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Circuit Archives
Home Automation Circuits/ Intercom
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Intercom II
Reprinted with permission
from Rudolf Graf.
For this and over 1000 other electronic circuits, review and order Rudolf
Graf's Encyclopedia of Electronic Circuits on CD-ROM Vol-1
McGraw-Hill ISBN0078528119
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Description:
This intercom uses a
single audio IC as a two-way amplifier, and the speakers as microphones. A single 6-V
supply provides adequate audio volume. (Hands-On Electronics, 1/89, p. 39.and figure FC48-3
from Encyclopedia of Electronic Circuits Vol. 1.)
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