There are many circuits and measurement methods that can be used with a thermistor to determine the temperature. The potentiometer, more voltage that drops across it. A typical thermistor circuit provides a voltage (V Sense) that is applied to an ADC input; the ADC then converts this voltage to an LSB (least significant bit) digital value that is proportional to the input voltage. The simplest approach is to use a half-bridge circuit also known as … It now has a resistance below that of the fixed resistor. This supplies sufficient power for the chip to operate and sufficient power to turn on the LED. If the voltage at the inverting terminal exceeds this level, the output turns on. Then connect Analog 0 pin to the 'center' of the two. A thermistor is a specialized resistor which changes resistance value depending on the amount of heat which it is at the inverting terminal being greater than at the noninverting terminal, the output will be drawn to ground and the LED will turn on. TL082 or any other general purpose opamps can also be used. PTC thermistors are thermistors whose resistance increases when the temperature they are exposed to increases. 35.5040458984 36.7302664759. Some jumper wires 3. We will exploit this principle with a voltage comparator to build a circuit that can sense and react to these temperature changes. Nicky Cox 749 views. How to Test a Thermistor MEGA or Uno or your favorite flavor of Arduino 2. 0:25. powering on a device that needed higher power such as a 12V DC motor, for instance, we would need at least 12V of power. A thermistor is a specific type of resistor that uses sensors to help regulate cold and heat.