Re: Gen 4 Larger coil <assistance please>

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

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

Glenn,

With a topload 12" by 50 inches, you are around the 50kHz mark allright.

With a 14.4 kV polepig, you can fire the caps at 20 kV, so for a power
troughput of 14 kW and a breakrate of 1000 BPS, you should dispence 14
joule at a time, which is possible if your capacitor is 70 nF.

Using MMC calc, set up for the Geek group caps, with a heating coeff. of
22, I get 9 strings of 19 caps, for a total of 171 caps.

You should then tune the coil at 16 turns.

Cheers, Finn Hammer

Tesla list skriver:
 >
 > Original poster: "Glenn by way of Terry Fritz <teslalist-at-qwest-dot-net>" 
<gcerny-at-comcast-dot-net>
 >
 > Hello all,
 > I wound a 15.5 dia piece of C-900 with Formvar 16 AWG
 > to a length of 61 inches a while back.  Now it seems that
 > may be too long of a wind.  The number I crunch say about
 > 50kc resonance and that computed to an un-affordable
 > MMC (400+ caps).
 > Would someone be kind enough to check my math before
 > I strip 15-20 inches of this epoxy coated coil wire off to get
 > the resonance up to a reasonable number?  Thanks.
 > Other particulars are Pole Power 14400-at-1A.  ASRG with 12
 > points variable speed to 5,000 rpm.  Vaccuum static gap.
 > Primary flat spiral copper tube.
 > This project has been "on the shelf" while I built another house
 > and now I'm back and ready to finish it.  Some photos will be
 > posted on my url soon  Nothin' fancy.  html ain't my bag  :-)
 > Sure appreciate it.
 > Glenn