Re: OBIT Qs

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

Original poster: "S.Gaeta by way of Terry Fritz <twftesla-at-uswest-dot-net>" <sgtporky-at-prodigy-dot-net>

Hi Pete,

My OBIT is center tapped, and still will be when I am done (probably by the
end of next year) . The secondary is actually in two parts. There are two
distinct coils wound on each leg of the core. The inner lead of each is tied
to ground and the two outer leads are at 5KV and 180 degrees out of phase.
You are right, I haven't run across anything above 7.5KV that isn't center
tapped.

Why are you prejudiced against center tapped transformers?

Sue

----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Thursday, December 14, 2000 7:56 PM
Subject: OBIT Qs


> Original poster: "Peter Lawrence by way of Terry Fritz
<twftesla-at-uswest-dot-net>" <Peter.Lawrence-at-Eng.Sun-dot-com>
>
>
> Sue Gaeta,
>           a question about the OBIT you are rewinding. Are OBITs single
ended
> or are they center tapped.
>
> I just found out that (by law???) any NST over 7.5kv is center tapped, and
> my set up is currently for a 6-20 single ended NST. I want to try higher
> voltages to see how spark varies with power on my "small" coils. I'ld like
> to try 6, 7.5, and 9 kv, but I'll go for a 10kv OBIT instead of the 9kv
NST
> if the OBIT is single ended.
>
> -Pete Lawrence.
>
> (ps, anyone, if OBITs are single ended, where can I get one in
California...)
>
>
>