involved in practical robot design-and-build. The use of the PIC microcontroller throughout provides a painless introduction to programming whilst harnessing
links
The_Robot_Builder_s_Cookbook

Mechatronic Systems, Sensors, and Actuators: Fundamentals and Modeling (Electrical Engineering Handbook)


By reading, this Mechatronic Systems, Sensors, and Actuators book, which contains subject of fundamentals and its applied modeling, we assumed that book consists of the basic theory and the key Mechatronic Systems, Sensors, and Actuators: Fundamentals and Modelingconcepts about mechatronics and details various descriptions of the mathematical models of the mechanical, electrical, and fluid subsystems that comprise mechatronic systems. The advantage of this book contents is containing the various mechanical system which comprised as mechanical figures, electronic model and reviewed by exactly mathematical functions. For advanced users, this book is indexed by detailed structured discussion of the physical system which described in the logical and process way. Due to the complexity of the mechatronic system, this book covers more reviews about wireless sensors, wireless torque sensors, temperature sensor, and other applied sensors, such as oxygen sensor, motion sensor or wheelchair sensor.
Review and discussion of the fundamental physical relationships and mathematical models associated with commonly used sensor and actuator technologies complete the coverage.This book also introduces the key important elements of mechatronics and discusses new directions which describes the underlying mechanical and electronic mathematical models to be providing many mechatronic systems. Finally this Mechatronic Systems, Sensors, and Actuators book includes a detailed discussion of process of physical system modeling.

links
http://www.file2box.com/j0fsr2totutx
http://www.ziddu.com/downloadlink/6996351/Mechatronic_Systems__Sensors__and_Actuators.rar

ATS Automation Tooling Systems

provides innovative,
custom designed, built and installed manufacturing solutions to many of the world's
most successful companies. Founded in 1978, ATS uses its industry-leading
knowledge and global capabilities to serve the sophisticated automation systems'
needs of multinational customers in industries such as healthcare,
computer/electronics, automotive and consumer products. It also leverages
its many years of repetitive manufacturing experience and skills to fulfill the
specialized repetitive equipment manufacturing requirements of customers.
Through its Photowatt solar business, ATS participates in the growing solar
energy industry.

ATS employs approximately 2,400 people at 14 manufacturing facilities
in Canada, the United States, Europe, southeast Asia and China.

The Company's shares are traded on the Toronto Stock Exchange under
the symbol ATA.

links
http://www.ziddu.com/downloadlink/7022869/ATSControlCircuit.pdf

Excel by Example: A Microsoft Excel Cookbook for Electronics Engineers



Product Description
Review
"Excel by Example...shows you how you can use the ubiquitous spreadsheet application to model and analyze parts of your design...can help you become more efficient in many of the small-scale aspects of design. These aspects can take a suprisingly large amount of your time and yield many benefits when you work efficiently. The author has written for Circuit Cellar, and he must know his subject..." - EDN August 2004 "This is an excellent resource for electronics engineers (and enthusiasts), and a great guide to the use of spreadsheet programs to high-end applications. Very well written and presented." - PC Update Online, Major Keary "Anyone involved with engineering applications will find useful information in this book ... Kagan presents complete examples that show how commands work together. The author provides examples that include a voltage-to-current converter, a mean-time-between-failures (MTBF) calculator, and a voltage-regulator circuit calculator. The examples are not static. In the MTBF example, you can create "what-if" conditions that let you apply variables to see how they affect an outcome." - Jon Titus, Design News, May 15, 2006

Review
"Excel by Example...can help you become more efficient in many of the small-scale aspects of design. These aspects can take a suprisingly large amount of your time and yield many benefits when you work efficiently..." - EDN August 2004

"This is an excellent resource for electronics engineers (and enthusiasts), and a great guide to the use of spreadsheet programs to high-end applications. Very well written and presented." - PC Update Online, Major Keary

"Anyone involved with engineering applications will find useful information in this book ... Kagan presents complete examples that show how commands work together. In the MTBF example, you can create "what-if" conditions that let you apply variables to see how they affect an outcome." - Jon Titus, Design News, May 15, 2006

Book Description
Other Excel tutorials cover a range of applications, most of which are not related to electronics. This book covers all the most common uses of Excel in electronics engineering in one handy and concise volume. The CD-ROM with all the Excell worksheets that electronics engineers can use directly is a valuable design tool.

Product Description
The spreadsheet has become a ubiquitous engineering tool, and Microsoft Excel is the standard spreadsheet software package. Over the years, Excel has become such a complex program that most engineers understand and use only a tiny part of its power and features. This book is aimed at electronics engineers and technicians in particular, showing them how to best use Excel's features for computations, circuit modeling, graphing, and data analysis as applied to electronics design. Separate chapters cover lookup tables and file I/O, using macros, graphing, controls, using Analysis Toolpak for statistical analysis, databases, and linking into Excel from other sources, such as data from a serial port. The book is basically an engineering cookbook, with each chapter providing tutorial information along with several Excel "recipes" of interest to electronics engineers. The accompanying CD-ROM features ready-to-run, customizable Excel worksheets derived from the book examples, which will be useful tools to add to any electronics engineer's spreadsheet toolbox.

Engineers are looking for any and all means to increase their efficiency and add to their "bag of design tricks." Just about every electronics engineer uses Excel but most feel that the program has many more features to offer, if they only knew what they were! The Excel documentation is voluminous and electronics engineers don't have the time to read it all and sift through looking for those features that are directly applicable to their jobs and figure out how to use them. This book does that task for them-pulls out those features that they need to know about and shows them how to make use of them in specific design examples that they can then tailor to their own design needs.

*This is the ONLY book to deal with Excel specifically in the electronics field

*Distills voluminous and time-consuming Excel documentation down to nitty-gritty explanations of those features that are directly applicable to the electronics engineer's daily job duties

*The accompanying CD-ROM provides ready-to-use, fully-customizable worksheets from the book's examples

Book Info
Written specifically for electronics engineers, provides useful, time-saving Excel procedures for solving design problems, engineering computation, circuit modeling, graphing, and data analysis. Softcover.

