The sensitivity of a diode thermometer depends on how much the voltage changes for a given temperature
Question:
(a) +0.2 mV/°C;
(b) +2.0 mV/°C;
(c) -0.2 mV/°C;
(d) -2.0 mV/°C.
The currentvoltage characteristics of a forwardbiased p-n junction diode depend strongly on temperature, as shown in the figure. As a result, diodes can be used as temperature sensors. In actual operation, the voltage is adjusted to keep the current through the diode constant at a specified value, such as 100 mA, and the temperature is determined from a measurement of the voltage at that current.
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Related Book For
University Physics with Modern Physics
ISBN: 978-0133977981
14th edition
Authors: Hugh D. Young, Roger A. Freedman
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