Electrical transmission or interconnection systems – Switching systems – Condition responsive
Patent
1998-02-11
1999-09-21
Gaffin, Jeffrey
Electrical transmission or interconnection systems
Switching systems
Condition responsive
307130, 307126, H01H 3500
Patent
active
059557931
ABSTRACT:
A high-sensitivity diode temperature sensor includes a reverse-biased diode, such as a Schottky diode, coupled to an adjustable constant current source for biasing the diode into a reverse operating region. The constant current source biases the diode at a particular reverse leakage current that corresponds to a temperature window over which the reverse voltage across the diode exhibits a linear response of several hundred mV/C. The change in reverse voltage can be used as a signal to switch power to an attached electrical load. Also disclosed is a dual-switchpoint temperature controller that incorporates the high-sensitivity diode temperature sensor with a feedback control circuit that enables the controller to switch power to a load at two adjustable setpoints using the single temperature sensor.
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Eder Philip B.
Khadkikar Prasad S.
Tennant James A.
Gaffin Jeffrey
Therm-O-Disc Incorporated
Zura Peter
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