About the Author
Aubrey Kagan is a registered professional engineer with 24 years of experience in electronics design, specializing in industrial controls. He has a BSEE from the Technion, Israel Institute of Technology, and an MBA from the University of Witwatersrand (South Africa). He has designed projects that have operated two miles underground in a mine to 600 miles above the earth in the International Space Station. He is currently a senior design engineer for Weidmuller Canada. He has written a series of tutorial articles for Circuit Cellar magazine on using Excel capabilities specifically for electronics applications, as well as numerous other technical articles.

links:
http://www.ziddu.com/downloadlink/7025594/Excel_For_Electronic_Engineer.pdf

PLC ( Beginer) Step by Steps



links

Automating with SIMATIC: Controllers, Software, Programming, Data Communication Operator Control and Process Monitoring



Hans Berger Automating with SIMATIC




links
http://www.file2box.com/z1timvtycuju
http://www.ziddu.com/downloadlink/6994545/HansBergerAutomatingwithSIMATIC.pdf

Tuesday, October 20, 2009

Homemade Easter Egg Anemometer

Homemade Easter Egg Anemometer

UPDATE 3-29-2006 ---- We are OUT OF STOCK on the surplus brushless DC motor we used to build this project, and since it's surplus we cannot get any more. The resistor and capacitor values listed in the schematic and on the PC board plan depend on using this exact same motor. You can use a different motor (for example, something salvaged from a dead hard disk drive), but many component values will change and you will have to experiment. Another option is to instead build our Bicycle Speedometer Anemometer, because that design depends on the motor only for its bearing -- the internal coils don't factor into the output frequency. Both the Otherpower.com staff and the circuit board designer are currently experimenting with new designs using surplus hard drive motors -- stay tuned, and feel free to ask questions on our Discussion Board.

UPDATE 06/20/2005 -- A fellow wind enthusiast with way more electronics knowledge than us has made up some CAD schematics of the electronics in this project, and PC board layouts. These are available free of charge farther on down in this web page. If you don't have the equipment, knowledge, or willingness to deal with etching your own PCB (we don't!), you can order one directly from him for CHEAP! Right here:
http://www.sentex.ca/~mec1995/wse/anemometer.html
UPDATE 1/1/2005 -- I'm located in the mountains at 8200 feet elevation in Colorado, USA. The UV rays here are intense, you can get a sunburn in under 30 minutes here. The Easter eggs are made of styrene(?) plastic, and they degrade in the UV up here. I got 3 years from my design, after that the plastic became very brittle and broke apart. My solution was to start using Forcefield's Item# 4201 Anemometer Cup and Hub Assembly, which is made of polycarbonate, comes already balanced, and is extremely resistant to high UV exposure.
UPDATE 12/05/2003 -- We've been building and flying Bicycle Speedometer Anemometers recently. The project is more expensive than this one, but it's simpler and easier to build. We used our Anemometer Cup and Hub Assembly to save time, and an inexpensive digital bicycle speedometer to calculate speed and acquire data. Another cool project, check it out! And you can use the pre-built cup assembly on this Easter egg anemometer project, too, to save time.

In any wind generator installation, it's critical to be able to measure wind speed. That gives you a baseline against which to measure your machine's performance, and anemometers respond much more quickly to changes in windspeed than do wind generators. Commercial anemometers are very expensive and the operational concept is pretty simple, so we decided it would be cheaper (and MUCH more fun) to build our own! Plastic Easter Egg halves made ideal (and very colorful) cups.

homemade anemometer
Our homemade anemometer...a fun project!

We chose a really neat little brushless DC permanent magnet motor as the basis for our DIY anemometer. The reason for this choice was simple...these motors contain a superb little ball bearing that would cost far more new than the entire motor cost surplus! In addition, the internal windings of the motor provide enough circuitry to calibrate the anemometer by both frequency and voltage output.

brushless DC motor
Brushless DC motor--note the really nice ball bearing!

In the past, we've built anemometers based on small DC hobby motors. While these units did work, there were problems to overcome. Most hobby motors use cheap bushings instead of bearings. The bushings tend to fail rather quickly, since they are not designed to withstand the forces put on them in an anemometer. Their voltage output is not linear with the windspeed, but instead tapers off as speeds get higher. And there is quite a bit of physical resistance in the motors, resulting in high startup speeds.

The internal circuitry of our brushless DC motor consists of 12 coils, and a permanent magnet ring that spins around them. These motors are NOT like a normal DC motor...they require a special driver circuit to make them spin. If you apply plain DC current to the motor, it will simply seek a point aligned with the coils, stop, and burn out. The motors have 3 leads...a common in the center and 2 outputs (well, actually inputs!). For connection to measuring equipment, you need only connect to the center common lead and one of the side ones. The output of the motor when spun as an anemometer can be measured with a multimeter set for AC volts, or by counting pulses with a frequency meter or BASIC stamp. We had the best results using a Fluke 87 multimeter set for measuring Hz (cycles per second). There are 12 internal coils in the motor, but we only measured the output of half the coils (since we connected to only one power lead). Therefore, a meter reading of 6 Hz equals one revolution per second (60 rpm). Both frequency and voltage readings from the motor are quite linear, making for easy calibration. The other advantage of counting frequency over measuring voltage is that the length of the data cable would affect voltage readings; when counting frequency it can be any length and the calibration will stay the same.

Internal coil layout
Internal coil layout of the brushless DC PM motor

Materials and Tools Needed:

* brushless DC PM Motor (check our products page, we do have these available surplus from time to time)
* 4 plastic Easter eggs, 2.2" dia. (use the hemispherical half)
* 3 short pieces of steel rod (we cut them from an old oven rack)
* 3 nuts to fit the steel rod
* 3 small self-tapping screws to mount the motor
* 1 piece of solid plastic for the hub, 1/4" thick, about 3" dia. (ours was Lexan�)
* 1 PVC 1 1/2" to 2" reducer
* 1 length of 1 1/2" PVC for the mast (2 ft or longer)
* 2-conductor wire for the data cable...telephone wire works great
* epoxy

Construction

To build the mount, first solder and insulate the data cable wires to the center and one of the outside terminals of the motor. Using a hacksaw, cut the wide 2" end of the PVC reducer off to leave a flat plate (about 0.4" wider than the 1 1/2" side of the reducer). Thread the wires through the reducer, and screw the DC motor mounting lugs onto this flat plate, pressing the motor into the 1 1/2" hole. It's a tight fit...we also used epoxy in addition to screws in mounting the motor, and had to bend the leads out straight to fit them in.

To construct the hub, first cut the 1/4" plastic sheet into a 3" dia. circle. We used a lathe. A hole saw would be the next best choice. If you don't have a lathe or hole saw available, remember that plastic is pretty easy to cut! You can cut it out roughly with a hand saw, chuck it to a mandrel, and spin it with a hand drill against a piece of sandpaper to make it circular. This piece does need to be perfectly circular so the anemometer will be balanced, but the exact diameter is not critical. The center hole in the hub should press fit tightly on the motor--the diameter needed is about 0.83". Since we didn't have a hole saw or bit in this size, we again used the lathe. With no lathe, it would be easiest to drill a centered hole slightly under this diameter and ream it out to a tight fit using a file or a small sanding drum on an electric hand drill. Again, the hole must be perfectly centered so the machine will be balanced. Lastly, lay out the 3 holes for the cup spokes at exactly 120 degree angles. Drill into the outside diameter of the hub with a bit sized for the steel rod you have chosen--it should again be a very tight fit. Be sure to drill all 3 holes to the same depth so hub balance is maintained.

