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Re: HV power supply

Original poster: "Ben McMillen by way of Terry Fritz <twftesla-at-qwest-dot-net>" <spoonman534-at-yahoo-dot-com>

I may be wrong, but isn't overvolting any type of capicitor
a BAD thing?

Coiling In Pittsburgh
Ben McMillen

--- Tesla list <tesla-at-pupman-dot-com> wrote:
> Original poster: "by way of Terry Fritz
> <twftesla-at-qwest-dot-net>" <Tesla729-at-cs-dot-com>
> Hey all, 
> I'm sort of looking for a decent metered, filtered HV
> power supply
> without spending a  fortune. I am looking for something
> that 
> can put out at least say 20 kVDC at at least 10 mA. I've
> been 
> looking on ebay some for this but it seems hard to find
> exactly
> what i'm looking for for under $300, especially when you
> start 
> figuring shipping. I'm needing something like this to
> charge my
> (2) 100 uFD, 10 kV energy discharge caps for my quarter
> shrinker
> safely within a reasonable time frame ( < 2 minutes for a
> 10 kJ
> charge is what I'm aiming for). I'm no engineer, but I
> know that you
> can charge a cap a lot faster if the supply voltage is
> considerably 
> higher than the voltage that you are trying to charge the
> cap to,
> so long as you quit charging when the cap reaches its
> rated voltage.
> My current charger uses (2) 15/30 NSTs full wave
> rectified thru (2)
> diode sticks from an x-ray tranny to the center tap
> ground of the 
> NSTs. Even when fed by a variac with 140 volts, these
> output DC 
> voltage with the load of charging these caps dosen't get
> much above
> 10 kV, so I can charge the caps to say 80% of their rated
> voltage 
> within a couple of minutes but it takes almost forever to
> fully charge
> them to 10 kV :-(
> Anyway, a nice little HV power supply like Terry has
> would be nice :-)
> Anybody got an extra HV supply that they would like to
> sell to a good
> home for a reasonable cost? Or can someone point me in
> the right
> direction for obtaining one?
> Spark Safely,
> David Rieben