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Convert voltage to temperature formula12/4/2023 ![]() You turn it into a voltage by making it part of (usually) a voltage divider. It's a variable resistor - It changes resistance as it changes temperature. The thermistor doesn't output a "voltage". I can't find anything in the datasheet that would help me do this. When I said "not clear" I meant that looking at this datasheet, it is not clear how to work out a temperature from the voltage across this component. These are for the first and last component found on Farnell mentioned above. In my application I am going to use an ADC to measure the voltage across the thermistor and then convert it into a temperature value, but the actual method to use the thermistor in the circuit and to convert the measured voltage into a temperature value is not clear. I believe that there is a nonlinear relationship between the resistance of the thermistor and thus the voltage across it, and the temperaure of the thermistor. Thus, I am not sure how accurate that method is. If this is the case, then the resistance of the resistor (that is dividing the voltage) besides the thermistor will also change with temperature. I think we should use a voltage divider with the thermistor. ![]() This property can be used to measure the temperature, but it is not clear how to go from the voltage across a thermistor to an actual temperature. I understand the basic idea that in a thermistor, the resistance changes with temperature. They all have very different appearance but are all 2 port devices. Here is a list of thermistors I have found on Farnell:
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