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Re: drsstc



Original poster: "Dr. Resonance" <resonance-at-jvlnet-dot-com> 



A value of 10 Joules or more across the chest may be lethal.  Most stun guns
are 1-3 Joules and the police models are 5 Joules.

In AC circuits a value of 25 mA is considered the legal threshold for
lethal.

Dr. Resonance

 >
 > Hi Bob,
 >
 > The defibs that I've seen in my profession (firefighter)
 > generally have two energy level shock settings - 200 joules
 > and 360 joules, so I would assume that they are not charged
 > up to their maximum rated voltage for "shocking". Seems
 > strange that an electric charge that would almost certainly
 > be lethal to a normally healthy, conscious person can "shock"
 > a fibrillating heart back into the "normal" electrical ry-
 > thym, thus possibly saving a life. Dosen't it only take a
 > couple of joules to be mortally dangerous?
 >
 > David Rieben
 >
 > ----- Original Message -----
 > From: Tesla list <tesla-at-pupman-dot-com>
 > Date: Saturday, October 23, 2004 6:38 pm
 > Subject: Re: drsstc
 >
 >  > Original poster: "Bob (R.A.) Jones" <a1accounting-at-bellsouth-dot-net>
 >  >
 >  >
 >  > Subject: Re: drsstc
 >  >
 >  >
 >  > > Original poster: "David Rieben" <drieben-at-midsouth.rr-dot-com>
 >  > >
 >  > > Bob(s):^),
 >  > >
 >  > > The latest capacitor technology has caps of much smaller
 >  > > volume/energy ratios than either of the caps that you mention.
 >  > > Difribrillators have a capacitor of appr. 5.2 kV at around
 >  > > 35 to 40 uFD rating and they are not much larger than say two
 >  > > combined microwave oven filter caps. I suppose their
 >  > > peak current rating dosen't have to be that great since
 >  > > they're designed to discharge across a relatively high
 >  > > resistance - human chest :^O Even with the conductive gel
 >  > > that they apply to the skin before shocking, the resistance
 >  > > would still probably be in the dozens, if not hundreds of
 >  > > Ohms.
 >  > >
 >  >
 >  > Hi David,
 >  >
 >  > Thats very very impressive 540J in the volume of 2 MO caps WOW. That's
 >  > comparable to an electrolytic cap for energy density.
 >  > It would require more than 1500 Panasonic 0.15uF/2kV to do that.
 >  > But as its has been said before its one thing for a cap to have to
 >  > chargefor a few seconds a few times a day.
 >  > and its a completely different duty to operate continuously.
 >  >
 >  > Seriously off topic (sorry Terry) but what the h$## are they
 >  > trying to do to
 >  > the patient 540J into his chest!!
 >  > Does it double as an elephant defibrillator too !!
 >  >
 >  > Bob
 >  >
 >  >
 >  >
 >
 >
 >