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The circuit uses an
inexpensive C-MOS inverter package and a few small capacitors to drive two power
MOS transistors from a 12v to 15v supply. Since the coupling capacitor values used
to drive the FETs are small, the leakage current from the power line into the
control circuit is a tiny 4uA. Only about 1.5mA of DC is needed to turn on and off
400 watts of AC or DC power to a load.
Click on Drawing Below to view PDF version of Schematic
