Parallel Troll Circuit

gistfile1.txt

http://www.youtube.com/watch?feature=player_embedded&v=OoPCDiMF108

1. In the battery or inside the battery plug, the current is converted to AC.
2. The LEDs are attached in opposite polarity, but are normal LEDs.
3. The switches are labelled in reverse - '0' is short, '1' is open.
4. Each switch has an internal diode in series, with the same polarity as their LED.

When both switches are '0':
 Each switch conducts when the AC cycle forward-biases its diode, so the LED sees insufficient voltage (only 0.7V to light)

When one switch is '1':
 That switch no longer conducts on that half of the cycle, so that LED lights at 50% duty cycle.

When both switches are '1':
 Neither switch conducts, so both LEDs light at 50% duty cycle. (opposite phase)

-MrTrick