The first secondary was 22 inches of winding on a 6 inch plexy form using AWG28
magnet wire, 2464 feet of wire
at 112 Khz running frequency. Achieved 50/60 inch sparks; however, the primary was
drawing to much current and things were getting hot due to the high running frequency,
To reduce the running frequency, decided to wind a new secondary using AWG31
magnet wire with 25 inches of winding with a running frequency of 69 Khz.
Primary is 9 turns of 1/4 " copper pipe. MMC is a total of .45uf @ 4kv.
Was able to achieve 75 to 80 inch sparks. Did have to raise secondary up
2.5 inches reducing coupling.
A few changes over the months trying to improve run times as high bit rate.
Pulse mode just loves to put stress on the MMC, Doubler, and poor IGBTs. Due to my
heavy hand on the interrupter, have been replacing components trying to
improve run times. The new MMC of 3 x 10 banks of .15uf @ 2kv CDE caps. = total of
.5uf @ 6KV MMC does not even get warm now.