modified 5 years ago

Substractor amplifier for thermistor

00:40:19

Here is an amplifying circuit for a NTC sensor to get a better resolution & fidelity for a microcontroller.

The thermistor is shown as a potentiometer in the circuit like the real 44014RC. It can be any thermistor as long as the resistance is not too small for the source max current(Rmin=V/Imax). If it is the case, better make this circuit: http://everycircuit.com/circuit/5178204198010880

The substractor amplifier values are for a thermistor of Rmax less or equal than 1 MegaOhms. If the thermistor gives larger values change the substractor resistances to bigger ones.

Visit the github for more details and a code: github.com/alexandergmzx/accurate_thermistor

published 6 years ago

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