Re: A New TC Topology

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

Original poster: "Finn Hammer by way of Terry Fritz <twftesla-at-qwest-dot-net>" <f-h-at-c.dk>

It would appear to me, that you have a pulsed supply, so that your
rotary often presents electrodes, when there is no potential across the
cap, to initiate a discharge.

You should use either a cmoothing cap, or even better rectify 3-phase.

Read here:

http://www.richieburnett.co.uk/dcresist.html

Cheers, Finn Hammer

Tesla list wrote:
> 
> Original poster: "S & J Young by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<youngs-at-konnections-dot-net>
> 
> Hi List,
> 
> Being a glutton for punishment, I tried yet another DC powered TC
> arrangement.  This runs my twin 4 x 23 research coil with streamer length
> set at 4 feet.  DC supply is 10 KV from dual MOT doublers and about 6 mF
> filtering on the output.
> 
> The DC supply goes to a 200 mH charging reactor in series with a string of
> 1N5408s as a de-Qing diode.  This goes to a variable speed RSG set up to
> function as a SPDT switch.  With the RSG gap at position 1, the charging
> circuit charges up the tank cap to about twice the DC supply voltage.  As
> the SRG moves to position 2, the tank cap discharges into the primary.  The
> RSG allows the BPS to be varied from 1 to 400 or so BPS.
> 
> Results are a mixed bag.  On the one hand, the 48" streamers are bright and
> the setup is fairly efficient electrically.  But on the other hand, I could
> not achieve smooth operation above about 100 BPS.  Operation was erratic and
> uneven for some reason.  DC input power rapidly varied quite a lot and it
> was difficult to take readings.  DC power was in the range of 700 to 780
> watts for the streamers to start connecting at 48 inches (BPS between 200
> and 400).  Very unsatisfying operation.
> 
> Anyone have any ideas why this setup doesn't run more smoothly?
> 
> --Steve