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Circuits
designed by David Johnson, P.E.
Last Updated on:
Saturday, December 23, 2017 03:21 PM
Master Category List - Dave's Circuits
Text & Graphics Copyright ©
David A. Johnson, P. E. -- ALL Rights Reserved.
LINKING to Dave's circuits is permitted but DO NOT COPY to your WEB SITE
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AC Power
Control Circuits FET Circuits |
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CHARGE COUPLED
BI-DIRECTIONAL POWER MOSFET RELAY
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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. |
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Click on Drawing Below to view PDF version of Schematic |
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