Latching protection circuit
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United States of America Patent
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-
Feb 19, 2002
Issued Date -
N/A
app pub date -
Apr 7, 2000
filing date -
Sep 18, 1998
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An overcurrent protection system gives rapid response to relatively small overcurrents has a sensor element and an interruption element in series between a power source and a load. The sensor element is functionally linked to the circuit interruption element via a control element. When current exceeds a predetermined amount, the sensor element transfers heat to the control element which causes the circuit interruption element to change from a conducting state to non-conducting fault state. A latching arrangement causes the protection system to remain in the non-conducting fault state until reset. The control element may include a PTC device or a bimetal switch.
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