Temperature sensing systems and methods
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United States of America Patent
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-
Apr 17, 2001
Grant Date -
N/A
app pub date -
May 26, 1998
filing date -
May 15, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A temperature-controlled counter/clock arrangement is provided where th rate or frequency of the counting is temperature dependent. This allows for a measuring of thermal accumulation and/or history. The temperature sensing is based upon the use of the varying current that will flow through a toward biased semiconductor diode. In one embodiment a constant voltage source is used so that the current variation will follow Arrhenius's law.
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