Electricity: electrical systems and devices – Safety and protection of systems and devices – With specific current responsive fault sensor
Reexamination Certificate
2007-09-04
2007-09-04
Sherry, Michael (Department: 2836)
Electricity: electrical systems and devices
Safety and protection of systems and devices
With specific current responsive fault sensor
Reexamination Certificate
active
11043009
ABSTRACT:
A protection circuit detects short circuit and/or current overload conditions based on one of a current level and a current change rate di/dt of a current through a load. A detection device uses an inductor to detect current change rate and a resistor to detect current level, and generates a first voltage signal based on the voltages of the inductor and the resistor. A comparator generates a second voltage signal based on the voltage signal and a reference voltage signal. A switching circuit allows or interrupts current through the load based in part on the second voltage.
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Benenson Boris
Sherry Michael
Yazaki North America, Inc.
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