Re: tesla virgin no more ! but need help

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

Original poster: Bart Anderson <classi6-at-classictesla-dot-com> 

Hi Steven,

Because your using a "static gap", then you will have to build 1 string.
What Dr. R has shown below is for an SRSG LTR gap.

So, yes, if you use 17, 18, or 19 caps in series, just build 1 string.
The strings would work out as follows:

17 caps, series connected, .0088uF, 27.2kV
18 caps, series connected, .0083uF, 28.8kV
19 caps, series connected, .0079uF, 30.4kV

Hope this helps,
Bart

>No, you need 2 strings in parallel to get the 17.6 nF required.
>
>Dr. Resonance
>
> >  >
> >  > .15 uF / 17 caps per string = .0088 uF per string x 2 strings in
>parallel = .0176 uF =
> >  > 17.6 nF bank total capacitance
> >  >
> >  >
> >  > Your .02 uF rating would be extreme even for a synchro RSG type
>sparkgap
> > and
> >  > way to large for a stationary sparkgap.
> >  >
> >  >
> >  > Dr. Resonance
> >  >
> >  > Resonance Research Corporation
> >  > E11870 Shadylane Rd.
> >  > Baraboo   WI   53913



Tesla list wrote:

>Original poster: "steven hyman" <steve502-at-bellsouth-dot-net>
>thanks
>based on some of these replies I will rework My MMC today
>if best capacitance -at- 50k ohm impedance is .0085uf
>and 18/19 1600vt cap per string will meet voltage requirements  -at- 15kv x
>2.5=37.5kv
>
>then one string 17  caps .15 uf /1600 vt
>total capacitance .0088/ total voltage 27.2kv
>
>whether I use 17/18/or19 caps per string
>I should only use 1 string to better meet capacitance requirements
>Right
>??????
>
>
>----- Original Message -----
>From: "Tesla list" <tesla-at-pupman-dot-com>
>To: <tesla-at-pupman-dot-com>
>Sent: Friday, February 06, 2004 10:04 AM
>Subject: Re: tesla virgin no more ! but need help
>
>
> > Original poster: "Dr. Resonance" <resonance-at-jvlnet-dot-com>
> >
> >
> > The math goes:
> >
> > A 15 kV, 30 mA NST has an effective impedance of 50K Ohms.
> >
> > Capacitor value for resonant match = .0053 uF, ie, 5.3 nF
> >
> > With stationary sparkgap, best capacitance = 1.6 * Cres = 1.6 * 5.3 nF =
> > 8.48 nF = .0085 uF
> >
> > For synchro RSG, best capacitance = 3.2 x Cres = 17 nF = .017 uF
>(this is
> > absolute max value)
> > 2.8 to 3.2 is good range for synchro RSG's.
> >
> >
> > Voltage rating using MMC type caps:
> >
> > Erms = 15 kV     15 kV x 2.5 = 37.5 kV (total DC rating for each string)
> > this requires 18-19 caps per series string
> >
> > with synchro RSG and cheating a bit on the voltage rating:
> >
> > .15 uF / 17 caps per string = .0088 uF per string x 2 strings = .0176 uF =
> > 17.6 nF bank total capacitance
> >
> >
> > Your .02 uF rating would be extreme even for a synchro RSG type sparkgap
>and
> > way to large for a stationary sparkgap.
> >
> >
> > Dr. Resonance
> >
> > Resonance Research Corporation
> > E11870 Shadylane Rd.
> > Baraboo   WI   53913
> >  >
> >  > My caps are Cornell 942C16P15k   rated -at-.15uf 1600VDC . I figured on a
> > total
> >  > capacitance
..............