5 tone detector circuit diagram

The following circuit diagram is a tone detector circuit diagram, also known as a sound activated switch circuit. Actually, these circuits? Use a microcontroller for switching because these circuits are designed for robot start activation. But you can build a switch module using relays. You can try to use this circuit for other applications such as automatically turning on lights, anti-theft or security applications.

Tone Detector Figure 1

Tone detector Figure 2

Tone detector Figure 3

Tone Detector Figure 4

Tone Detector Figure 5