The following circuit diagrams are tone detector circuit diagrams which also known as sound activated switch circuit. Actually, these circuitsĀ use microntroller for switching because the circuits were designed for robot start up activation. But you can build switching module using relay. You may make a trial to use this circuit for other applications such as to automatically turn on the lamp, anti theft or security applications.
Tone Detector diagram 1
Tone Detector diagram 3
Tone Detector diagram 4
Tone Detector diagram 5
Circuit source: Sound activated switch for robot
This is the circuit diagram of power amplifier 45W using power uPC 1230 as the…
The Horn Circuit This is a basic circuit of car horn and lamp flasher that…
This is the circuit diagram of drinking water alarm based a small water sensor by…
Here is the 200W MOSFET amplifier powered based on four piece of IRFP250N, they are…
This is the 300W RMS stereo power amplifier circuit project. This amplifier is based four…
This is an active stereo tone control circuit using very well known op-amp IC of…