Re: H bridge RSG

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

Original poster: "Luc by way of Terry Fritz <twftesla-at-qwest-dot-net>" <ludev-at-videotron.ca>

Hi LR

Please send your schematic to terry-at-hot-streamer-dot-com and inform
the list after, I'm really interest, Tx.

Cheers,

Luc Benard 

Tesla list wrote:
> 
> Original poster: "LWRobertson by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<LWRobertson-at-email.msn-dot-com>
> 
> Hi Ray and Steve
> 
> A classic coil discharges at some voltage, then
> the RF oscillates around zero, approximately. The
> H-bridge never stops at zero, but goes straight
> from +V to -V, and oscillates there, adding the
> RF amplitude to the DC voltage.
> 
> Advantages are very reliable firing, it will never
> power arc, and the primary voltage is doubled,
> adding some oomph. I would think it should work
> well for MOT power supplies. It can be run at any
> speed.
> 
> The disadvantages are the necessity for a largish
> storage capacitor, also rated for RF; and the huge
> voltage reversals, probably +2V to -2V almost.
> 
> At the moment its running on a 8 inch rotary with
> a maximum of 240 BPS. I'm (slowly) getting parts together
> for a 12 inch which should be good for 360 BPS,
> and ultimately hope to make a 22 inch with 24
> electrodes. Expensive, though.
> 
> Its a simple enough circuit - I'll be glad to send a
> schematic if you want.
> 
> LR
> 
>   ----- Original Message -----
> From: "Tesla list" <tesla-at-pupman-dot-com>
> To: <tesla-at-pupman-dot-com>
> Sent: Saturday, May 19, 2001 9:25 AM
> 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
> >
> >
> >