Power with one wire

Thread Starter

arthur92710

Joined Jun 25, 2007
307
Ok I have a circuit on a breadboard with 1 wire connecting to it (should be +12dcv) it has a zener diode a resistor and a led. when I touch the led and zener the led lights up. How does that happen? Im uploading a video so that you can see.

look here
 
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