RE: [TCML] Small coil results

["Ben Sneath" <bsneath@xxxxxxxxxxxxxxxx>]

> I too have to wonder if a 5000 BPS figure is achievable
> with a static gap, but I don't see that having a 50 or 60
> Hz line frequency relates to this.  It's commonplace to
> have multiple bangs per mains half-cycle.  With a
> high-current power supply and small capacitor, a high BPS
> is guaranteed.  What's less than certain is whether the
> gap will quench between bangs, or if it will power arc.
> 

Today it did power arc for a second, but that was when the
gap had heated up quite a bit, so 
it is actually very close to power arcing. Also once the
spark gap heats up, the coil would go 
from throwing 10" sparks to barely breaking out with 3". 
According to my cro, it _is_ running at something like
3-5kbps. Thing is, i cant get a proper 
reading off the scope at high sweep rates, it refuses to
trigger and give a stable trace so i put 
it back to 2 ms/div and could quite clearly see the 50Hz
modulation as blocks of hash, but 
sticking out of the top this hash, there were 40 or so
spikes almost all the same height, 
increasing in frequency toward the center and spreading
again at the end. ie, these are the 
bangs and they are occurring as one would expect, faster at
the peak of the supply voltage 
hard to explain without sending a picture, but as usual,
haven't got a camera...

ben
 
> Regards, Gary Lau
> MA, USA
> 
> > -----Original Message-----
> > From: tesla-bounces@xxxxxxxxxx
> > [mailto:tesla-bounces@xxxxxxxxxx] On Behalf Of David
> > Rieben Sent: Monday, April 14, 2008 11:02 PM
> > To: Tesla Coil Mailing List
> > Subject: Re: [TCML] Small coil results
> >
> > Ok, I supppose I didn't read Ben's original posting
> > closely enough. I was making that proverbiable mistake
> > of "assuming" that he must be running with a RSG to even
> > suggest a 5K BPS rate. Maybe also when you mentioned
> > "fire and clear quickly enough to support 5,000 BPS"
> > made me think of MECHANICAL seperation to "clear". I
> > think we are definitely in agreement that that kind of a
> BPS claim with a static gap, when the line frequency is 50
> > or 60 hz, SEEMS absurd, though. Anyone care to explain
> > how this could be?
> >
> > David
_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxxxxxx
http://www.pupman.com/mailman/listinfo/tesla