Only about 1.5mA of DC is needed to turn on and off 400 watts of AC or DC power to a load.
Friday, February 19, 2010
CHARGE COUPLED BI-DIRECTIONAL POWER MOSFET RELAY
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.
Only about 1.5mA of DC is needed to turn on and off 400 watts of AC or DC power to a load.
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