RE: A few questions and thanks

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

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
> 
>