Re: Terry's DRSSTC - The Bridge...

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "Malcolm Watts" <m.j.watts@xxxxxxxxxxxx>

Hi Terry,

On 10 Dec 2004, at 22:35, Tesla list wrote:
<snip>

> BTW - Here is what the AC wave form looks like going into the thing:
>
> http://hot-streamer.com/TeslaCoils/MyCoils/DRSSTC/DRSSTCinputWaves.gif
>
> Just the 120VAC with ~~40 amp pulses charging the buss caps.  It would
> be cool if some triac or other simple circuit could control the
> voltage here and eliminate the variac.  I think you could control off
> either voltage or limit the current pulses.  Maybe it could even do
> the "soft start" for the buss caps...  Although this is the last of my
> concerns at the moment, it will certainly be something to look into
> once the thing is working.!  Getting rid of the variac is one thing
> almost begging to be done!!
>
> Cheers,
>
>          Terry

Might be time to consider an active PFC front end. That would also
increase the input voltage somewhat.

Malcolm