In Search of a Low-Cost Temperature Sensor: Part 2

摘要

Try linearizing your thermistor's output with a Wheatstone bridge. Last month we explored the possibility of using voltage drop across a silicon small-signal diode as a temperature sensor. Although this property varies vs. temperature in a consistent manner, it has two significant drawbacks: unit-to-unit variation and a very small output signal. Now let's consider another contender for the crown of cheap temperature sensor - the thermistor.