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Thermistors What is a thermistor? A thermistor is a temperature-sensing element composed of sintered semiconductor material which exhibits a large change in resistance proportional to a small change in temperature. Thermistors usually have negative temperature coefficients which means...

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ZERO-POWER RESISTANCE The zero-power resistance is the dc resistance value of a thermistor measured at a specified temperature with power dissipated by the thermistor low enough that any further decrease in power will result in not more than 0.1% (or one tenth of the specified measurement tolerance...

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Current-time characteristic: The current-time characteristic is the relationship at a specified ambient temperature between the current through a thermistor and time, upon the application or interruption of voltage to it. Dissipation constant (D.C. or delta ): The dissipation constant is the ratio...

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How to interface a thermistor with a voltage comparator...

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Thermistor can be classified into 2 category, PTC thermistor and NTC thermistor, according to its resistance-temperature characteristics. PTC, abbreviation of Positive Temperature Coefficient. NTC, abbreviation of Negative Temperature Coefficient. PTC thermistor is classified into 2 type...

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Temperature measurement can be accomplished with a simple Wheatstone bridge as illustrated, or in any configuration where the voltage across or current through the thermistor can be measured....

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This application note describes a temperature sensor using a PICmicro (R) microcontroller. This temperature sensor is unique because it can work through non-ferromagnetic walls. Interfacing to a thermistor is normally a very straightforward task. Interfacing to a thermistor on the other side...

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APPLICATION Temperature measurement The NTC thermistor offers a practical, low-cost solution to most temperature measurement applications. One of the circuits suitable for temperature measurement is a Wheatstone bridge with an NTC thermistor used as one bridge leg. Temperature control The NTC...

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This application note shows two designs that use a precise, negative temperature coefficient (NTC) thermistor for temperature measurement. The thermistor is placed in a resistive divider to linearize the temperature-to-voltage conversion. The voltage is processed in the analog domain by the MCP6SX2...

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This application note shows two circuits that use a precise, negative temperature coefficient (NTC) thermistor for temperature measurement. The thermistor is placed in a resistive divider to linearize the voltage response to temperature. This voltage is then processed in the analog domain...

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