Working principle:
The basic working principle of temperature controlled DC fan is based on the working of the Thermistor.
Thermistor is a device or component whose resistance changes as its temperature
changes.
In temperature controlled DC fan we have used a NTC type Thermistor.
It is called NTC because its resistance decreases or goes down when the temperature increases or goes high and vice verse. Similarly there is one more Thermistor called PTC Thermistor whose resistance increases when
temperature increases and vice verse. Current always flows in least resistance path to understand this in a better way consider an example of water and tap. Water flows at a high speed when the tap is opened full and when it is opened half then speed of water flowing decreases. Exactly the same thing goes with NTC Thermistor. When temperature is high current flowing through DC fan will be high and when temperature is low less amount of current flows through the DC fan. This is the due to the property/principle of NTC Thermistor stated above.
And this is how this stuff works. Hope you people enjoyed making this
mini project. Well keep up the spirit for learning and try some other
mini projects listed here in this blog. To know more about op-amps
or if you have any question or doubt please leave a comment below. Have a
nice day !
If you want to make this project for your school science exhibition or as a hobby, simply call to the number given below or mail me to my email id and you will get this entire project stuff or kit delivered to your home (only in Bangalore) with an extra deliver charge of 25 Rs. Good Luck :)
If you want to make this project for your school science exhibition or as a hobby, simply call to the number given below or mail me to my email id and you will get this entire project stuff or kit delivered to your home (only in Bangalore) with an extra deliver charge of 25 Rs. Good Luck :)
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