Power supply protection circuit capable of preventing a...

Details Power supply protection circuit capable of preventing a... Power supply protection circuit capable of preventing a...

H - Electricity

02

H

H02H 3/18 (2006.01) H02H 11/00 (2006.01)

Patent

CA 2150425

In a power supply protection circuit for use in a mobile satellite communication apparatus which is connected to an external power supply for driving a load circuit therein, first and second relay switches electrically connect a power supply line to the load circuit when the power supply is normally connected in polarity and interrupt the power supply line leading to the load circuit when the power supply is erroneously connected in polarity. The first and the second relay switches are controlled by a diode. A resistor supplies a current level adapted to operate the first and the second relay switches and the diode.

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