Simple Intercom

 



Schematic of circuit

This intercom uses a single audio IC as a two-way amplifier, and the speakers as microphones. A single 6-V supply provides adequate audio volume.

Component Value Qty

Resistor

180

01

Resistor

2.7

01

Resistor

51

01

Capacitor

0.1uF

01

Capacitor

4uF

01

Capacitor

100uF

01

Capacitor

25uF

01

Capacitor

0.05uF

01

IC

LM390

01

Reference : " Zeus Electronics "

Download the page | Audio / Music | Circuits | Electronics | Home

Last Updated : February 15, 2002

1