Intercommunication Intercom


Posted on Feb 6, 2014

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.


Intercommunication Intercom
Click here to download the full size of the above Circuit.




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