Homemade Anemometer

To build the cups and spider, first carefully drill 2 holes into the rim of each Easter egg half, about 1/4" to 3/8" in from the edge. Be sure the holes are aligned so the egg will hang straight on the rod. Cut the 3 rods to exactly the same length, so the weight will be equal. Weld or solder a nut to the end of each rod. Slide an egg half onto each rod, align them to vertical carefully, and glue them down with epoxy on both sides. After the epoxy cures, weigh the rods on a sensitive scales and file off the solder or weld material until the weights match exactly. Rough up rod ends with sandpaper, cover with epoxy, and insert the rod/cup assemblies into the hub. Be sure they are all inserted to the same depth to maintain hub balance. I also glued the edges of the cups to the hub directly with epoxy for added strength; with longer spider arms this would not be possible.

Cover the inside hole of the hub with epoxy, and press fit it tightly onto the motor. Epoxy the 4th egg half onto the top of the hub to cover the bearing as a weather shield. We turned a groove into the hub tob to accept the egg, but it should hold with just epoxy. Thread the data cable down through the piece of pipe you've cut for the mounting mast. That's it for construction! There are many variations to this design that could work equally well, if not better...in particular, the hub could be designed in many different ways depending on the materials and machine tools you have available.

I chose the anemometer diameter of 7.4" completely arbitrarily. As is, it starts spinning at about 8 mph, which is slightly below where our wind generators start spinning. It would be nice to have it respond in lower wind speeds; for the next one I'll probably extend the spider arms an inch or so to solve this. Lighter cups and hub would also help, but I wanted this unit to be very sturdy...we get winds in excess of 100 mph up here. The Forcefield Item# 4201 Anemometer Cup and Hub Assembly works very well, and cuts hours off the time needed to complete this project.

Calibration

This is the fun part! You may wish to build a vehicle mount for the anemometer, though it can be calibrated just fine by someone other than the driver holding it out the car window, away from the car's slipstream. If you choose to calibrate it without a mount, the holder should wear thick welding gloves and eye protection in case it comes apart. DanF's anemometer calibration rig is shown below...the unit rides a good 6 ft above the truck cab, out of the truck's slipsteam and turbulance. SAFETY NOTE: THERE ARE NO POWER LINES UP HERE WHERE THE CALIBRATION WAS DONE!!!! IF THERE ARE POWER LINES IN YOUR AREA, DO YOUR CALIBRATION SOMEWHERE ELSE, or use a lower mast!!!

pickup truck calibration rig

It's essential to pick an absolutely calm day for calibrating the anemometer. Any wind will throw off your readings significantly. First, we checked my truck speedometer using a GPS receiver. It turned out to be right on, so it wasn't neccessary to use the GPS any further. We connected the data cable leads to a Fluke 87 multimeter set to measure Hertz. Radio Shack and Harbor Freight also sell some inexpensive nultimeters that count frequency, you shouldn't need to spend too much money on one. Then it's simply a matter of the driver trying to maintain constant speeds and calling out the vehicle speed to the passenger, who writes down the speed and frequency readings. We later repeated the procedure while measuring AC volts and made a chart for them too. Since there was the occasional breeze during our calibration, we took readings travelling both up and down the road, and averaged them.

Reading Wind Speed Directly
The simple solution for reading wind speed directly as mph was a quick paper template overlaid on the meter's "bar graph" display. While the numerals on the meter must be translated to get actual windspeed, the bar graph can be read directly against the calibrated paper template.

However, DanF has quite a silly fondness for large old analog meters--he wanted to watch windspeed on an excellent old 8"x10" analog microammeter (salvaged from a pH meter). The meter reads 0-500 microamps on a scale of 0-14 pH. The LM2917 frequency to voltage converter chip proved to be a perfect choice for this application...it can even drive much more powerful analog meters with no problems and minimal external circuitry. The chip costs under $3 at most electronics stores, and only 3 capacitors and 3 resistors are needed to get it working.

The LM2917 provides an output voltage proportional to the input frequency. It differs from the LM2907 in that it has an internal Zener diode voltage reference--the supply voltage can change without affecting the output. It can be used in many applications and configurations...in this case, it provides a 0-500 microamp current proportional to a frequency of about 0-90 Hz. With the anemometer design above, that means full scale (500 microamps) equals about 60 mph. DISCLAIMER: DanF is NOT an electronics expert. He still believes in 'magic smoke' inside electronics components...if you mess up and let the smoke out, it's very hard to put it back in the right places. He used extensive trial and error (plus some help from a member of the Otherpower.com message board) to get the resistor and capacitor values right...so there's no guarantee we will be able to help you if want to use this circuit in a different configuration! END DISCLAIMER. The manufacturer's data sheets for building circuits with this chip are located HERE, and have many useful charts, calculations, and schematics for possible circuits. The circuit was taken right from the 'application notes' pages. There is also an 8-pin version of the LM2917 available; the two are very similar, and the datasheet will tell you how to convert between them. All parts were purchased at Radio Shack, with the exception of the LM2917 chip--I had to go to an electronics store for it.

Frequency to Voltage converter circuit schematic

The 470 ohm resistor from pin 9 simply drops the supply voltage a bit. The circuit will work as-is from a 12-14v supply also. The meter can be any 0-500 microamp meter. The resistor from pins 10 and 5 sets the full-scale amperage for the meter...12K ohm gives you approximately full scale at 500 microamps; a trimmer pot could be added here if you want high precision. The 0.1 microfarad capacitor across the frequency input terminals is simply to filter out spurious signals...the chip is very sensitive, and will read frequencies seemly from nothing if not filtered. The other 2 capacitors and 100K ohm resistor were calculated right from the chip's datasheet....there's a chart and a formula for selecting them. All resistors are 1/4 watt.

Tony Van Roon in Canada did some CAD for us. Here are some much nicer versions of the schematic!


And here are the printed circuit board (PCB) layouts for the circuit. Feel free to use them if you have the gear for etching your own PCB (available at electronics stores or Radio Shack). You can buy the PC boards already etched right from Tony, for CHEAP. I figured my cost per hour for etching my own, and came to the conclusion that it's WAY cheaper to just order them from him:
http://www.sentex.ca/~mec1995/wse/anemometer.html


I first built the circuit on a solderless breadboard. I highly recommend this...unless you build the exact same circuit shown here and use the exact same motor for the anemometer, you'll need to adjust some or all of the component values. The breadboard makes this easy to do. Once everything is calibrated and working properly, switch the circuit over to a soldered version; PC boards are available at Radio Shack that match the connections inside the solderless breadboard. Buy a 50 cent IC socket for the chip, and solder that into the board instead of the chip itself! It could save you much grief...

