Temperature compensation circuit with the thermistor

Published:2011/8/24 21:30:00 Author:Christina | Keyword: Temperature, compensation, thermistor | From:SeekIC

The temperature compensation circuit with the thermistor is as shown in the figure. It is designed as the temperature-compensation circuit of the infrared light-emitting diode VD1, the VD1 can be used as the photodetector of the modulated light, the maximum current is 50mA, the temperature range is 10-55℃. RT can be used as the thermistor with the negative temperature coefficient, and it is connected with the base of VT1 to reduce the self-heating effect of the thermistor. The RP2 and RP3 can be used to adjust the temperature compensation feature. VD2 is the receiver that can amplify the receiving signal through the TAA761.



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