RE: MMC question

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

Original poster: "Luke" <Bluu-at-cox-dot-net> 

Point taken was afraid I would have to bump up.
But I agree and thought that at first just wanted to hear it from
someone else as well.

thanx

Luke Galyan
Bluu-at-cox-dot-net

-----Original Message-----
From: Tesla list [mailto:tesla-at-pupman-dot-com]
Sent: Friday, January 16, 2004 9:46 PM
To: tesla-at-pupman-dot-com
Subject: Re: MMC question

Original poster: "Gerry Reynolds" <gerryreynolds-at-earthlink-dot-net>


Hi Luke,

The 942C series of caps are great.  However, with a 15KV NST (this is
RMS
voltage), the peak voltage will be just over 21000 volts not counting
other
effects such as resonant rise and inductive kick.  A 10 cap string, IMO,
will be insufficient for this transformer.  I would say a minimum of 12
and
propose a 14 cap string instead.  LTR for SRSG will certainly keep
resonant
rise down and the SRSG will take advantage of inductive kick.  Also, for
a
given operating voltage, going to a larger string will reduce the peak
and
RMS currents in that particular string with everything else the same
(BPS
and Lp).

Gerry R


  > Original poster: "Luke" <Bluu-at-cox-dot-net>
  >
  > I have decided on the capacitors that the geek group recommend.
  > The ones I have on order are the 0.15 micro farad and rated at 2KV.
  > If I run these with sets of 10 in series they would have a voltage
rating
  > of 20KV
  > I will be using a 15KV NST.
  > The cap size will be LTR and I am going to use a SRSG
  > Does it seem like I am cutting the voltage rating a bit close or will
these
  > caps hold up to that?
  > Any one have any experience with these.
  > I would rather drop my capacitance a little and put another one in
series
  > for a 22KV rating if it is needed
  > But if I feel VERY confident they will hold up with 10 in series I
want to
  > go that way.
  > I don't want performance at the expense of needed up keep due to cap
failures.
  >
  > Luke Galyan
  > Bluu-at-cox-dot-net
  >
  >
  >