3 bifilar pancake coils
1 being pulsed 50% duty with a mosfet.
When the mosfet opens the circuit, the inductive negative voltage spike (back EMF) is captured in a capacitor and stored until the mosfet closes the circuit again.
When the mosfet closes the circuit, the capacitor is being discharged through the mosfet and L2, giving a fat kick.
L3 is coupled (they all are) to L2 and gets to see this kick, producing a fat current from it.
L3 at the same time is resonant from L1 being pulsed. L3 is tuned to a low frequency(100kHZ) , L2 is not tuned (resonant at > 1500kHz).
The current induced in L3 (and L1) by the kick of L2 is generating current, in L3, at the same moment that it has a maximum voltage.
1 being pulsed 50% duty with a mosfet.
When the mosfet opens the circuit, the inductive negative voltage spike (back EMF) is captured in a capacitor and stored until the mosfet closes the circuit again.
When the mosfet closes the circuit, the capacitor is being discharged through the mosfet and L2, giving a fat kick.
L3 is coupled (they all are) to L2 and gets to see this kick, producing a fat current from it.
L3 at the same time is resonant from L1 being pulsed. L3 is tuned to a low frequency(100kHZ) , L2 is not tuned (resonant at > 1500kHz).
The current induced in L3 (and L1) by the kick of L2 is generating current, in L3, at the same moment that it has a maximum voltage.