This weekend I built a prototype magnifier setup, a small one. Performed
the tests in the living room on the coffee table. I wound
the primary out of 1/4" pyro (copper covered mineral insulated electric
cable) 16 turns around a 6" daimeter former. Held together with string and
bamboo plant sticks. The secondary is 150 turns of 0.56mm magnet wire on
a 4" former. The 1/4 wave resonator is from my TC and is 700 turns of
0.56mm magnet wire on a 7" former.
The 1/4 wave resonator from the TC has resonant frequency of 220KHz
when in a two coil system with 12" toroid.
To tune in I had to put the tap on the primary on turn 16,
which supprised me as turn 8 is used for a TC. Had to remove the toroid
to increase the resonant frequency to get better tune.
I could only run the system up to 20% input power before the primary/
secondary gap broke down.
Power supply is 10KV -at-100mA
Got 8" crona/sparks as output.
1) Why do I need such a large primary? Has the overall resonant
2) How do you build a driver that does not break down? Will dropping
the whole lot in oil help?
Thanks for your help