Intercom schematics

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Intercommunication (Intercom)

This is a great intercom circuit that can be used in many ways. It uses 22V to operate and maybe it will work at a lower voltage (you can try it). For input/output it uses a loundspeaker (20-45 Ohm) on each side.... [read more]

High Quality Intercom

A very high quality intercom, which may also be used for room monitoring.... [read more]

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