Sound operated two-way switch


Posted on Aug 11, 2012

This circuit operates a relay each time a sound of sufficient intensity is made, thus one clap of the hands will switch it one way, a second clap will revert the circuit to the original condition. Q2 and Q3 form a Schmitt trigger. The JK flip-flop isoised as a bistable whose output changes state every time a pulse is applied to the clock input (pin 12)


Sound operated two-way switch
Click here to download the full size of the above Circuit.

Q4 allows the output to drive a relay.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Frequency Counter
LCD power supply circuit
Super Fool power amplifier module
One group of integrated circuits using electrical circuit 555 when the load limit
A water tank automatic control circuit



Top