In This video we Will make a simple Circuit to automatically switch ON and control the speed of a fan according to the temperature.

Working: This project uses IC UA741 as a sensor for detecting accurate centigrade temperature. The output voltage of this sensor is linearly proportional to the Celsius (Centigrade) temperature. This sensor uses the fact that, as temperature increases, the voltage across a diode increases at a known rate.

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Part List of Automatic Fan Controller :
1) UA741 IC
2) NPN Transistor BC140
3) 4.7k NTC Thermistor
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4)4.7k and 47 ohm resistor
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5)9V battery or any DC Source
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6) 100K or 500k Potentiometer
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7) 1N4007 DIODE
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8) Breadboard or PCB
PCB:- [ Ссылка ]
Breadboard :- [ Ссылка ]

Hope you like it.
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#temperaturecontrolledfan #automaticfan #temperatuefan

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