Circuit built on breadboard

Circuit soldered on PC board

From your calibration procedure with the anemometer, you should have a listing of what frequency equals how many miles per hour. If your calibration was done on a windless day, it will be easy to figure out how many Hz equals how many miles per hour. In my case, it ended up that a 6 Hz frequency increase equalled a 4 mph windspeed increase. I did a final calibration check by spinning the anemometer at a constant speed, noting how many Hz were produced, and marking where on the meter this speed fell. In my case, 34 Hz = 25 mph = 4.6 pH (this was a pH meter to start with). I drew a new scale on white paper, matching the meter's, but with new tick marks for every 5 mph. I carefully glued this new scale on the meter face (being careful not to damage the needle), with the 34 Hz/25 mph/4.6 pH mark lined up as a calibration reference.

BIG 8x10 inch analog meter with new hand-drawn scale

Since I wanted the unit to be portable, it is designed to run from a 9V battery. It's been running for over a week now (in fairly windy conditions) on this battery--power use is very low! Thanks to the chip's internal voltage reference, accuracy will not degrade as the battery is discharged...it will run until power is too low, and then stop completely. Meter deflection is very crisp and defined...when a gust hits the unit, the needle jumps up quickly. The scale is completely linear, unlike DC hobby motor anemometers in which the upper part of the scale is compressed. I am VERY pleased with how this project turned out. And so far, I have not let any of the magic smoke out of any components. ;~)

DanF's house with anemometer flying high
http://www.otherpower.com/anemometer.html

Digital Power Electronics And Applications



Digital Power Electronics and Applications
Publisher: Academic Press | Pages: 900 | 2005-09-27 | ISBN 0120887576 | PDF | 4 MB

The purpose of this book is to describe the theory of Digital Power Electronics and its applications. The authors apply digital control theory to power electronics in a manner thoroughly different from the traditional, analog control scheme. In order to apply digital control theory to power electronics, the authors define a number of new parameters, including the energy factor, pumping energy, stored energy, time constant, and damping time constant. These parameters differ from traditional parameters such as the power factor, power transfer efficiency, ripple factor, and total harmonic distortion. These new parameters result in the definition of new mathematical modeling:

A zero-order-hold (ZOH) is used to simulate all AC/DC rectifiers.
A first-order-hold (FOH) is used to simulate all DC/AC inverters.
A second-order-hold (SOH) is used to simulate all DC/DC converters.
A first-order-hold (FOH) is used to simulate all AC/AC (AC/DC/AC) converters.

* Presents most up-to-date methods of analysis and control algorithms for developing
power electronic converters and power switching circuits
* Provides an invaluable reference for engineers designing power converters, commercial
power supplies, control systems for motor drives, active filters, etc.
* Presents methods of analysis not available in other books.
DOWNLOAD
http://www.ziddu.com/download/6992091/Digital_Power_Electronics_and_Applications.pdf.html
http://www.file2box.com/gezzm7c1tsbg

Monday, October 19, 2009

Handbook of Electrical Design Details


This is the second edition of the Handbook of electrical Design Details (HEDD), originally ublished in 1997. It is a well-illustrated reference book on electrical power and ighting—how it is generated, transmitted, distributed, and used. Considerable new nformation has been added in this edition but it is a smaller volume, making it more ser-friendly and easier to keep on a desk or shelf. Among the topics new to this edition re computer-aided electrical drawing (CAD), basic switch and receptacle circuit iring, outdoor low-voltage wiring, telephone and structured wiring, and electrical urge protection.

This book begins with a discussion of electrical drawing and symbols and the importance
of specifications in electrical projects. The chapters that follow cover power generation,
transmission, and distribution. Design details of generators and transformers and
their role in delivering electric power to consumers’ homes or buildings are included.
Aerial and buried service entrances are explained and illustrated, as are main panels or
loadcenters and the principles of earth grounding.
Properties of wire and cable are presented, and the dimensions and the details of basic
electrical wiring devices are described and illustrated. The rules for installing branch
circuit wiring are given along with an example of a load calculation and the reasons for
load balancing. Extensive coverage is given to lighting, lamps, and indoor and outdoor
lighting design. Other chapters explain telephone and structured wiring, electric motors,
emergency and standby electrical systems, and the essentials of surge protection.
This edition of HEDD makes many references to the National electrical Code®
(NEC®)* on all topics governed by the code, such as wiring protection, wiring methods
and materials, and standard equipment, where appropriate for reader guidance. In
the chapters on wire, cable, and wiring devices, individual drawings represent whole
classes of standard products such as switches, receptacles, and lamps, replacing the
many repetitive catalog pages that appeared in the first edition.
Each chapter begins with a content summary called “Contents at a Glance” and an
Overview of the chapter. In addition, there are separate glossaries of technical terms
at the ends of the chapters on transformers, electrical service entrance, wiring, lighting,
motors, telecommunications, emergency and standby systems, and surge protection,
for handy reference and quick memory refreshing.
This second edition of HEDD has been written in an informal descriptive style,
with minimal use of mathematics. The readers most likely to benefit from this book
are electrical contractors, electricians, and instructors. Others who will find this volume
helpful are those employed in the electrical industry in manufacturing, service,

links:http://www.ziddu.com/download/6990356/Handbook_of_Electrical_Design_Details.pdf.html
http://www.file2box.com/2ypn09vrgzvf

The Electronics Handbook


Electronics Handbook, Second Edition
Jerry Whitaker
During the ten years since the appearance of the groundbreaking, best-selling first edition of The Electronics Handbook, the field has grown and changed tremendously. With a focus on fundamental theory and practical applications, the first edition guided novice and veteran engineers along the cutting edge in the design, production, installation, operation, and maintenance of electronic devices and systems. Completely updated and expanded to reflect recent advances, this second edition continues the tradition.

The Electronics Handbook, Second Edition provides a comprehensive reference to the key concepts, models, and equations necessary to analyze, design, and predict the behavior of complex electrical devices, circuits, instruments, and systems. With 23 sections that encompass the entire electronics field, from classical devices and circuits to emerging technologies and applications, The Electronics Handbook, Second Edition not only covers the engineering aspects, but also includes sections on reliability, safety, and engineering management.

The book features an individual table of contents at the beginning of each chapter, which enables engineers from industry, government, and academia to navigate easily to the vital information they need. This is truly the most comprehensive, easy-to-use reference on electronics available.
links:http://www.ziddu.com/download/6990175/The_Electronics_Handbook_Second_Edition.pdf.html

Robot Building for Beginners



Robot Building
for Beginners
by David Cook
Published by Apress, January 2002
Now in its fifth printing!
Softcover, 568 pages
ISBN: 1893115445

Attention Readers: To access the book's resource page on this website, be sure to type the web page address from page 425 in the same upper/lower case as printed in the book.


Hey, I wrote a book!

