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

Voltage Test Probe
Frequency Sine wave generator with MAX083
Ethernet board for C64 and SX-64
Photoelectric switch
Fast acting power supply protection
Ultimate Continuity Tester Hides Many Tricks Up Its Sleeve
antilock breaking system
PIC Controlled Relay Driver
The uTracer V3 a miniature Tube Curve Tracer
Feeding CB and Ham radio audio into the aux circuit
direction detector decoder
16-bit homebuilt computer project
12 Volt DC Power Supply Circuit



Top