Re: A few questions and thanks

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

Original poster: "Crow Leader by way of Terry Fritz <twftesla-at-qwest-dot-net>" <presence-at-churchofinformationwarfare-dot-org>

Ths "simple" way to calculate energy in a high voltage cap is square the
voltage in kV, multiply this by the capacitance in uF and divide by two.

for instance:

a cap of 0.05 uF charged to 20kV would give us (20*20) or 400 times 0.05
which is 20. Divide this 20 by two and you get 10J. You can do this in your
head without 4 millions decimal places.

----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Friday, July 13, 2001 9:18 AM
Subject: RE: A few questions and thanks


> Original poster: "Loudner, Godfrey by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <gloudner-at-SINTE.EDU>
>
> The classic formula is E = 0.5CV^2. The calculation for one of your
Maxwell
> caps is E = 0.5 x 0.00000002F x 45000volt x 45000volt = 20.25Joule. This
is
> the maximum rated energy storage capacity of one of your caps. You must
> apply 45,000 volts to get to this energy level. Charging four of your caps
> in parallel at 45,000 volts will give an energy storage of 4 x 20.25Joule
=
> 81Joule. If you use a voltage level V less than 45,000 volts, then use the
> formula E = 0.00000001V^2 for the energy in joules stored in a single cap.
>
> Godfrey Loudner
>
> > -----Original Message-----
> > From: Tesla list [SMTP:tesla-at-pupman-dot-com]
> > Sent: Thursday, July 12, 2001 9:51 PM
> > To: tesla-at-pupman-dot-com
> > Subject: A few questions and thanks
> >
> > Original poster: "Chris Brick by way of Terry Fritz
<twftesla-at-qwest-dot-net>"
> > <cbrick-at-rebelbase-dot-com>
> >
> > First, the thanks...  To Jim Heagy for hosting a great
> > event.  Unfortunately I could only make it for Saturday evening but it
was
> >
> > well worth it.  To Kennan for having one of the coolest coils I have
ever
> > seen, amazing discharges for such small input power.  Oh, and a thanks
to
> > Greg and Kelek for lighting the fire under my butt to get the big coil
> > project back on the bench.  I met a lot of great folks there but didn't
> > get
> > enough names...let's do it again real soon.
> >
> > Questions:
> >
> > I haven't been able to get the equation working to figure out joules per
> > cap.  I have 4 Maxwell .02uF 45KV pulse caps that I will be running in
> > parallel.  I have always been terrible with math but can run a
nationwide
> > network in my sleep, go figure.
> >
> > Maxwell caps have a fill screw on one end which is also the end that is
> > marked for high voltage.
> > Are there any problems running them on their sides?
> > If there is air space in the cap, should it be filled or have others
found
> >
> > this to be ok?
> >
> > I am going to need to discharge the caps remotely after shutdown.  I
have
> > read where others have used a pole with a wire and resistor to softly
> > (hmmmm....) bring the voltage down instead of one big crack.  Any advice
> > on
> > resistor values and design consideration would be very welcome.
> >
> > I will be powering my coil with one (or more) of
> > these:  http://www.teslacoils-dot-org/rcs1000/index.html
> >
> > I'll try to take pictures of the whole process and document the design
> > decisions on www.teslacoils-dot-org.
> >
> > Thanks,
> >
> > Chris
> >
> >
>
>
>
>