I don't recommend using an opamp to drive a transformer but this is just a simple circuit
Shake to start or wait a few seconds
Outputs +/-85VDC to go through a 60Hz H-bridge amplifier to run mains equipment
Third op amp to show expected output if using a good high voltage bridge to repurpose the AC wave
Slow the scale down to 300us/s to watch the high frequency pulses of the circuit, back to ms/s for the sinewave output
