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Why does the resistance of a thermistor change when you change its temperature?
Wiki User
∙ 9y ago
Thermistors are positive or negative temp coefficient.
As temperature changes, so does R, either up or down depending on type.
Wiki User
∙ 15y ago
The resistance of a thermistor changes when its temperature changes due to the inherent properties of the thermistor material. In a negative temperature coefficient (NTC) thermistor, the resistance decreases as the temperature increases, whereas in a positive temperature coefficient (PTC) thermistor, the resistance increases as the temperature rises. This change in resistance is caused by the variation in the number of charge carriers (electrons or holes) and their mobility within the material as temperature changes.
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How does a platinum resistance thermometer work?
They are slowly replacing the use of thermocouples in many industrial applications below 600 °C, due to higher accuracy and repeatability.Common RTD sensing elements constructed of platinum copper or nickel have a unique, and repeatable and predictable resistance versus temperature relationship (R vs T) and operating temperature range. The R vs T relationship is defined as the amount of resistance change of the sensor per degree of temperature change.
How does the graduated cylinder account for the volume change due to temperature changes?
They have excellent chemical high resistance. They also have better resistance to temperature changes.
Does air temperature affect air resistance?
There are two factors that influence air resistance with temperature. Air density decreases with temperature so that the force needed to push the air out of the way is decreased, thereby decreasing resistance. Conversely, air viscosity increases with temperature (unlike oil for example where viscosity decreases with temperature) so that the drag increases. Under normal conditions, the density change of air has the greatest effect and air resistance decreases at higher temperatures.
Is resistivity of a conductor temperature dependent?
A perfect insulator has infinite ohms of resistance.
Why resistance of alloys decreases with temperature?
I thought the resistance of a material, with few exceptions, increased with temperature. Anyone else want to chime in???
How could you change the resistance of the thermistor?
Change its temperature.
How is a thermistor used in a baby incubator?
A thermistor changes its resistance when the temperature changes. This means as the room temperature changes the current in the circuit containing the thermistor changes. This change in current is detected by the heater circuit, turning the heater on and off.
Is potentiometer and Thermistor are variable resistors. How please explain?
A: A potentiometer is a manual device to change the resistance A thermistor changes as a function of environment temperature
Is a NTC thermistor different from PTC thermistor?
Yes, NTC stands for Negative temperature coefficient. This means the resistance goes down as temperature goes up. A PTC has a positive temperature change. As temp goes up, the resistance will increase also.
Is the resistance of a thermistor measured in degrees celsius?
resistance is measured in 'ohms'. A thermistor basically tells u how temperature affects resistance in a circuit, generally the higher the temperature (degrees) the less resistance
What are the electrical characteristics of a thermistor?
Varies its resistance with regard to temperature.
What does a Thermistor do in a circuit?
A thermistor is a type of resistor specifically designed to have a predictable change in resistance depending on the temperature surrounding it. All resistors and, in fact the resistance of all components are succeptable to changes in temperature. The thermistor however, is specifically designed to exploit this in order to be able to measure temperature. They are commonly found in all sorts of temperature sensing circuits, from your digital thermostat in your house to your digital meat thermometer.
What are different measurement topology for temperature measurement or measurement of resistance of thermistor?
different measurement of temperature
What is a ntc thermistor?
A NTC thermistor is a temperature sensor that has a "negative temperature coefficient". That means as temperature goes up, the resistance of the device goes down over it's operating range.
How the temperature of a thermistor affect the current which is able to flow in the circuit?
According to the different coefficient of resistance change, thermistors are divided into two types: positive temperature coefficient thermistor (PTC), whose resistance value increases with increasing temperature, and negative temperature coefficient thermistor Resistance (NTC), whose resistance value decreases with increasing temperature. We're JYH HSU(JEC) Electronics Ltd (or Dongguan Zhixu Electronic Co., Ltd.), an electronic components manufacturer. You may google search "JYH HSU" to find our official website.
What is thermistorhow is it works?
A thermistor is a temperature sensitive resistor, there are two types: 1) If the temperature rise the resistance will go higher 2) If the temperature rise the resistance will go lower
What is the difference between the sensistor and thermistor?
Thermistor: Negative temperature coefficient Sensistor: Positive temperature coefficient.
