Re: High Inductance Secondaries and DRSSTCs

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

Original poster: "Malcolm Watts" <m.j.watts-at-massey.ac.nz> 

On 9 Sep 2004, at 7:42, Tesla list wrote:

 > Original poster: "Eastern Voltage Research Corporation"
 > <dhmccauley-at-easternvoltageresearch-dot-com>
 >
 > Does anyone remember the discussions that were awhile back regarding
 > high number of turn secondary coils???
 >
 > I'm currently designing my secondary coil for my "Psychosis Coil"
 > which will be 48" winding length, 25 AWG, on a 12.5" Dia. coilform.
 > About 2700 total turns.  Total Ls of the secondary is about 440mH and
 > resonant frequency of the entire secondary / toroid assembly is about
 > 30kHz.
 >
 > Right now, the only bad thing about this is i will need a larger
 > number of primary turns to get down to the resonant frequency I want
 > (i plan on using about a 0.3 to 0.4uF primary capacitor)
 >
 > Anyone else see anything troubling with my secondary???  I can't.  I
 > should have probably used a larger gauge wire (maybe 22 AWG), but i
 > just bought a 68 LB spool of this 25 AWG stuff.

Nothing too major but the losses won't be the lowest. The wire
diameter is barely 1 skindepth at 30kHz. It'll work.

Malcolm