As you can imagine, the Robot Room gets a lot of email from potential robot builders looking for advice, schematics, and answers to basic questions. So, I decided to dedicate some time and put together a great starter guide for inexperienced backyard scientists.

I'm particularly proud of the photographs in the book; over 400 of them!

In Robot Building for Beginners, not only will you learn about the basic parts and tools of robotics, but also you'll actually build a fantastic line-following robot. All the information you need is included: schematics, modular experiments, tool and part numbers, and step-by-step instructions. If you've been looking for complete instructions on building a simple, yet capable, line-following robot (Sandwich), this is your book!

You can build this robot! Click to view a movie of it in action.
Click the picture above to see an mpeg movie (696KB)

Basically, Robot Building for Beginners targets creative individuals that have the time, budget, and enthusiasm for building their own robots from scratch, but don't have the background in electronics.

Click here to order your copy, today!

Take a look at the chapter summaries that follow.

Chapter 1: Welcome Robot Inventor!

This chapter introduces robot anatomy, followed by a philosophy of building robots that may help you to be successful in happily finishing projects.


Chapter 2: Where to Obtain Tools and Parts

Here I list some of my favorite part suppliers, along with techniques for getting the most for your money.

Whenever a particular part is described, a list of suppliers is included, along with part numbers and prices. This allows you to easily follow along with the experiments, using the exact same parts I use.


Chapter 3: Safety

Rather than glossing over safety, I feel this subject is important enough to dedicate an entire chapter to it. Besides simple protective measures, I describe some product materials to avoid.

Toxic mercury switches


Chapter 4: Digital Multimeter

This chapter describes every possible multimeter feature I could find. At the end of the chapter, three actual meter advertisements are compared.

A very capable digitial multimeter

Digital multimeters are so important to robotics, that subsequent chapters provide illustrated, step-by-step instructions for using a multimeter in each stage of building and testing a robot.


Chapter 5: Numbers and Units

Have you ever wondered about the numbering scheme of certain parts? This chapter details some common measurement units and methods of labeling small parts.


Chapter 6: Robot Line-Following

With this chapter, so begins the heart of the book, with the introduction of Sandwich, the line-following robot. A detailed tour is made of the features, dials, and switches on Sandwich. You, too, can build this cool and capable robot!

Sandwich, the line-following robot


Chapter 7: Nine-Volt Batteries

Nine-volt batteries are quite popular with smaller, lunchbox-size robots. A comparison of common battery chemistries is made, along with revealing the manufacturer that stuffed their battery with polystyrene foam. The shock! The horror!

Something skwewy is going on around here


Chapter 8: Clips and Test Leads

No legitimate robot designer should be without a few pairs of alligator clips and hook test leads. Here you'll learn how to test them with the continuity mode on a multimeter.


Chapter 9: Resistors

This chapter describes the function of a resistor, in plain, simple terms. Step-by-step instructions are provided to test a resistor in the ohm-mode of a multimeter.

Testing a resistor with a multimeter


Chapter 10: LEDs

The LED chapter was a blast to take photographs for. You'll learn about the different selection criteria for LEDs, including the brightness myth. And of course, you'll see how to test LEDs.

Anatomy of an LED


Chapter 11: Power On!

At this point in the book, you have everything you need to make a power-indicator circuit. A simple schematic is included, with a complete explanation of each element.


Chapter 12: Solderless Prototyping

Prototyping a circuit is a must. The process is painless with a solderless breadboard. Also covered in this chapter are: wire strippers, solid wire, jumpers, and pliers.

Non-serrated needle-nose pliers


Chapter 13: Solderless Breadboard Setup

A good setup for your breadboard is to connect a rechargeable 9 V battery and a switch, extend the buses, and add a power indicator. This chapter shows you how to do it, along with methods of testing voltages throughout the board with a multimeter.

Solderless breadboard ready for action


Chapter 14: Variable Resistors

Now that you've prepared your breadboard, you can start experimenting with circuits that are too complicated for alligator clips. This chapter details variable resistors, such as fine-tuning potentiometers and photoresistor sensors.

Just like the Robot Room web site, each circuit described in this book is first shown in schematic (or wire diagram) form and then illustrated on an actual breadboard.

Solderless breadboard with line-following photoresistor sensors


Chapter 15: Comparators

A comparator is a really useful chip. Often it is a supplemental component used to preprocess sensor data for a microcontroller on a robot. In this case, the comparator is the brain of the line-following robot.

The comparator's decision-making process as indicated by the flow of electricity


Chapter 16: Transistor Switches

A working knowledge of transistors is necessary to drive robot motors. Instructions to test a transistor are covered, as well as NPN and PNP bipolar test circuits you can build if your multimeter doesn't have a transistor test socket.

PNP 2N2907A bipolar transistor


Chapter 17: DC Motors

What robot book would be complete without a close look at DC motors? This gave me an excuse to obtain and dissect a number of different motors and gearheads. (I was even able to put most of them back together again.)

Possibly the longest chapter in the book, it lists the many characteristics of motors and how you might go about selecting the proper motors for your robot. A table provides formulas for converting between different units of rotational force (torque). Learn about the significance and phases of motor current usage.

Oscilliscope trace showing various stages of motor current

Gears, gearhead motors, and gear ratios are also described.


Chapter 18: Adding Gearhead Motors

In this chapter, a particular gearhead motor is selected for the line-following robot. Additionally, flyback diodes are added for the protection of the transistors.

Gearhead motor exposed


Chapter 19: Wheels

From motors, we move on to wheels. The type of wheel makes a bigger difference to a robot than most people think. This chapter describes some of the factors to consider, along with my favorite wheel manufacturer.

The LEGO collection


Chapter 20: Coupler

If you're fortunate enough to find a matching set of wheels and motors suitable for your robot, then attaching the wheel to the motor shaft isn't a problem.

Usually though, there's a part, called a coupler, that's needed to connect the wheel to the motor. The couplers I make are compatible with LEGO wheels and gears. I use this kind of coupler on nearly all of my robots. In fact, many people joke that they first look for the coupler whenever I present one of my robots.

Coupler being drilled

After you read this chapter, you'll learn the simple secrets to making a coupler yourself. And, as always, step-by-step instructions are provided.


Chapter 21: Soldering Equipment

You can only proceed so far in robot building without soldering. Although it can seem intimidating, it's easy with a little practice and encouragement.

This chapter describes some popular soldering tools and supplies, such as a soldering iron, stand, sponge, desoldering bulb, flux, and (of course) solder.


Chapter 22: Soldering and Connecting

You won't want to solder everything together on your robot. In fact, some parts are best left to removable connectors. This chapter describes my personal favorite, the Molex KK-series connector, along with the pieces and tool you need to attach connectors to your robot.

Molex KK connector

This chapter also begins the soldering process for the line-following robot. Heat-shrink tubing, the hallmark of a professional, is also discussed.


