Secondary: ********** d = 6,3 cm h = 41,0 cm (43 cm PVC form, ratio 6,5:1) N = 2000 wired = 0,2 mm wirel = 396 m RDC = 239 ohm RAC = 242 ohm computed f0: 348 kHz computed L: 35,6 mH computed C: 5,86 pF computed XL: 110804 ohm estimated Q0: 62 measured f0: 333 kHz (2nd mode at 753 kHz) measured L: 45,4 mH (gives C = 5,03 pF) measured RDC: 267 ohm measured Q0: 60 (without sparks) Primary: ******** d = 11,2 cm h = 7,5 cm N = 13,75 wired = 2,0 mm RDC = 0,023 ohm RAC = 0,122 ohm computed L: 18,61 uH measured L: 19,00 uH (19,3 uH with wiring, gives C = 12,05 nF) computed XL: 38,8 ohm computed Qp: 318 Together: ********* measured f1: 283 kHz measured f2: 410 kHz (average: 346 kHz) measured coupling k: 0,36 computed Q = 1/(1/Qp+k/Qs) : 109 (without sparks) Feedback: ********* d = 11,2 cm h = 1,7 cm N1 = 2 N2 = 8 N3 = 16 L3 = 46,9 uH wired = 0,4 mm Primary & Secondary runtime measurement (small sparks): ******************************************************* f1 = 353 kHz (average: 366 kHz) f2 = 380 kHz directly driven f1 = 291 kHz (average: 353 kHz) f2 = 415 kHz with 10,2 nF primary serial capacitor f1 = 273 kHz (average: 333 kHz) f2 = 394 kHz with 13,3 nF primary serial capacitor re-measured whole secondary f0 = 345-350 kHz re-measured primary & secondary f0 = 333 kHz (2nd peak at 377 kHz) (TTL generator + osc.)