Re: Maximum input voltage for cockraft walton voltage multipliers.

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

Original poster: "Dr. Resonance" <resonance-at-jvlnet-dot-com> 



The corona level usually increases dramatically around 26 kV --- beyond 24
kV you need some corona control, ie, small spheres, balls, etc.

Dr. Resonance



 > Original poster: "Hydrogen18" <hydrogen18-at-hydrogen18-dot-com>
 >
 > Well, I hooked it up to 2 Mots in series, for about 4800 VAC. Current was
 > intense, I figured 20 kv at 8 ma for 160 watts. At first I though I had
 > killed my diodes after about 30 seconds of running because it stopped
 > jumping the gap, but the arcs had been blastign away at the
 > electrodes(evident in the red sparks flying off) and causing corona
 > production to get worse and worse and thus stopping it from reaching a
high
 > voltage any longer. Corona is quite powerful, if I place my hand near the
 > high voltage it feels like a 5 mph wind is hitting me. I am limiting
current
 > on the output through a 100K 1% resistor that seems to have acquired a
 > resistance higher than 2000M(note: throwaway Beckman multimeter). Found
some
 > small neon transformers for charging it, should I go with the 4000 VAC or
 > 5000 VAC one?
 >
 > http://www.hydrogen18-dot-com/projectlogs/hivolt/CW_voltmult1/
 >
 > ---Eric
 > ----- Original Message -----
 > From: "Tesla list" <tesla-at-pupman-dot-com>
 > To: <tesla-at-pupman-dot-com>
 > Sent: Saturday, March 06, 2004 7:51 PM
 > Subject: Re: Maximum input voltage for cockraft walton voltage
multipliers.
 >
 >
 >  > Original poster: "Dr. Resonance" <resonance-at-jvlnet-dot-com>
 >  >
 >  >
 >  > It depends on your component ratings in each stage.
 >  >
 >  > The diodes must have a minimum rating of Erms x 2.8.   All caps should
 > have
 >  > a minimum rating of Erms x 1.414.  Practical applications usually use
 > diodes
 >  > rated at Erms x 3.6 and caps rated at Erms x 2.2.
 >  >
 >  > Unless you increase you component values you can not keep increasing
the
 >  > input potential or the components will start failing.
 >  >
 >  > Be careful with the high potential direct current as it can be lethal
when
 >  > stored in a cap.
 >  >
 >  > Dr. Resonance
 >  >
 >  >
 >  >
 >
 >
 >