Thermal 'circuits' are very similar to electrical circuits. You can use a
lot of the same analysis tools (like ohms law, kirchoffs law, etc) by just
changing the terminology:

Masses(things that store heat) == capacitors

Connections between masses == resistors

Temperatures == voltages

Heat flows == currents

So, for example if you know the thermal mass of the thermistor (its
pseudo-capacitance) and the thermal resistance of its connection to the item
being measured (the pseudo-resistance) you can compute the corresponding
time constant RC (just like in an electrical circuit).

Bob Ammerman
RAm Systems
(contract development of high performance, high function, low-level
software)

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