Thermistor Diagram. If the thermistor fails the refrigerator won t stay at the temperature you set resulting in items either freezing or spoiling because it s too cold or too warm. The metal tube sensing element and leads together become a thermistor used to measure temperature.
The metal tube sensing element and leads together become a thermistor used to measure temperature. The leads of the thermistor are connected to a wheat stone bridge as shown in the diagram. They are widely used as a way to measure temperature as a thermistor thermometer in many different liquid and ambient air environments.
How to build simple thermistor circuits.
The b value is a fixed material constant that describes the shape of the slope of the resistive curve over temperature. The circuit diagram of thermistor uses the rectangular block which has a diagonal line on it. The circuit symbol for a thermistor is shown below. The circuit compromises of a voltage divider circuit and output on and off switching circuit.
