Automatic name-call telephone circuit

Published:2011/5/4 19:00:00 Author:Christina | Keyword: Automatic, name-call telephone | From:SeekIC

By this circuit, you can make the telephone call names automaticly, this means when the phone rings, this circuit will answer the phone automaticly, and ask who are you ? , if the opposite side people say: I'm looking for × × × × , the telephone will amplify the answer signal and send out the signal by speaker. This circuit is simple and reliable, and does not increase the load of communication network, you just need to change a line of the speaker. IC3 uses the 3 seconds language integrated circuit or the language processor. When you installing this circuit, you should keep the questioning speaker aim at or close to the machine microphone.



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