Embedded thermistor for on-board thermal monitoring of electrical components
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United States of America Patent
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Apr 22, 1997
Issued Date -
N/A
app pub date -
Jan 18, 1996
filing date -
Feb 23, 1994
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A system and method for monitoring the temperature of a heat-producing electronic component located on a circuit board and a method of manufacturing therefor. The system includes: (1) an electrically-conductive trace of predetermined dimensions formed integrally with the circuit board, the trace having a temperature-dependent electrical property, a temperature of the electronic component affecting the electrical property and (2) an overtemperature detection circuit coupled to the trace for measuring the electrical property. The detection circuit provides, in response thereto, an overtemperature signal to thereby indicate that the temperature of the electronic component has exceeded a predetermined level. Preferably, the system is used to protect a microprocessor in a personal computer ('PC') from overheating.
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