RE: H bridge RSG

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Loudner, Godfrey by way of Terry Fritz <twftesla-at-qwest-dot-net>" <gloudner-at-SINTE.EDU>

Hi 

To see the design of a really good MOT powered tesla coil, go to
http://www.saunalahti.fi/dncmrc/technical.html . I understand that Marco's
coil has been run again and again without problems. Usually the main
problems with MOT powered coil are quenching at the spark gap and tripping
service main breakers. Marco's coil uses European style MOTs which use 240V
primary voltage which results in less current draw. His use of a rotary
spark gap helps to control current flow at the gap. I'm not sure just why
Marco's coil works so well, but he did something that was absolutely
correct. You should seriously study his design.

Godfrey Loudner

> -----Original Message-----
> From:	Tesla list [SMTP:tesla-at-pupman-dot-com]
> Sent:	Saturday, May 19, 2001 11:25 AM
> To:	tesla-at-pupman-dot-com
> Subject:	H bridge RSG
> 
> Original poster: "Ray Haynes by way of Terry Fritz <twftesla-at-qwest-dot-net>"
> <ray.haynes-at-home-dot-com>
> 
> I'm moving full speed on my MOT powered DC coil and was searching the
> pupman
> archives (that's what they're for, right? ;-) ) for information. I found
> postings about an H bridge RSG. There were some comments about how that
> approach charged the cap with alternate polarities and that this might be
> hard on the cap. I didn't see any resolution on that.
> 
> Question (rhetorical?):
> Since the tank cap forms a resonate circuit with the primary and resonate
> circuits oscillate back and forth charging the cap first one way then the
> other, doesn't that mean all caps used in the primary tank circuits must
> be
> happy with AC charging? Also this seems to indicate that the alternating
> charge cycles of an H bridge RSG are not a problem, true?
> 
> Ray
> 
>