Article View: sci.electronics
Article #607Re: Touching a "hot" connector
From: David Chapman
Date: Tue, 20 Jun 1989 00:27
Date: Tue, 20 Jun 1989 00:27
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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
{known world}!decwrl!vlsisj!fndry!davidc
vlsisj!fndry!davidc@decwrl.dec.com
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!cs.utexas.edu!sun-barr!decwrl!pyramid!nsc!versatc!leadsv!practic!vlsisj!davidc 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 Lines: 25