Re: NST PFC cap question

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

Original poster: "BunnyKiller by way of Terry Fritz <twftesla-at-uswest-dot-net>" <bigfoo39-at-telocity-dot-com>

Tesla list wrote:

> Original poster: "kevin wilson by way of Terry Fritz
<twftesla-at-uswest-dot-net>" <thebiggiantkevin-at-hotmail-dot-com>
>
> I just hooked up a pair of 100uF 100V non-polar electrolytic caps in series
> (closest to the needed 41uF I could get) to the primary of my 15kV, 30mA NST
> for phase correction. (I don’t fully understand the PFC idea, but it sounded
> good and I thought Id give it a try) After running for 10 seconds they were
> getting warm and after another 10 seconds they were significantly warmer.

Snipperzzz...

Hi Kevin ...

2 things going against you here...

1 .  PFC caps are hooked up in parallel with the 120V in
2.   you need motor run caps   ( electrolytics wont work with AC too long
they go BANG !! )

the motor run caps are normally 6" tall 3" wide and 1-2" thick  oval shaped
in an aluminum case
try to find a couple that are rated for 240V 30 or so uF.

Scot D