Re: wireless electricity

Article View: sci.electronics

Article #21323

#21323

From: Greg Wageman
Date: Wed, 03 May 1989 22:33

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In article <5040@tekgvs.LABS.TEK.COM> jackg@tekirl.LABS.TEK.COM (Jack Gjovaag) writes:
>In article <17794@cup.portal.com> ISW@cup.portal.com (Isaac S Wingfield) writes:
>>Greg Wageman writes:
>>
>>Hmm, I guess you must be too young to remember crystal radios?  These
>>were radios that used a diode (originally, a germanium crystal and a
>>                                             ^^^^^^^^^
>>Nope. Iron pyrites (fool's gold).
>>      ^^^^^^^^^^^^
>
>Nope again.  Galena (a lead/sulpher compund)

Yes, galena is correct.  Later "experimenter's" kits replaced the
crystal and catwhisker with a glass-encased germanium diode, but I was
talking about the original.  It's been a while since I used my crystal
set.  I'm into high-tech now.  You know, triodes and superheterodyne.
:-)


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References: <gYJRpyy00WB-E57Uwj@andrew.cmu.edu> <913@snjsn1.SJ.ATE.SLB.COM> <17794@cup.portal.com> <5040@tekgvs.LABS.TEK.COM>

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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!rutgers!apple!oliveb!pyramid!lll-winken!uunet!snjsn1!bilbo!greg
From: greg@bilbo (Greg Wageman)
Newsgroups: sci.electronics
Subject: Re: wireless electricity
Message-ID: <934@snjsn1.SJ.ATE.SLB.COM>
Date: 3 May 89 22:33:38 GMT
References: <gYJRpyy00WB-E57Uwj@andrew.cmu.edu> <913@snjsn1.SJ.ATE.SLB.COM> <17794@cup.portal.com> <5040@tekgvs.LABS.TEK.COM>
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