this uses 2 power supplies. one for the toroid (low voltage low power), to create the oscillations around 20-30khz
The HV (doesn't need to be KV, 100V?) power supply is to charge the capacitors.
when the pnp npn is not conducting (largest time) the caps get charged by the HV.
The diodes prevent the HV to flow into the toroid when the transistors are not conducting.
diodes are ultra fast (uf4007)
when the toroid gets the voltage(low), the base resistor creates a current, and opens the transistor. a big current starts to flow, through the collector side of the toroid, giving rise to a magnetic field in the toroid, that shuts down, the base current, because of its opposite polarity.
At the same time, the HV+ an HV- gets shorted out. Its only a short pulse, but still, the HV supply must be able to handle this short cut. Also the transistors need cooling, because of this shortcut.
Most importantly, the capacitors, (charged, at the relative long duration of no pulse). get discharged due to the shortcut(created by the pulse)
Due to the fact these are 2 capacitors in series, the bifilar coil, in between the 2 capacitor gets a pulse from both ends of the 2 capacitors. A pure dielectric discharge. fast and energetic. (hairpin circuit)
The whole setup would need to be tuned properly. the transistors, would need to handle high voltage/high current, matched to the HV power supply, and the capacitors, need to be tuned to the time the transistors are off. to charge to a high enough voltage (pF range i guess for the 20-30 khz range).
then the most important... the bifilar coil. it needs to be tuned to that relative low frequency. A cap in parallel(what I normally tune with), would mean another cap in series with the system... eh...??? :shocked: most of my coils resonate at 600+ KHz...
And Why do I want all this? because these pulses bring the coil in to its resonant voltage rise. At the same time, there is no magnetic field in the coil, only a dielectric (due to counter rotation of the pulses).
This would give a gain in energy, due to the resonance. that's what I want to measure.
The loss in this system, is the heat produced, from the shortcut of the power supply of the capacitors. but, even that could be engineered out. (use another pulse/transistor to disconnect the HV power supply, when the caps discharge)