Electricity: electrical systems and devices – Safety and protection of systems and devices – With specific voltage responsive fault sensor
Patent
1982-08-30
1984-07-03
Moose, Jr., Harry E.
Electricity: electrical systems and devices
Safety and protection of systems and devices
With specific voltage responsive fault sensor
307 10R, H02H 320
Patent
active
044582862
ABSTRACT:
An electronic device for use in an automobile includes first and second power transistors connected in series between two power supply terminals, a first detector producing a first detection signal when the voltage difference between the two power supply terminals is larger than a first predetermined value, and a second detector producing a second detection signal when the voltage difference between the two power supply terminals is larger than a second predetermined value which is larger than the first value, the first power transistor being driven into cut-off in response to the first detection signal and a control current to be applied to the second power transistor being bypassed to one of the power supply terminals to keep the second power transistor conductive.
REFERENCES:
patent: 4005342 (1977-01-01), Davis
patent: 4042889 (1977-08-01), Baker
patent: 4152668 (1979-05-01), Kusumi
Moose Jr. Harry E.
Nippon Electric Co. Ltd.
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