Electricity: electrical systems and devices – Safety and protection of systems and devices – Voltage regulator protective circuits
Patent
1992-03-19
1994-04-12
Deboer, Todd
Electricity: electrical systems and devices
Safety and protection of systems and devices
Voltage regulator protective circuits
361 56, H02H 710
Patent
active
053031105
ABSTRACT:
An insulated-gate controlled semiconductor device including a main circuit that is controlled by an insulated gate having a gate resistor, an overload detector having the insulated gate for use in common with the main circuit, the overload detector being of the same construction as that of the main circuit, a current detector for detecting current passing through the overload detector, and a field effect transistor having a gate which accedes to the voltage drop of the current detector the main circuit being protected by lowering the voltage applied to the insulated gate through gate resistance and on-resistance of the field effect transistor while the field effect transistor is held on.
REFERENCES:
patent: 4719531 (1988-01-01), Okado et al.
patent: 4893158 (1990-01-01), Mihara et al.
patent: 4990978 (1991-02-01), Kondoh
DeBoer Todd
Fuji Electric & Co., Ltd.
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