NTC Calculator



drawing

Equations

Characterise the NTC thermistor using the Beta method.

$$r_{\infty} = R_{25} \cdot exp \left(\frac{-B}{T_{25}}\right)$$

Calculate the thermistor resistance from voltage and then use this to calculate temperature

$$ R = \frac{V_{out} \cdot R_2}{V_{cc} - V_{out}} $$

$$ T = \frac{B}{\ln(R/r_{\infty})}$$

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