Re: drsstc

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: DRIEBEN-at-midsouth.rr-dot-com 

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
 >
 >
 >