Reverse voltage protection circuit

Details Reverse voltage protection circuit Reverse voltage protection circuit

1994-12-22

1996-08-13

Gaffin, Jeffrey A.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific quantity comparison means

361 82, H02H 318

Patent

active

055462642

ABSTRACT:
An apparatus for providing reverse protection to an electronic circuit is provided. The electronic circuit has a positive input terminal and a negative input terminal. The positive input terminal is coupled to a positive battery terminal via the apparatus. The negative input terminal is connected to a negative battery terminal. The apparatus includes a MOSFET transistor having a gate terminal, a drain terminal and a source terminal. One of the drain terminal and the source terminal is connected to the positive battery terminal and an other of the drain terminal and the source terminal is connected to the positive input terminal. One end of a resistor is connected to the gate terminal. One end of a pair of Zener diodes is connected to the gate terminal. The other end is connected to the source terminal.

REFERENCES:
patent: 4857985 (1989-08-01), Miller
patent: 5109162 (1992-04-01), Koch et al.

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