[HomeBrew] touch switch for keyer

[Larry Williams]

quick search found this. It's a 555 timer used for a code practice osc. Uses a touch switch to turn it on and off.

http://www.flashwebhost.com/circuit/touchcpo.php

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From: homebrew-request at mailman.qth.net
Date: 2005/01/05 Wed AM 04:00:50 EST
To: homebrew at mailman.qth.net
Subject: HomeBrew Digest, Vol 12, Issue 1

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Today's Topics:

   1. Cicuits needed (Durwydd MacTara)


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Message: 1
Date: Tue, 04 Jan 2005 21:01:20 +0000
From: "Durwydd MacTara" <durwydd at hotmail.com>
Subject: [HomeBrew] Cicuits needed
To: Homebrew at mailman.qth.net
Message-ID: <BAY19-F17F449C70EDFF2C761CCBBA2910 at phx.gbl>
Content-Type: text/plain; format=flowed

I need to find a circuit for a "touch capactance switch" to use as the basis 
for an iambic keyer with no moving parts.  TIA for any help!



  "Carpe` Diem!"
             Durwydd MacTara




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