The
circuit is temperature control by fan, this circuit can control
temperature and it also indicates the temperature. All the above
functions are monitored and controlled by the 8 bit microcontroller
AT89S52. The system will get the temperature from the IC DS1820 and it
will control the speed according the values stored in the code.? The
System is fully controlled by the microcontroller AT89S52. Here is a schematic drawing:
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its cool