6 Digit Coded Ac Power Switch Circuit


Posted on Dec 28, 2012

This switch uses four CD4013 BE dual flip-flops, an inverter, and an optoisolator to drive a triac. The circuit can switch 25-A ac load current. A standard 4x3 telephone keyboard is used to enter a 6-digit code. In case of a wrong code, a signal is available to activate ah alarm.


6 Digit Coded Ac Power Switch Circuit
Click here to download the full size of the above Circuit.

The disarming method is a secret reset button that can be any number on the keyboard.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

On-off controller
Sound-level-meter
Bird Feeder Monitor Circuit
Pulse Generator With Variable Duty Cycle Circuit
Arduino Motor Knob
4 x 25 W Car Amplifier TDA7381 Circuit
Metal detector circuit
Light Bulb Pirani Gage Project
ve170 monitor repair with led
Infrared-Led based Wireless Data & Voice Communication withCircuit
Optical attenuation control circuit
Unidirectional thyristor dimmer lights triggered ordinary transistor circuit
High Voltage Power Supply for Valve Preamplifiers



Top