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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>
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Organization: Harris Semiconductor, Melbourne FL
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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