Re: Plastic Capacitors Rating

From: 	Rick Holland[SMTP:rickh-at-ghg-dot-net]
Sent: 	Monday, June 23, 1997 12:07 AM
To: 	Tesla List
Subject: 	Re: Plastic Capacitors Rating

Tesla List wrote:

> I would like to know what the AC RMS voltage rating is on your cap and what
> AC supply voltage you use.
> As I mentioned, I am in discussion with Tom Brown at Plastic Caps and it
> seems that we can get a 27 kv ac rms rated .030 mfd cap for $313.00 or a 30
> kv ac rms rated .030 mfd cap for $410.00.  The higher voltage rating forces a
> step up in case size and increases the cost quite a bit for only an increase
> in rating of 3 kv.

 I'm speaking strictly off the top of my head, but it seems to me that
the refelected EMF would cause voltage spikes much larger than the input
voltage; much like the effect of a kicker coil. I don't have a
percentage rule of thumb, but i'll bet others have!
Just on a gut feel, I always go for 50% over.

      Rick Holland

      The Answer is 42