I know of at least one that runs off a 12 Volt battery. I think it is a gel-cell but I KNOW it charges off an ordinary 12 Volt charger and it is supposed to be trickled charged nightly, so it is like a lead-acid in that it likes to be constantly charged and doesn't have "memory."
---------- >From: "Dan Kinney (A)" <dan.kin...@heapg.com> >To: Rich Nute <ri...@sdd.hp.com>, gkerv...@eu-link.com >Cc: jrbar...@lexmark.com, emc-p...@majordomo.ieee.org >Subject: RE: Define Continuous DC Voltage >Date: Tue, Nov 13, 2001, 3:56 PM > > > Does anyone know what voltage is used in electric chairs? Just Curious. > Dan Kinney > Horner APG > Indianapolis > >> -----Original Message----- >> From: Rich Nute [SMTP:ri...@sdd.hp.com] >> Sent: Tuesday, November 13, 2001 2:08 PM >> To: gkerv...@eu-link.com >> Cc: jrbar...@lexmark.com; emc-p...@majordomo.ieee.org >> Subject: Re: Define Continuous DC Voltage >> >> >> >> >> >> Hi Gregg: >> >> >> > There was also a very good (but short) article by Tektronix in the >> 70's >> > called The Lethal Current. >> > >> > It concluded that currents between 100 mA and 3 Amps were more lethal >> that >> > currents of more than 3 Amps because those high currents tended to >> 'restart' >> > the heart. >> >> Hmm. Having been the manager of product safety at Tektronix in >> the '70's, I don't recall such an article. At least not by that >> name. >> >> Electric energy causes various injuries to the body depending >> on the magnitude of the energy. Only two of the injuries can >> lead to a fatality. >> >> The two injuries are fibrillation of the heart, and overheating >> of internal organs, especially the liver. >> >> Fibrillation is caused by ac current in the range of 50 mA to >> 500 mA (external connections) where the current pathway through >> the body includes the chest (and the heart). Above 500 mA, >> fibrillation is not a likely consequence. (And, I believe I >> am correct in asserting that dc cannot cause fibrillation.) >> >> Overheating of internal organs is a function of power dissipated >> in the body, where the body impedance can be taken as 1000 ohms. >> The power required depends on the time of contact. Electric >> utility linemen are subject to such injury. Consider 1 ampere >> through 1000 ohms is 1000 watts! (The electric chair kills by >> over-heating the internal organs, not by fibrillation.) >> >> So, Gregg's statement that there is both a lower and upper limit >> for fibrillation is correct (although I do not agree with Gregg's >> values). >> >> >> Best regards, >> Rich >> >> >> >> >> >> >> ------------------------------------------- >> This message is from the IEEE EMC Society Product Safety >> Technical Committee emc-pstc discussion list. >> >> Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ >> >> To cancel your subscription, send mail to: >> majord...@ieee.org >> with the single line: >> unsubscribe emc-pstc >> >> For help, send mail to the list administrators: >> Michael Garretson: pstc_ad...@garretson.org >> Dave Heald davehe...@mediaone.net >> >> For policy questions, send mail to: >> Richard Nute: ri...@ieee.org >> Jim Bacher: j.bac...@ieee.org >> >> All emc-pstc postings are archived and searchable on the web at: >> No longer online until our new server is brought online and the old >> messages are imported into the new server. > > ------------------------------------------- > This message is from the IEEE EMC Society Product Safety > Technical Committee emc-pstc discussion list. > > Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ > > To cancel your subscription, send mail to: > majord...@ieee.org > with the single line: > unsubscribe emc-pstc > > For help, send mail to the list administrators: > Michael Garretson: pstc_ad...@garretson.org > Dave Heald davehe...@mediaone.net > > For policy questions, send mail to: > Richard Nute: ri...@ieee.org > Jim Bacher: j.bac...@ieee.org > > All emc-pstc postings are archived and searchable on the web at: > No longer online until our new server is brought online and the old > messages are imported into the new server. > ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson: pstc_ad...@garretson.org Dave Heald davehe...@mediaone.net For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: No longer online until our new server is brought online and the old messages are imported into the new server.
