Thermostat with three-wire serial interface smart temperature sensor DS1620 configuration control circuit

DS1620 with a microprocessor to monitor temperature, by opening or closing the fan can be changed thermal conditions of the chip to achieve temperature control circuit as shown

in FIG. Which is characterized TCOM signal through 2N7000 type MOSFET, to control the fan, the chip surface temperature t Open the fan when tH, and maintained until t

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