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Re: A 20 kV DC tank supply
tesla-at-pupman-dot-com on 08.12.98 11:26:05
To: tesla-at-pupman-dot-com
cc: (bcc: Marco Denicolai/MARTIS)
Subject: Re: A 20 kV DC tank supply
Original Poster: "Steve Young" <youngs-at-konnections-dot-com>
>As to how to transfer energy to your primary capacitor from your
"flywheel"
>capacitor, consider using an H-Bridge configuration, depicted below.
Larry
>Robertson uses such an arrangement, apparently with good success. You
can
>contact him directly for more information, schematics, etc.
+ ----|------------------|-------------------|
| o o
| gap A1 gap B2
| 30 uf o pri C pri L o
=== |----||---OOOOOO----|
| 20 KV o o
| filter gap B1 gap A2
| cap o o
- ----|------------------|-------------------|
>Gaps A1 and A2 simultaneously fire, then Gaps B1 and B2 fire, repeating ad
>finitum. This can be done with a (more complicated) RSG, or you could
>consider using triggered spark gaps. The H-bridge avoids a spark gap
>directly across the flywheel cap.
Some questions:
- why to invert to charging polarity of priC and priL ? Same polarity would
work as well.
- doesn't the 30 uF cap and the tank supply impedance get involved in
creating losses and shifting the original resonance frequency during bangs?
More, an analysis of this circuit seems quite difficult to me. Very much
depends on how much the priC gets discharged at each bang... If it remains
charged (as sure it does) the pulses get asymmetric (e.g. odd bangs at a
higher voltage than even bangs)...
Anybody explained the idea behind this circuit?