Audio Circuit–Intercom Link Directories

Here are the link directories of best intercom audio circuit project available around the net.

1. 4-Way Intercom Schematic - The Link telephone intercom is designed around two ICs.

2. Simple intercom schematic - The 8 ohm speakers is used as microphone and listening speaker.

3. Homemade Intercom Schematic - Circuit suggestions for the Stereo Intercom.

4. Full-duplex Intercom - This design allows to operate two intercom stations leaving the operator free of using his/her hands in some other occupation, thus avoiding the usual "push-to-talk" operation mode.

5. Use old phones as an intercom - This circuit will show how to use old phone as intercom.

6. I.F.B Intercom circuit - Very useful type of intercom circuit.

7. Intercom preamp - A very convenient way of making an intercom is to use a loudspeaker as a microphone.

8. Op-amp as an audio amplifier for a simple intercom - A small 8 ohm speaker is used as a microphone which is coupled to the op-amp input through a 0.1uF capacitor

9. Low-cost Transistorised Intercom - The circuit comprises a 3-stage resistor-capacitor coupled amplifier.

10. Practical Intercom - This Intercom is powered by two 9volt batteries and uses only current when the Intercom is used.

If you have a new and good intercom project, website or link you'd like to suggest to us, please send your suggestion to email to us at or directly leave your material in the comment area.


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