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  1. Path: sparky!uunet!zaphod.mps.ohio-state.edu!swrinde!news.dell.com!gator!nlbbs!uupms!paula
  2. From: paula@nlbbs.UUCP (Paula Stockholm)
  3. Newsgroups: sci.electronics
  4. Subject: How to prevent feedback in a intercom ckt ???
  5. Message-ID: <726294187snx@nlbbs.UUCP>
  6. Date: Wed, 06 Jan 93 04:23:07 GMT
  7. Reply-To: paula@nlbbs.uucp
  8. Distribution: world
  9. Organization: The Electronics Workbench - Cumberland Maine
  10. Lines: 3
  11.  
  12.         Look in a telecommunications IC book for a hybrid circuit. These
  13.         are basic telephone circuits which convert 2-wire (the phone or
  14.         Intercom line) to 4-wire (the headset and the mic).
  15.