Re: unknown prob

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

Original poster: "D.C. Cox by way of Terry Fritz <twftesla-at-qwest-dot-net>" <resonance-at-jvlnet-dot-com>



Scott D:

If you blew your xmfr because you were running the xmfr and cap without the
TC load, your Q factor was extremely high thus increasing the potential
across the xmfr until it blew.

If you ever hook a cap up to a xmfr you need a reasonable load such as an
inductor or resistor in the circuit to prevent the Q factor from going too
high and creating a very high resonant potential.  You are lucky the cap
didn't blow as well.

Also, always put your spark gap across the xmfr and then the cap in series
with the primary in a TC circuit.  When the gap fires it creates a short
circuit across the xmfr and reduces the chance of parasitic oscillations
developing and feeding back into the xmfr windings.

Best regards,

Dr. Resonance



----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Saturday, August 31, 2002 7:35 PM
Subject: Re: unknown prob


> Original poster: "BunnyKiller by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<bigfoo39-at-telocity-dot-com>
>
> Tesla list wrote:
>
> >
> > Original poster: "Ed Phillips by way of Terry Fritz
> > <mailto:twftesla-at-qwest-dot-net><twftesla-at-qwest-dot-net>"
> <mailto:evp-at-pacbell-dot-net><evp-at-pacbell-dot-net>
> >
> > Tesla list wrote:
> >>
> >> Original poster: "uk-teslacoil.co.uk by way of Terry Fritz
> >
> > <mailto:twftesla-at-qwest-dot-net><twftesla-at-qwest-dot-net>"
> > <mailto:duncanr-at-uk-teslacoil.co.uk><duncanr-at-uk-teslacoil.co.uk>
> >>
> >> Hi All, I was experimenting earlier on today with a new MMC that I am
> >> building, on connecting the new MMC I blew the transformer
:-(((((((.....
> >> The MMC was not wired to the Tesla coil at all, I removed the Filter
> >> circuits from the HV side of the transformer... and wired it as follows
HV
> >> SIDE NST transformer 1) HT1 on transformer to MMC 2) MMC to spark gap
3)
> >> Spark gap to HT2 on transformer. any ideas Duncan
> >
> >         Gap too wide?  Resonant overvoltage breakdown?  Or was the gap
IN
> > SERIES with the capacitor? Ed
>
> sounds like all were in series.....
>
> also not a good idea to run this setup as it was explained...  overvolting
> could be a real problem here...
>
> BTW  was it ever settled as to which way is the best way to hook up the
cap /
> spark gap???
>
> cap parralell to HV supply with gap in series to primary   or   cap series
to
> primary with gap paralell to the HV supply????
>
> Scot D
>
>
>
>