Chapter 23: The Motherboard

The soldering section finishes with the complete schematic of the line-following robot. The choice of point-to-point wiring versus printed-circuit boards is covered, as well as expert tips for successful soldering.

At the end of this chapter, I list some quick techniques for verifying the quality of a circuit board BEFORE connecting it to power.

Underside of circuit board with point-to-point wiring


Chapter 24: Body Building

Few designers put enough time into selecting or making their robot's body. This chapter discloses a timesaving, yet uncompromising, body material. An easy technique for cutting holes in plastic is explained.

The more complicated process of making an aluminum base

Also discussed: standoffs, screws, nuts, washers, nutdrivers, switch hardware, and acetone.


Chapter 25: Launching the Line-Follower

Tweaking and adjusting often make the biggest difference between an ordinary robot and a great robot. This chapter describes simple trials for your line-following robot to complete, and possible corrections if your robot doesn't match the behaviors and values listed for mine.

Frame by frame analysis shows how the line-following robot is able to follow both light and dark lines. The limiting factors are revealed, as well as interesting ideas for enhancements. This is one of my favorite chapters.

Sandwich following a light line on a dark floor


Chapter 26: Encore

Where do you go from here?

There are lots of interesting, but more complicated, robotic components that can be pursued for more advanced robots. This chapter describes some of the parts you may want to use on your next robot.

Tilt sensor

This chapter also discusses some wacky project ideas and some of the autonomous-robot contests held throughout the United States.


Appendix:

The book ends with a discussion of Ohm's Law, the different names for positive and negative voltage, and the things I accidentally destroyed while making the book.


The book was a lot of fun to write. I think you will enjoy reading it.
links
http://www.file2box.com/mwb7yi8iuuwg

Control Techniques Drives and Controls Handbook





Commissioned by the Institute of Engineering and Technology, the 2nd edition of the Control Techniques ‘Drives and Controls Handbook’, edited by Professor Bill Drury, is to be launched on 6 July this year. The handbook gives a state-of-the-art insight into the technology and techniques of AC and DC motor control, from basic theory through to practical solutions.

This book replaces the edition published in 2001 and according to Professor Drury, “Very little of the last edition has made it into the new one without at least some modification and there has also been a lot of entirely new subject material included.” This comprehensive and highly practical work runs over 750 pages and retails at £80; however you can get 20% off when buying it through the IET by visiting http://www.driveshandbook.com/ first.

Drives and Controls HandbookThe handbook draws upon Control Techniques’ extensive engineering expertise in this field but encompasses all aspects of variable speed control applicable to all manufacturers’ equipment, including AC/DC industrial motors, servo control, communications and system design.

Recognising that the handbook is used in a significant number of Universities as well as by industrial users, Professor Drury has added new sections covering basic electromagnetic and motor theory. New developments in areas including power semiconductors, functional safety and control have also been included.


A detailed consideration is given to the ambient conditions which influence the specification of a drive and associated equipment through to the characteristic impacts of drives. Guidance on EMC, harmonics, thermal management, cabling and fusing have all been significantly updated, including changes to international regulations.

links: http://www.file2box.com/r3xbtzswoy4n

Wiring Systems And Fault Finding For Installation Electricians


Brian Scaddan's guides to the IEE Wiring Regulations have established themselves as an industry standard. This book deals with an area of practice which many students and non-electricians, such as plumbers, heating engineers, television and intruder alarm installers, find particularly challenging. For anybody who needs to be able to trace faults in circuits - whether in domestic, commercial or industrial systems, Brian Scaddan explains how to interpret circuit diagrams, wiring systems and the principles and practice of testing and fault diagnosis.
The new edition is entirely up-to-date with the 17th Edition Wiring Regulations In addition, the page design has been improved and colour has been added.
Brian Scaddan is an honorary member of City & Guilds and has over 30 years' experience in Further Education. He is now Director of Brian Scaddan Associates, Engineering Training Consultants.
* Fully up-to-date with the 17th Edition IEE Wiring Regulations (BS 7671: 2008)
* Covers all the principles and practice of testing and fault diagnosis in a way that is understandable for students and non-electricians
* Content you can trust - Brian Scaddan's guides to the Wiring Regulations are long-established and bestselling industry standards
Publisher: Newnes
Author: Brian Scaddan,
Edition Number: 4
Language: English
ISBN: 0750687347
EAN: 9780750687348
No. of Pages: 119
Publish Date: 2008-06-30
Binding: Paperback
Deliverable Countries: This product ships to United Arab Emirates, Australia, Belgium, Bahrain, Switzerland, China, Germany, Spain, Finland, France, Hong Kong, Indonesia, India, Japan, Kenya, Kuwait, Sri Lanka, Malaysia, Netherlands, New Zealand, Russia, Saudi Arabia, Singapore, Thailand, South Africa.

links:
http://www.file2box.com/8sjfd9wy10n1

Troubleshooting Switching Power Converters



Power Supply design is all about detail. And a large part of that detail lies in the practical domain, largely because of the typically small number of microseconds of switching periods involved, and the even smaller tens of nanoseconds of switch transition times --- all these, in effect accentuating various "second-order" effects, that eventually end up playing prime havoc with "normal" expectations of how the circuit should behave. So not unsurprisingly, even after reading several books, most readers still find themselves no closer to the ultimate goal of designing an actual power supply.
Sooner or later, all engineers start realizing the hard fact that designing a switching power supply isn't the trivial task it once seemed to be. But even after years of successfully mastering the underlying theory, the ultimate goal of creating a cost-effective, reliable and commercially viable power supply may still remain a distant dream, since success ultimately hinges on experience. That is, in fact, what clearly differentiates a senior and seasoned power supply engineer from the others --- the ability to navigate and surmount a veritable minefield of tricky issues that can only be learned the hard way, by actual hands-on experience on the job.
This book presents practical knowledge the author acquired rather painfully, while working "in the trenches" for several years in major engineering companies scattered across several continents. This is intended to be the mythical senior engineer's "bag of tricks," finally made available in the form of an easy-to-read book on your shelf. This book will make life for the ambitious power supply engineer much simpler --- besides reducing significantly, the rigorous requirement of having to be a senior engineer's protégé for years on end, just to gain a small measure of real success in this field.
* A practical presentation that answers the important question: why is my switching converter behaving so differently than what I was expecting on the basis of my paper design? And how do I bridge that huge gap?
* For the first time, a systematic and thorough discussion of troubleshooting switching power supplies.
* Coverage of AC/DC and DC/DC power supplies.
* Bench Evaluation of semiconductor ICs used in power conversion --- describing standard and unusual techniques mastered by the author, while testing similar chips at National Semiconductor.
* Detailed coverage of vital topics that haven't been covered by available sources --- grounding systems, the subtleties of component datasheets, and using instruments and probes effectively.
* Systematic investigation (type of failure mechanism, topology, etc.) and solutions for 5 years of reported power supply issues on a prominent, public web forum. This approach will ensure that engineers will not repeat the same mistakes.
* A unique, readable style: personal and direct; no mystification--- just the plain truth, easily and logically explained, with plenty of pictures, graphs and plots.

links:http://www.file2box.com/8sjfd9wy10n1

Yaskawa Electric America

Yaskawa Electric America provides Industrial Control and Automation products to markets in the Americas. Yaskawa is the world’s largest manufacturer of ac drives and motion control products, including adjustable frequency drives, servo amplifiers, servomotors, machine controllers, and motion controllers.

