Re: Ridiculous Impedance

Article View: sci.electronics

Article #5760

#5760

From: Mark G. Johnson
Date: Thu, 23 Aug 1990 02:30

12 lines
803 bytes

>>Why does TAT-7 (Trans-Atlantic Telephone cable number 7) have
>>a characteristic impedance of 61.8 ohms?
>

Because its geometry (R2/R1) and its dielectric material (Er)
[along with God and James Clerk Maxwell] dictate it.

mj
-- 
 -- Mark Johnson	
 	MIPS Computer Systems, 930 E. Arques M/S 2-02, Sunnyvale, CA 94086
	(408) 524-8308    mark@mips.com  {or ...!decwrl!mips!mark}

Technical Details

Message-ID: <41043@mips.mips.COM>

Path:

arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!mailrus!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!mips!hal!mark

References: <1770009@otter.hpl.hp.com> <1990Aug22.175909.3884@murdoch.acc.Virginia.EDU>

Show Full Headers

Complete Article Headers

Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!mailrus!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!mips!hal!mark
From: mark@mips.COM (Mark G. Johnson)
Newsgroups: sci.electronics
Subject: Re: Ridiculous Impedance
Message-ID: <41043@mips.mips.COM>
Date: 23 Aug 90 02:30:26 GMT
References: <1770009@otter.hpl.hp.com> <1990Aug22.175909.3884@murdoch.acc.Virginia.EDU>
Sender: news@mips.COM
Lines: 12

Reply to Parent Message