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Article #607

Re: Touching a "hot" connector

#607
From: David Chapman
Date: Tue, 20 Jun 1989 00:27
25 lines
1784 bytes
In article <1496@cs-spool.calgary.UUCP> hermann@cs-sun-fsd.UUCP (Michael Hermann) writes:
>In article <89Jun8.160452edt.10877@ephemeral.ai.toronto.edu> dudek@ai.toronto.edu (Gregory Dudek) writes:
>>
>>    I noticed long ago that if you (accidentally) touch a live
>>conductor, there is an odd sensation reminicent of a rough surface.
>> (the feeling is kind
>>of line a high-freq. vibration -- 60Hz?).
>
>	I'm assuming that besides doing this by accident, you were very well
>insulated and so your body did not provide a ground fault to the conductor
>(ie. no current went a significant distance through you).

My understanding of the whole business is that you are feeling the current
which is (dis)charging your body capacitance.  Pump a few electrons in and
you get a current.  You don't need a current "through" your body.  There's a 
lot of mass there in which to store excess electrons.  A corollary to this is
that you don't need to be grounded to get zapped by a _very_ high voltage
(>100 kV?).

Corrections welcome; flames (sparks?) to /dev/null.
-- 
		David Chapman

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From: davidc@vlsisj.VLSI.COM (David Chapman)
Newsgroups: sci.electronics
Subject: Re: Touching a "hot" connector
Summary: body capacitance
Keywords: touch, sensation, live, shock
Message-ID: <15247@vlsisj.VLSI.COM>
Date: 20 Jun 89 00:27:14 GMT
References: <89Jun8.160452edt.10877@ephemeral.ai.toronto.edu> <1496@cs-spool.calgary.UUCP>
Reply-To: davidc@vlsisj.UUCP (David Chapman)
Organization: VLSI Technology Inc., San Jose, CA
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