Re: Sparks jumping from 4' to 9' (was Re: 20 joules)

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: Steve Ward <steve.ward@xxxxxxxxx>

You bring up another interesting observation.  CW (continuous wave)
output seems to be limited to short brushy sparks (they dont grow
enormously despite the continuous transfer of power).  Now, its simple
enough to do a direct comparison between a SSTC thats running pulsed
(say a 8.33mS pulse, common for 60hz driven SSTCs) or running CW.  The
CW sparks seem to be a bit shorter for a given input voltage.  I dont
have enough power to handle a BIG CW coil so i cant compare the two as
the sparks get much longer than 10-12".  But at smaller powers (under
2kW), it seems that just the act of interrupting a C-W coil allows it
to produce better sparks.  But maybe i am just being fooled by the
filter capacitor voltage getting dragged lower with CW... Perhaps i
will do a more complete comparison between CW and pulsed this winter
when these old-style SSTCs are more appropriate for indoor coiling
;-).

Steve

On 8/9/05, Tesla list <tesla@xxxxxxxxxx> wrote:
> Original poster: "Dmitry (father dest)" <dest@xxxxxxxxxxx>
>
>  > Original poster: Steve Conner <steve@xxxxxxxxxxxx>
>  >
>  > On a broader note, all this kind of suggests (to me anyway) that the
>  > key to long sparks is filling a large enough volume of space with a
>  > big enough electric field to drive growth, for long enough to let the
>  > growth complete.
>
> what about powerfull cw coil? or powerfull disruptive coil, working in a
> field of cw one? :-)
>
> -----
> I have run coils up to 20KW in residential neighborhoods.  I have
> received death threats and have had the police, fire, and department of
> water and power all show up at the same time. Screw 'em all. Keep firin'.
> (c) Mark Barton  29-09-95
>
>
>