Chapter 18
Transistor Tester
In This Chapter
Understanding how a transistor works
Finding out about NPN and PNP transistors
Discovering how to control I2C devices from RISC OS
Building a fully functional, small-signal transistor tester
Writing software to control and analyze the measurement made on the transistor
Getting a desktop application version of the software
This project is perhaps one of the most useful things we’ve ever made (if we do say so ourselves). Not only does it test to see if a transistor is working, but it tells you its gain and even what the pin out is. This is great not only for trawling through transistors recovered from recycled boards, but also for saving you the time of looking through data sheets and trying to identify the specific packaging version of any transistor that you have. This is a valuable working tool that we come back to again and again during ...
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