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Conference papers
DESIGN OF A POWER CONTROL UNIT DEDICATED TO GAS SENSORS BASED ON MICROHOTPLATE PLATFORM
Abstract : This paper deals with time drift problems of polysilicon resistors used as heater in gas sensors. Actually, this polysilicon heater is applied by a constant voltage, so its time drift about 20% of nominal value implies an equivalent variation of operating temperature. Then, this study presents a new design of power-control unit dedicated to force the same power on the heater resistor independently of its value and its time drift. Elaborated with two current mirrors, a multiplier and a proportional regulation system, this non optimized prototype allows good temperature stabilization with an error which doesn't exceed 3°C in the worst case.
Cited literature [4 references]
https://hal.laas.fr/hal-02160599
Contributor : Philippe Menini <>
Submitted on : Wednesday, June 19, 2019 - 6:51:41 PM
Last modification on : Friday, January 10, 2020 - 9:10:15 PM
Contributor : Philippe Menini <>
Submitted on : Wednesday, June 19, 2019 - 6:51:41 PM
Last modification on : Friday, January 10, 2020 - 9:10:15 PM
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mixdes_final.pdf
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