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Temperature Monitoring Circuit of Transistor Temperature Sensor

Published:2011/7/10 19:15:00 Author:Michel | Keyword: Transistor Temperature Sensor, Temperature Monitoring Circuit | From:SeekIC

This figure is monitoring circuit of transistor temperature sensor temperature.In the circuit,VT1 is used as temperature snesor,it adopts the -2·2mV/℃ temperature coefficient of silicon transistors base-emitter voltage and the temperature range is -65一15O℃. A1 is comparator circuit and its output is U。and is connected with corresponding alarm system.R3 and R4 determine temperature setting value and the warner sounds when the present temperature exceeds setting value.

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