Article View: sci.electronics
Article #9835Re: HELP!
From: Joe Keane
Date: Tue, 29 Jan 1991 21:55
Date: Tue, 29 Jan 1991 21:55
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In article <91026.212601LEBOLDUG@QUCDN.QueensU.CA> LEBOLDUG@QUCDN.QueensU.CA (geoff l.) writes: >Not quite. Amperage is the killer, but as little as 50Vdc @ 50mA >can kill. AC is roughly the same. The value I have is 23 Vrms @ 50mA. >I'm told that AC shock survival is lower because 60 Hz interferes with >the natural beating of the heart ( roughly 60 Hz ). In article <4400003@hpsgwp.sgp.hp.com> plim@hpsgwp.sgp.hp.com (Peter Lim) writes: >Wait a minute, I thought the human heart beat at around 60 per minute. >nor per second. ;-). That would be roughly 1 Hz. That's true, but 60 Hz is roughly the worst frequency for interfering with the nervous system. You're actually a bit better off with DC, and something like 400 Hz is considerably less likely to get you killed.
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!decwrl!asylum!osc!jgk From: jgk@osc.COM (Joe Keane) Newsgroups: sci.electronics Subject: Re: HELP! Summary: 60 Hertz is dangerous. Message-ID: <4301@osc.COM> Date: 29 Jan 91 21:55:53 GMT References: <1991Jan19.052458.7449@wam.umd.edu> <4400003@hpsgwp.sgp.hp.com> Reply-To: jgk@osc.COM (Joe Keane) Organization: Versant Object Technology, Menlo Park, CA Lines: 15