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Car Fan Thermostat

2017-01-16 16:17  
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The circuit is based on MC3334P ignition temperature sensor chip and the commercial (TS6178) principle, when the heat sink temperature rises, the sensor based on the extracted through QL, which is wired as a diode Q2 is low.

Thermostat Switch For Automotive Electric Fans Circuit 
 

The collector of Q2 becomes high, thereby triggering IC1, switch 7 feet high output, turn on the fan motor through the Q3.

 



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