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- Newsgroups: sci.electronics
- Path: sparky!uunet!spool.mu.edu!uwm.edu!ux1.cso.uiuc.edu!news.iastate.edu!class1.iastate.edu!sehari
- From: sehari@iastate.edu (Babak Sehari)
- Subject: Re: Transmission line question
- Message-ID: <sehari.724504235@class1.iastate.edu>
- Originator: sehari@class1.iastate.edu
- Sender: news@news.iastate.edu (USENET News System)
- Organization: Iowa State University of Science and Technology, Ames, Iowa.
- References: <1992Dec15.202004.15878@ucsu.Colorado.EDU>
- Date: Wed, 16 Dec 1992 11:10:35 GMT
- Lines: 19
-
- In <1992Dec15.202004.15878@ucsu.Colorado.EDU> barr@tramp.Colorado.EDU (BARR DOUG) writes:
-
- >Some specs I have call for ethernet coax to be grounded in one location
- >and one location only! I am wondering why this is. Antenna effects,
- >current loops or something else. Does anyone know why this is the case?
-
- If he distance is large enough, and the two end points are at two different
- potentials, you might blow up the whole computer. Remember, the two end
- points are not connected with %100 conductive material. The two end point
- might be connected by earth or other much less conductive materials. When
- you connect them with a conductor, such as the shield, this conductor
- wants to create zero potential between these two ends. This requires very
- large current passes through the wire, which might damage the computer.
- Also, there might be some voltage from change of magnetic flux of the big
- loop.
-
- With highest regards,
- Babak Sehari.
- --
-