Re: Gap Losses

From: 	DR.RESONANCE[SMTP:DR.RESONANCE-at-next-wave-dot-net]
Sent: 	Thursday, August 28, 1997 11:10 AM
To: 	Tesla List
Subject: 	Re: Gap Losses

To: Greg

Most curious as to why you selected a direct current power supply (if I am
reading you posts correctly)?  Won't direct current provide additional
quenching problems especially with the very high power level you are


> From: Tesla List <tesla-at-pupman-dot-com>
> To: 'Tesla List' <tesla-at-poodle.pupman-dot-com>
> Subject: Re: Gap Losses
> Date: Thursday,August 28,1997 1:21 AM
> From: 	Greg Leyh[SMTP:lod-at-pacbell-dot-net]
> Sent: 	Thursday, August 28, 1997 1:39 AM
> To: 	Tesla List
> Subject: 	Re: Gap Losses
> Richard Hull wrote:
> > After chewin' on the math for two extremes in my favorite, performer, 2
> > systems, I come to a Zchar. value between 3-6 ohms/gap.  It seems to
> > with yours pretty closely.  Dare we assume this is some sort of
> > range?!
> I'll bet that it is, since ohms/gap determines the losses in the primary,
> and therefore the overall performance of the coil.  If a single gap is
> 0.25 ohm, then a Zchar of 3-6 ohms would give primary Q's in the range of
> 12 to 24. It seems that such unloaded Q values represent a good
> between primary loss and step-up ratio.
> > Probably, it is more of safe range for someone wanting a quick and
> > generalization that won't get them in trouble when designing and
building an
> > important system which has got to work out of the chute.  Ideally, of
> > course, tweaking and dinkin' with the system after construction will
> > the performance. (perhaps by even adding or subtracting gaps!)
> At this point, I am definitely doing everything possible from the
> point of view so that the coil might work 'out of the chute', since even
> simplest jobs, like changing the toroid, will require renting
> equipment a week in advance.
> -GL