Two Color LED AC/DC Circuit

This experiment uses a small bicolor LED light on the end of a cord anda base module that can supply both AC and DC power to the LED. Since LED diodes only pass current in one direction and this device contains two LED's within one case, when you apply DC power in one direction it glows constantly green but when DC power is applied in the opposite direction it glows constantly red. If AC power is applied then the LED alternates between glowing red and green based on the oscillating frequency of the AC current. Since AC power runs at 60 Hz and this is typically too fast for the eye to detect, we swing the LED cord around in a circle in a darkened room and the flashing LED becomes EASILY visible to the naked eye as it creates a multicolored ring of light.

Pira DCS #

Wood Board   Electrical Wire   Batteries
2 LEDs   Wire