Schematic Telephone Intercom Circuit Diagram. Intercom system diagrams. Telephone intercom wiring diagram show the circuit flow with its impression rather than a genuine representation.
Cf1 1 cf2 off. Inter communicating systems fitted with loud speakers are installed for quick and easy communication between repair stations and between main and auxiliary control. Intercom circuit with ringer.
Cf1 2 cf2 on inactive state on hook.
The main concept behind the circuit is the use of lm386 audio amplifier which receives the audio signal from microphone amplifies it and plays it on the speaker. Active state off hook. Our basic help sheets. In this intercom schematic the 8 ohm speakers is used as microphone and listening speaker.
