Thermal measuring and testing – Temperature measurement – By electrical or magnetic heat sensor
Reexamination Certificate
2008-04-01
2008-04-01
Verbitsky, Gail (Department: 2855)
Thermal measuring and testing
Temperature measurement
By electrical or magnetic heat sensor
C702S130000, C702S133000
Reexamination Certificate
active
07350974
ABSTRACT:
A temperature detection circuit according to the present invention includes a potential generating part and a temperature detection part. The potential generating part generates a potential according to an environmental temperature, and the temperature detection part detects a temperature based on a detection potential generated in the potential generated part. The temperature detection part is a resistive load type inverter circuit that outputs a detection signal when the generated potential reaches a threshold voltage. The potential generating part applies the detection potential to the inverter circuit through a temperature sensor including cascaded diodes and an NchMOSFET. The threshold voltage of the inverter circuit is determined based on the NchMOSFET in the inverter circuit, and the NchMOSFET is a MOSFET having the same characteristic as the NchMOSFET of the potential generating part.
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Mikuni Takeshi
Tamagawa Akio
NEC Electronics Corporation
Verbitsky Gail
Young & Thompson
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