Re: Series capacitance and how it affects a tank capacitor.

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

Original poster: "Hydrogen18" <hydrogen18-at-hydrogen18-dot-com> 

I meant series resistance to charging and discharging. As far as I know this
does not cause heat production.

----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Monday, February 23, 2004 1:10 PM
Subject: Re: Series capacitance and how it affects a tank capacitor.


 > Original poster: Terry Fritz <teslalist-at-twfpowerelectronics-dot-com>
 >
 > Hi,
 >
 > At 09:09 AM 2/23/2004, you wrote:
 > >I've been doing alot of research on the capacitors used in a primary
tesla
 > >circuit, and even built a  rolled capacitor and a saltwater bottle
 > >capacitor. Although I cant see myself dishing out big bucks for an MMC
for
 > >my first tesla coil, I was doing some reading about homemade capacitors
 > >and corona. It never occured to me but when placed in series each
 > >capacitor sees a reduced voltage across its dielectric. If I took 4
 > >capacitors and placed them in series with a 10 kilavolt 60 hz AC charging
 > >current would each one only see 2.5 kilavolts, thus eliminating corona
 > >almost altogether.
 >
 > Yes!  There may be a little corrona at the ends to air just do to the high
 > voltage, but adding many caps in series does get ride of that blue plate
glow.
 >
 > >The only problem I can see with this is the series resistance of
 > >capacitors. How does this affect MMCs, and how would it affect several
 > >homemade capacitors in series?
 > >
 >
 > Series resistance will not normally affect the coil's operation.  But it
 > can seriously heat up the caps causing failure.  Big high-current
 > polypropylene caps are usually fine.  If the caps get hot, they will
 > fail.  Peak current of say a thousand amps will destroy full metal film
 > caps too.  So we suggest "foil" type caps that have heavy foil in them for
 > electrodes instead of the super thin metal film.
 >
 > Cheers,
 >
 >          Terry
 >
 >
 >


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