This website supports North, Central and South America. If you are outside the Americas, use Global Sites to find information that brings our global products and services closer to you.
...
AC Drives (Industrial) Cluster

Industrial AC Drives
This group of Adjustable Frequency Drives and Inverters control the speed of AC induction motors in factory automation processes and industrial OEM machines.

Commercial HVAC Drives

Commercial HVAC Drives
These Variable Frequency Drives are designed specifically for Building Automation Systems, air handlers, cooling towers, and other commercial fan and pump applications.

iQpump Controller

iQpump Controllers
The iQpump controllers are designed with the pump service operators and pump system owners in mind, offering ease of setup and comprehensive pump and motor protection features.

Spindle Drives and Motors Cluster

Spindle Drives and Motors
These Spindle Drives and Motors are designed specifically for high-speed spindles in machine tool applications.

AC Servo Systems and Motion Controllers Cluster

Servo Systems and Motion Controllers
Our brushless AC servos, digital amplifiers, linear motors, direct drive motors, and servo gearmotors provide high performance motion control. Single-Axis and Multi-Axis Motion Controllers are designed for stand-alone, networked, and coordinated motion of Industrial Machines.

Medium Voltage Switches Cluster

Medium Voltage Switches, Breakers, and Contactors
Our Medium Voltage Switches include distribution-class switches, circuit breakers, and magnetic contactors for electric utility and large industrial applications.

Low Voltage Switches Cluster

Low Voltage Industrial Control
These switches include the Bestact Reed Elements, relays, proximity sensors, push-buttons, and other control devices.

Industrial Robot

Motoman Industrial Robots
Motoman delivers innovative robotic automation solutions for virtually every industry and robotic application, including arc welding, assembly, clean room, coating, dispensing, material cutting (laser, plasma, waterjet), material handling (diecast, machine loading, packaging, palletizing, part transfer, press tending), material removal (deburring, polishing, sanding) and spot welding. Motoman is a subsidiary company of Yaskawa Electric America.


Imported Product Support
We provide domestic support for Systems engineered and sold in Japan for installation in specific American facilities.

Yasnac (CNC) Support
We provide continuing service for parts and repair to Yaskawa products on CNC Machines.

links:http://www.file2box.com/94009vdk27ws

Airtac Pneumatic

Airtac Pneumatic is a Taiwanese pneumatic company with large production facilities on the mainland of China. The productrange concludes what people in Europe would call the older standard range of cylinders, valves, FRL and fittings.

For Pneumission Pneumatic Airtac Pneumatic is a highly respected pneumatic company, who has the biggest production plant in the Zhejiang province

If you want more information about Airtac Pneumatic please visit their website:
http://www.airtacworld.com/
Air Prep UnitFRL SMC equivalents (Old Style)
Air Prep UnitFRL SMC equivalents (Old Style) Note:
AC FRL (AC1000~AC5000)
AC FR+L (AC1010~AC5010)
AW filter regulator (AW1000~AW5000)
AF filter (AF1000~AF5000)
AR regulator (AR1000~AR5000)
AL lubricator (AL1000~AL5000)
Air Prep UnitFRL SMC equivalents (New Style)
Air Prep UnitFRL SMC equivalents (New Style) Note:
AC FRL(AC10~AC50)
AC FR+L (AC10A~AC40A)
AW filter regulator (AW10~40)
AF filter (AF10~AF50)
AR regulator (AR10~AR50)
AL lubricator (AL10~AL50)
Air Prep UnitFRL Series Q, High pressure applicat
Air Prep UnitFRL Series Q, High pressure applicat Note:
* Air filter, regulator and lubricate
* Clean looking, modular design
* Energy saving with high flow rate
* Rc(PT), G(PF) or NPT threads, port sizes:1/4"~11/2"
Air Prep UnitFRL Series Q, General pressure appli
Air Prep UnitFRL Series Q, General pressure appli Note:
* Air filter, regulator and lubricate
* Clean looking, modular design
* Energy saving with high flow rate
* Rc(PT), G(PF) or NPT threads, port sizes:1/4"~11/2"
links:http://www.file2box.com/nmidjpcsdlzi
http://www.ziddu.com/download/6989093/Switching_Power.pdf.html

Friday, October 16, 2009

PLC Simulator Software

There are several PLC simulator softwares available for free download :

1. TRiLOGI PLC Simulator from Tri-PLC.com.

The “TRiLOGI” is a ladder+BASIC programming software for the E, H and M-series of PLCs. All TRiLOGI versions have built-in Simulator which allows ladder or ladder+BASIC program to be simulated on a PC without purchasing the PLCs. THis software is useful tool for learning basic PLC programming. Educational versions of the TRiLOGI software are free for download by completing form register.

Download : link

2. PSIM PLC Simulator from Thelearningpit.com

PSIM is actually three distinct programs combined into a single package. First, PSIM contains a PLC Ladder Logic editor that allows users to create and edit PLC programs using Allen Bradley PLC-2 family instructions. Secondly, PSIM emulates the scanning sequence of a PLC. When placed into the “RUN” mode, the users program is scanned and the appropriate I/O is updated just as would occur in an actual PLC. Thirdly, PSIM contains a number of animated simulations which respond accurately to the inputs, and outputs of the emulated PLC. A conveyor based filling line, Traffic intersection and Batch mixing simulations present life-like challenges for the student programmer.

The PSIM software includes a full-featured built-in PLC emulator package that runs concurrently on the same computer with the Industrial applications software (simulations) described above.

With a single keystroke, the user may toggle back and forth between the display of the animated process simulation and the Ladder Rung Program Editor of the emulated PLC.

The Program Editor is both user friendly and full-featured. Students may add, delete and modify program-rungs, branches and instructions using simple menu selections.
To test the new or modified ladder program, a single keystroke toggles the student back to the Process Simulation screen and places the PLC in the ‘Run’ mode. The process simulation will then react accurately to the student’s newly programmed rungs which are constantly being scanned in the background by the PLC run-time emulator.

By incorporating the Editor and run-time scanning of a PLC into software capable of running and interacting with the industrial process simulations, PSIM provides a single computer hi-tech solution to Programmable controller student training, whether running on the network of a computer Lab, or on the users own laptop computer. The PSIM system allows a simple low-cost solution to PLC training while attaining superior student concept retention.



