- Joined Mar 24, 2008
It comes up now and then that I need to find LED in a display, or something similar. The problem is, LEDs are delicate if you back voltage them, they can blow much above 4-5V! Here is a simple scheme I came up with for a quick and dirty breadboard tester. The first circuit is what you might use in a box, the second is the bread board with the calculated voltages.
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