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RE: [TCML] spark gap substitute...?
Daniel,
What you are describing is, essentially, an SSTC, or solid-state Tesla coil. The function of which is based on an input signal of a lower power than what you are getting through the transistor or, in this case, SCR. The modulation of a SSTC can be very complex when attempting to avoid destroying the driver circuitry. My recommendation is to build a driver from Steve Ward's web site (steve.4hv.org) or build a SISG. The sidac spark gap is designed to replace the common, dielectric-breakdown spark gap with a solid-state spark gap with a very high voltage rating to allow for use of small NSTs and MOTs or low-voltage PTs.
Wishing you the greatest of luck,
Christopher Karr
> Date: Tue, 26 Jan 2010 20:11:19 -0800
> From: leedanieljoseph@xxxxxxxxx
> To: tesla@xxxxxxxxxx
> Subject: [TCML] spark gap substitute...?
>
> Hello all,
>
> I'm having difficulty getting my stationary spark gap to work properly. I
> am wondering; is it possible to use an optocoupler (triggered by a 555 timer
> or maybe a function generator) to trigger a pair of massive SCRs to imitate
> the function of a spark gap?
> The biggest SCRs I've seen can handle 1kv (probably rated in DC, but i'm not
> sure), so it couldn't be too big of a coil. I'm just wondering if this
> would work or if I'm missing something obvious.
>
> Thanks,
> daniel
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