Sensor Project
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| Submitted: Wed Aug 27 2003
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Sensor Project Introduction In this project I am going to test and evaluate a thermistor. I am going to test the thermistor on how the resistance of this component changes under different temperatures. Thermistors are thermally sensitive resistors and have, according to type, a negative (NTC), or positive (PTC) resistance/temperature coefficient. A thermistor is a type of resistor whose resistance changes significantly when its temperature changes. A negative temperature coefficient (ntc) thermistor has a resistance that decreases with increase of temperature. This is the most common type. This is the type of resistor that I shall be evaluating and will be using in my experiment. A positive temperature coefficient (ptc) thermistor has a resistance that increases with increase of temperature. The resistance of a semiconductor generally decreases with increase of temperature. Semiconductors are therefore used to manufacture ntc thermistors. When the temperature of a semiconductor is increased, the number of charge carriers...

