Re: HV Book (wasRe: Electrometer design) (fwd)

[Steven Roys <sroys@xxxxxxxx>]

---------- Forwarded message ----------
Date: Mon, 12 Jul 2004 21:34:47 -0500
From: Dr. Resonance <resonance@xxxxxxxxxx>
To: High Voltage list <hvlist@xxxxxxxxxx>
Subject: Re: HV Book (wasRe: Electrometer design) (fwd)


Yes, you get a lot of spikes back into the xmfr.

It's best to put the xmfr across the sparkgap and run the cap in series with
the primary tap.  When the gap fires it provides a short circuit on the xmfr
which helps to reduce the RF in the sec winding of the power xmfr.  You
should also use a Terry Filter if running a NST.  A pole pig usually
survives with just a safety gap and 6 --- 200 Watt 240 Ohm resistors in
parallel.  They absorb the spike before it gets into the xmfr.

Dr. Resonance

Resonance Research Corporation
E11870 Shadylane Rd.
Baraboo   WI   53913
----- Original Message -----
From: "High Voltage list" <hvlist@xxxxxxxxxx>
To: <hvlist@xxxxxxxxxx>
Sent: Monday, July 12, 2004 5:28 PM
Subject: Re: HV Book (wasRe: Electrometer design) (fwd)


> Original poster: Steven Roys <sroys@xxxxxxxx>
>
>
>
> ---------- Forwarded message ----------
> Date: Mon, 12 Jul 2004 14:12:05 +0800
> From: Peter Terren <pterren@xxxxxxxxxxxx>
> To: High Voltage list <hvlist@xxxxxxxxxx>
> Subject: Re: HV Book (wasRe: Electrometer design) (fwd)
>
> Is the primary cap across the transformer so regrettable? I have always
run
> mine this way. My 32 inch coil generates 96 inch sparks (ie 3 times ratio)
> although I do run at a high break rate of 1200bps. I have not been able to
> achieve similar results with the spark gap across the transformer.
> Peter
> http://tesladownunder.iinet.net.au/
>
> > From: Malcolm Watts <m.j.watts@xxxxxxxxxxxx>
> > Subject: HV Book (wasRe: Electrometer design)
> >....   there were a couple of TCs  featured in there (nothing big and
> regrettably, at least one had the
> > primary cap wired across the transformer)
>
> > Malcolm
>
>
>
>