Sexotic Comic. Any worthy EE has a function generator in one way or another, such as a PIC to make some square waves, to an oscillator of sorts. After a while you want to get yourself a real function generator with frequency control and voltage control, as well as the option of a saw tooth wave, sine wave, or pulse wave, with duty cycle control of course!

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Today's function generators are complex multi-hundred dollar beauties, but the function generators of years ago are easy to understand in theory and best of all, almost fully DIP! As you can see, there is a lot of unused space on the board, specifically on the bottom left. There are a few reasons for that,mainly due to there is mains (120v +) in that general location, and as a safety concern only necessary traces go there. In most of todays electronics you see what is called a 'ground power' or a 'power plane'.

Instead of having traces for ground and power, they use the empty space on the board for copper connected to ground or power. It helps immensely in power distribution and a ground plane is often necessary in high speed electronics for proper current return. Paris To Launch Electric Car Sharing Program. It's time to speak out for your right to repair We have a chance to guarantee our right to repair electronic equipment—like smartphones, computers, and even farm equipment. This is a once-in-a-generation chance to protect local repair jobs—the corner mom-and-pop repair shops that keep getting squeezed out by manufacturers. Join the cause and tell your state representative to support Right to Repair.

Tell them you believe repair should be fair, affordable, and accessible. Stand up for your right to repair!