SOFTWARE SPECIFICATIONS:

Industrial Applications Software (Simulations):
The PSIM software includes the following simulated processes:

(1) Automated filling system
* Operator Station Panel and controls
* Conveyor with position sensors (photo switch)
* Hopper with motorized chute control
* Product Level Sensor
* Conveyor Motor
* Visual PLC Data Table Display including timers and counters
(2) Batch Mixing system Simulation
(3) Intersection Traffic Light Control Simulation
(4) Hardware Input and Output Simulator

Download : link

3. LADSIM Simulator from Bytronic.co.uk

LADSIM is a fully functional ladder logic design and PLC simulation software program that incorporates the basic functions used in PLC ladder programming. LASIM utilises your existing PC turning them into virtual PLCs.

LADSIM includes a visual editing environment for graphical programming. A simple ‘drag and drop’ method is used to add functions to the ladder rung, and comments can be added to each rung for documentation purposes. LADSIM functions include inputs, outputs, timers, counters, flags and shift registers. An interactive debugger is included allowing the program to be fully tested before being used to control a specific application.

LADSIM incorporates eight internal simulations; Annunciator, Traffic Light, Car Park, Elevator, Drinks Machine, Packing Line, Bottling Plant, based on actual automated systems, and the Industrial Control Trainer (ICT3). Each simulation is designed to aid and test the student’s knowledge of programming in ladder logic.

LADSIM also has the ability to be connected to external devices through a suitable interface. A simulation is included of the Bytronic Industrial Control Trainer allowing students to develop the skills required to control an actual device. The student then moves on to control the Industrial Control Trainer through the real I/O capabilities of LADSIM. The internal simulations can also be controlled from a PLC, providing the student with the opportunity safely to test
their subsequent PLC programming skills.

Download : link

4. 505 Simulator

505 Simulator™ allows 505 programmers to program, run, and test 505 ladder logic, special functions, PID loops, Analog alarms, and simulated I/O without the use of a PLC. It is the only software of its kind available for Siemens 505™ PLCs. This demo software must be used in conjunction with PLC WorkShop for Siemens 505 v4.00 or higher.



505 Simulator seamlessly integrates with PLC WorkShop™ for Siemens 505 making it convenient to use. Testing and debugging 505 programs without such a tool would take days. With the simulator, these tests can be accomplished in minutes—without the need for expensive hardware.

When a program is online with 505 Simulator, the simulator responds in a similar manner to the type of PLC that is being simulated. Programs may be loaded, saved, edited, and executed while online with the simulator. In addition, the simulator allows the specific state that has been created to be saved.

505 Simulator offers:

* Step Debugging, controlled I/O simulation, and regression testing
* Logic simulation from any Siemens Simatic® / TI PLC with preset configuration for all 545 and 555 PLCs, 1101 – 1106
* Seamless integration with PLC WorkShop for Siemens 505
* Compatibility with Windows® 98, NT, 2000, XP, and Vista

Download : link

5. RSLogix™ PLC Trainer from BIN95.com

The PLCTrainer version 4.32 uses RSLogix ™ ladder logic look and feel and now includes analog instruction, an area that has been overlooked by most PLC training materials. LogixPro ™, an ideal tool for learning the fundamentals of RSLogix ™ ladder logic programming.

The look, feel and operation of our ladder rung editor so closely mimics Allen Bradley’s latest software offering, that many need a second look to be sure who’s editor they’re using.

This “virtual PLC” environment or PLC Simulator allows the learner to apply the knowledge gained in The PLCTrainer without the expense of purchasing RSLogix or even a PLC.

This new PLC Training Software runs on Windows ME, NT, 2000, XP and Windows Vista. If your equipment has any of the following example Micrologix 1000, SLC 500 and PLC 5 PLC model numbers, you can benefit from this training. (all series 1747, 1771 and 1761)

1761-L10BXB, 1761-L32AWA, 1761-L32BWA, 1747-L20, L30, L40, 1747-L511, 1747-L521, 1747-L532, 1747-L541, 1747-L552, 1771-*, 1785-L20B, 1785-L30, 1785-L40, 1785-L60, 1785-L80 etc.

Download : link


Wednesday, October 7, 2009

Electrical Energy Systems


The growing importance of renewable energy sources, control methods and mechanisms, and system restoration has created a need for a concise, comprehensive text that covers the concepts associated with electric power and energy systems. Electrical Energy Systems fills that need, providing an up-to-date introduction to this dynamic field. The author begins with a discussion of the modern electric power system, centering on the technical aspects of power generation, transmission, distribution, and utilization. After providing an overview of electric power and machine theory fundamentals, he offers a practical treatment-focused on applications-of the major topics required for a solid background in the field, including synchronous machines, transformers, and electric motors. He also furnishes a unique look at activities related to power systems, such as power flow and control, stability, state estimation, and security assessment. A discussion of present and future directions of the electrical energy field rounds out the text. With its broad, up-to-date coverage, emphasis on applications, and integrated MATLAB scripts, Electrical Energy Systems provides an ideal, practical introduction to the field-perfect for self-study or short-course work for professionals in related disciplines.
Links:
http://www.file2box.com/q1mjfb7lpbal


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SYSMAC CPM1A Programmable Controller

CPM1A Programmable Controller

Download Product Brochure

* Ordering information

* Specifications

* Configurations

* Dimensions, and etc


can be found in our PDF brochure.

The Smallest PLC in the SYSMAC Family Shows Just How Far Downsizing Can Go

The SYSMAC C Series began developing s wide range of Programmable Controllers to meet factory automation needs in 1973. And now the CPM1A joins the C series history as a small PLC that has all the far less mounting space.

The CPM1A also provides flexibility in I/O capacity ranging from 10 to 100 I/O points. The CPM1A can replace relay control, help distribute I/O, work as a miniature machine controller or sensor controller, or fill many other vital roles in factory automation.

Features

Flexible Control and Plenty of Power in the Minimum Body Size

The CPM1A can be easily built into a wide array of machines or control panels. For example, you can use the CPM1A to control a few more I/O points on existing lines without having to install a new control panel. Just install the CPM1A in available space to control only the required number of I/O. The CPM1A was born to reduce waste in the factories by effectively using valuable space.

Wide Lineup of CPM1A Series


Select Units to Control from 10 to 40 Input Output I/O points and, in combination with Expansion I/O units, can be used to control a total of from 10 to 100 points.

With Expansion I/O Units

Note: Only 30- and 40-point CPUs support Expansion I/O Units. Up to three Expansion I/O Units can be connected.

CPM1A-20EDR1/-20ESDT(1)
CPM1A-8ED/-8ER/8ET(1)


http://www.file2box.com/o3gi7mmmhq4o