RE: Optimum capacitor size

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

Original poster: "Lau, Gary by way of Terry Fritz <teslalist-at-qwest-dot-net>" <Gary.Lau-at-hp-dot-com>

The resonant cap size for a 12/240 60 Hz NST would be .053uF.  I've found 
that twice the mains-resonant value works best with a static gap, and an 
LTR sizing is safer for the NST too.  I would put the recommended range 
between .05 and .10uF, preferably on the high end to minimize overvoltage 
problems.

That said, are you sure you have enough mains juice for such a hefty NST 
farm?  Using LTR caps will draw considerably more power from an NST than 
the faceplate rating suggests.  My single 15/60 NST pulls over 20 Amps from 
the wall.

Gary Lau
MA, USA

 > Hi,
  >
  > Thanks for your follow up questions.  The answers are:
  >
  > -Asynchronous gap
  > -60 Hz
  > -Four 12 kv/60 mA NST's
  > -Can run various break rates as I am using a variac with my
  > motor.  I need to
  > update my maximum rpm, but I believe I can run up to maybe
  > 400 breaks per
  > second.
  >
  > Look forward to hearing from you.
  >
  > Regards,
  > Martin Fryml
  >
  >