I did a setup again today using 24 volts input. Output 350 Khz and the scope showing 120 vpp open circuit. The wave form on the scope was a pure sine wave That impressed me.

To keep the heat down I used a 20 watt 24 volt light bulb placed at the input of the 24 volt power supply.

I then installed a bridge rectifer charging a 300 Mf cap. It took about 5 sec. to charge the cap to max voltage of 80 volts.