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Re: familiair with rumkorff inductors? (fwd)
---------- Forwarded message ----------
Date: Sat, 20 Dec 1997 19:31:04 -0700
From: "D.C. Cox" <DR.RESONANCE-at-next-wave-dot-net>
To: Tesla List <tesla-at-pupman-dot-com>
Subject: Re: familiair with rumkorff inductors? (fwd)
to: solva
You definitely don't want to use a Ruhmkorff coil to use as the power
source for a small Tesla coil. The R coil is similar to a larger version
of the Ford model T coil and produces very high voltages without much
current (a few ma or less). You need current, not voltage to charge your
caps. Any value between 7 and 15 kV works great which is why most
experimenters use NST's (neon sign transformers) as their power source. A
common 30 or 60 ma unit rated 12 kV will work just fine. Matching cap size
would be either .005 MFD for the 30 ma unit or .01 MFD for the 60 ma unit.
Good luck and happy coiling!
DR.RESONANCE-at-next-wave-dot-net
----------
> From: Tesla List <tesla-at-pupman-dot-com>
> To: tesla-at-pupman-dot-com
> Subject: familiair with rumkorff inductors? (fwd)
> Date: Saturday, December 20, 1997 4:31 PM
>
>
>
> ---------- Forwarded message ----------
> Date: Sat, 20 Dec 1997 22:15:40 +0100
> From: solva-wijnschenk <solva-at-xs4all.nl>
> To: "tesla-at-pupman-dot-com" <tesla-at-pupman-dot-com>
> Subject: familiair with rumkorff inductors?
>
> dear all,
>
> I am reading tons of stuff to get myself to build an own
> coil safely. I could lay hand on a original rumkorff inductor
> which is a special constructed coil with integrated interruptor
> producing arches of 10 cm easily out of 12 volt dc.
>
> While this represents maybe >80.000 at low kva (less then 60
> watts!!). it seems to me that it is a (kind of) safe way to
> build the primary tankcircuitry of the coil with.
>
> Is there anybody familiair with this way of constructing or
> is it not possible?
>
> thanks for your soon reply!
>
> BTW is there a kind of newwsgroup to subscribe to to get a wider reply??