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Posistor-Slide6

The graph on the left shows the output voltage curves (Vout), for the circuit on the right with various PRF parts used. The graph shows how the characteristic of Vout changes with temperature change. Vout for all of the parts rises sharply and a common sensing voltage is possible (1.06V in the graph). This means the detection temperature can be easily changed by replacing the thermistor and not having to change the control circuit ICs or transistors.

PTM Published on: 2011-11-02