Re: [TCML] Best design for a 15KV 120mA trans?

[Gary Lau <glau1024@xxxxxxxxx>]

I would disagree with this advice.  Going between a static and SRSG gap
entails, at a minimum, also changing the cap value and primary inductance.
One cannot simply swap a static gap with an SRSG, leaving everything else
unchanged.  The capacitor needs to be a much larger value with an SRSG.  If
a properly sized cap for a static gap were used with an SRSG, the safety gap
would fire non-stop.  If a properly sized cap for an SRSG were used with a
static gap, the NST would draw crazy-high currents.  The tables relating
proper cap size to NST parameters have separate columns for static/LTR and
SRSG gaps.  You'll be disappointed if you try to use the wrong cap size.

Regards, Gary Lau
MA, USA

On Mon, Jan 24, 2011 at 9:10 PM, Jon Danniken <danniken@xxxxxxxxxxx> wrote:

> Mark Crowley wrote:
>
>> Thanks everyone for all the great input!
>>
>> I shall move forward with the SRSG design with LTR since I already
>> have most of the these parts on hand.
>>
>
> You will still want to have a static gap to use at low voltage so you can
> get the primary coil at the right tap (use a ground rod near the toroid for
> this).  Once the primary is properly tuned, then you can sub in your rotary
> gap, and adjust it for the proper gap presentation with your Freau
> controller.
>
> Jon
>
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