Secondary:
**********

    d =  21,5 mm
    h =  40 mm (50 mm form, ratio 1,86:1)
    N = 286
wired =   0,125 mm (0,14 mm with insulation)
wirel =  19 m
  RDC =  30 ohm
  RAC =  41 ohm

Topload (copper toroid):
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  din = 16,6 mm
 dout = 27,4 mm
dpipe = 5,4  mm
   Ct = 1,15 pF

computed f0:     5,66 MHz; 3,92 MHz with topload
computed L:      0,749 mH
computed C:      1,056 pF
computed XL: 26637 ohm
estimated Q0:   26

measured f0:     4,72 MHz with topload
measured RDC:   27 ohm
measured Q0:    94 (according to f-char Q=f0/B3)

Primary (solenoid):
*******************

    d = 36 mm
    h = 16 mm
    N = 4,8
wired =  2,2 mm
  RDC =  2,2 mohm
  RAC = 31,0 mohm
computed L: 0,913 uH (gives C=1,245 with topload / 390pF for IRFP460 class E)
computed Q: 416
computed coupling k: 0,38

Class-E SSTC test:
******************

Cres = 270 pF / 400 V, Cc = 150 nF / 1000 V, L = 120 uH