Re: CD 942 failure tonight

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

Original poster: "John Richardson" <jprich-at-up-dot-net> 


Hi DC,

My electronics math isn't the best, and I was hoping that you could help me
with how many strings of 15 I would need to achieve the desired value.  I am
assuming I use the formula I have in my old AARL hand book for caps in
series: 1/C1 + C2 + etc.?  Then add the value of each string together?

Thanks,
John

 > In your case,
 >
 > 12 kV Erms x 2.5 = 30 kV DC rating / 2 kV/cap = 15 pcs per string for use
in
 > AC circuit
 >
 > You can violate this rule, but you will experience failures from time to
 > time as you have just experienced.
 > Run at 2.5 x Erms and you will probably retire before you experience a
 > failure.  At $3 per cap it's a great bargain and give you piece of mind
you
 > won't have to troubleshoot during an important demo with your coil ---
like
 > at a local school.
 >
 > Dr. Resonance
 >
 > Resonance Research Corporation
 > E11870 Shadylane Rd.
 > Baraboo   WI   53913
 >
 >  > Capacitor bank:  4 strings of 9, total of .0667, per MMC chart.
 >  >