LED Tester


Posted on Feb 4, 2014

You have to admit that these tiny electronic lamps are handy, and they last almost forever. Around 40 years after Nick Holanyak developed the first LED, they have become just about indispensable. Any self-respecting electronics hobbyist always has a few in his junk box. But before you use LEDs, it?s a good idea to check them out. With a LED tester, you can even do it in the dark!.


LED Tester
Click here to download the full size of the above Circuit.




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