I'm curious about the physical layout of your coils and the iron wire placement. I see that pairs of coils are in buck mode, from the + sign on them. Does the iron wire go through the center of the coils then double back as in your schematic?
Could you explain why the pairs of coils are in buck mode?
The iron wire is a toroid a coil of insulated iron wire which serves as the magnetic core and a generating coil for recharge of the input (no direct output to input), this is an unusual twist to looping The L1 to L4 are 4 coils in bucking mode to one another. Not shown on the sch: because it is difficult to draw, is that L1 is opposite to L2 and L3 is opposite to L4 on the toroid. As explained by a member here, this will give the flux a circular rotation around the iron core. The cap C1 (400v) creates a parametric oscillation by powering the coils in the switch off time, so inducing multiple frequencies by heterodyning. C2 and C3 supply the biasing and need to be HV of around 400v or C2 will blow, as I have found one day when that happened using only 100v caps, even at 400v C2 can get warm. It is very important that the diodes D1 and D2 are ultra fast for the frequency band that we are working in, they have to be able to block the return path so as the system pumps itself up, so to say, by the adding of same frequencies generated within the system. This toroid when running will vibrate if the frequency band is low, it will also in time heat up if the iron coil is loosly wound. The output ferrite toroid is to isolate the output, as the primary of that toroid is part of the parametric oscillator and important that it should be within the magnetic field of the main iron toroid (that I can't explain why, but I presume it is the interaction of the magnetic fields). I have re-posted below the spectrum shot, it is important to note the power levels due to same frequency addition, it is like two power supplies of 12v @ 10amps in parallel will give you 12v @ 20amps as an example. Regards Mike
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