Reverse battery protection circuit

Details Reverse battery protection circuit Reverse battery protection circuit

1993-06-14

1995-07-18

Hoff, Marc S.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific quantity comparison means

361 56, H02H 318

Patent

active

054347394

ABSTRACT:
A protection circuit (10) for protecting internal circuitry of an integrated circuit (26) from a reverse battery connection has been provided. The protection circuit includes a pass transistor (14) which is rendered operative when the supply voltage is properly connected to the integrated circuit. However, when the power supply is improperly connected, a second transistor (32) becomes active thereby rendering the pass transistor inactive and not allowing the reverse supply voltage to be applied to the internal circuitry.

REFERENCES:
patent: 5126911 (1992-06-01), Contiero et al.

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