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- From: tidedu@ariel.lerc.nasa.gov (William T. Dedula)
- Subject: How to prevent feedback in a intercom ckt ???
- Message-ID: <4JAN199311031444@ariel.lerc.nasa.gov>
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- Sender: news@eagle.lerc.nasa.gov
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- Organization: NASA Lewis Research Center
- Distribution: usa
- Date: 4 Jan 1993 11:03 EST
- Lines: 27
-
- Hello All;
- I'm designing a multi-station, multi-channel intercom
- system which will utilize a headset-microphone combination
- at each station. Since one of my requirements is to allow
- BOTh the Headset, and the Microphone to be enabled at each
- station, I am told that I could have a problem with feedback.
- I intend to use Low-Cost Power Amplifier IC's as well as
- 741 Op Amps. I'd like to get some ideas from the net of ways
- that this feedback problem can be greatly minimized, or
- eliminated. Is there any special way the circuit can be
- designed, or is there any special type of headset or microphone
- which could be used, etc ...
-
- Thank You very much !!!
-
- Tim
-
- W. Tim Dedula Internet:
- N.A.S.A. Lewis Research Center tdedula@nasamail.nasa.gov
- Mail Stop 77-3 tidedu@mars.lerc.nasa.gov
- 21000 BrookPark Road aa252@cleveland.freenet.edu
- Cleveland, Ohio 44135
- Phone (216) 433-3668
-
- The National Aeronautics and Space Administration: Science and
- Technology ... for the Benefit of ALL Mankind !!!
-
-