Communication

Cut Phone Line DetectorCut Phone Line Detector

Cut Phone Line Detector

This cut phone line detector circuit is used to detect whether your phone line is active or not. Components List:…

55 years ago
Two Station Intercom based on LM386Two Station Intercom based on LM386

Two Station Intercom based on LM386

This a two station intercom. It uses two wires to run between each intercom unit. Each is self contained with…

55 years ago
Ultrasonic Sensor SwitchUltrasonic Sensor Switch

Ultrasonic Sensor Switch

Here is the circuit diagram of ultrasonic sensor switch. There are many methods of wireless switching such as by using…

55 years ago