Posted on Oct 18, 2012

Only one LED can be on when the circuit is at rest. Which LED is illuminated is determined by the touch pick-up that last had human contact. Pickup terminal A controls the on condition of LEDl, and terminal B controls the on condition of LED2.

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

A 4001 quad two-input NOR gate is connected in an anti-bounce latching circuit that is activated by touching a pickup.

Leave Comment

characters left:

New Circuits



Popular Circuits

How should I wire up the circuit to connect a TSOP4838 (Radio Shack 276-64) infrared receiver to an Arduino
strobe light controller
Air flow detector circuit
ADUC836 1MIPS 8052 MCU + 62kB Flash + Dual 16-Bit ADC + 12-Bit DAC
I have a 1990 Toyota Camry LE station wagon & trying to install
Potentiometric voltmeter
Arduino CAN Bus Interface
The Z-bridge
DIY ECG Machine On The Cheap
Single-phase motor automatic intermittent operation control circuit