New induction head for the heater project. This time 10T of 1/4" copper tubing. Capacitors are 20x Wima 0.24µF MKP10, 250VAC. Measured capacitance at room temperature is 4.72µF and inductance 2.9µH, for a F0 of 43kHz
Low power test at 24V in, 240W DC input. Seems to work.