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What is BJT Temperature Measurement Circuit about?

This document describes a BJT-based temperature measurement circuit using a silicon diode sensor. The circuit aims to obtain the voltage across the diode, which varies by -2mV/°C, and amplify it using a BJT differential amplifier for measurement. Experimental results showed a voltage variation across the diode of -2mV/°C as expected. However, problems arose in that the circuit could not sense variations lower than 2mV due to noise, and temperature could not be controlled precisely during testing.

Author

Anshul Goyal

Language

EN