Thermistors
There are a broad array of applications for which precise temperature measurement and control is required—thermistors are used in all of them. And when it's a resistive device, thermistors are deployed. In terms of temperature coefficient, there are two predominant types of thermistors: NTC (negative temperature coefficient) and PTC (positive temperature coefficient). Devices that serve to gauge temperature are predominantly NTC thermistors, as they provide the most accurate means of sensing an increase in temperature. Conversely, PTC thermistors find good use in applications that require overcurrent protection and in self-regulating warming devices.
The main benefit of thermistors is their excellent sensitivity to minute temperature changes, which enables them, when so desired, to act as highly accurate and controlled temperature gauges. Among the types of thermistors, NTCs are generally favored for applications requiring a wide temperature span. They can work just fine at sub-zero levels and over decent intervals of hundred-plus-degree Fahrenheit changes. PTCs, on the other hand, are what you want when you’re looking to maintain a constant temperature.
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