Where i cant find the circuit of a multiple station intercomm?
Answer:
I found discovercircuits.com to be a pretty good resource for different kinds of electronics projects. It's a large collection of circuit design web pages on the 'net. Check the link below for a list of intercom projects.
Also, there are several volumes of a book called The Encyclopedia of Electronic Circuits. I was able to find a few of the volumes at my local library. If you want to buy the books, you can go to several online bookstores (Amazon, Barnes & Noble, etc.). If you can preview them at a library first, I would recommend that approach.
Good luck.
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