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Article #7173Re: Ridiculous Impedance
From: Don Lewis
Date: Wed, 12 Sep 1990 03:59
Date: Wed, 12 Sep 1990 03:59
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In article <4008@kitty.UUCP> larry@kitty.UUCP (Larry Lippman) writes: > Despite the existance and use of transistors during the 1950's, >the TAT-1 undersea repeaters all used vacuum tubes. If memory serves me >correctly, these vacuum tubes had flexible stranded wire leads which were >soldered directly into the circuit - with no connectors being used. How did they produce a vacuum tight seal with stranded leads, or were the leads connected to some sort of solid wire feedthrough? -- Don "Truck" Lewis Harris Semiconductor Internet: del@mlb.semi.harris.com PO Box 883 MS 62A-028 Phone: (407) 729-5205 Melbourne, FL 32901
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!watserv1!watmath!att!occrsh!uokmax!apple!usc!wuarchive!zaphod.mps.ohio-state.edu!uakari.primate.wisc.edu!uflorida!mlb.semi.harris.com!thrush.mlb.semi.harris.com!del From: del@thrush.mlb.semi.harris.com (Don Lewis) Newsgroups: sci.electronics Subject: Re: Ridiculous Impedance Message-ID: <1990Sep12.035908.6083@mlb.semi.harris.com> Date: 12 Sep 90 03:59:08 GMT References: <1770009@otter.hpl.hp.com> <1770013@otter.hpl.hp.com> <4008@kitty.UUCP> Sender: news@mlb.semi.harris.com Organization: Harris Semiconductor, Melbourne FL Lines: 12