Power supply device and electric circuit

Details Power supply device and electric circuit Power supply device and electric circuit

2008-07-08

2008-07-08

Sherry, Michael J (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific current responsive fault sensor

C361S093800

Reexamination Certificate

active

11305221

ABSTRACT:
An FET for malfunction check is connected between the gate and source of an FET for power-source output control, which is connected in series in a power output line from a battery used as a power source for a load. A malfunction determination circuit determines whether the FET for power-source output control is operating normally or not, by monitoring output voltage of the FET for malfunction check. Further, the malfunction determination circuit identifies malfunction of the FET for power-source output control due to short-circuiting during actual use.

REFERENCES:
patent: 4931778 (1990-06-01), Guajardo
patent: 8-308143 (1996-11-01), None

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