This is an interesting project circuit which automatically switches the fan when it detects the temperature inside the device greater than its threshold value. We know that electronic devices produce ...

I made this project because I wanted a way to automatically control the speed of a DC fan according to the temperature read by a LM35 sensor. I had a few problems with the PWM part mainly because the ...

How to build a proportional controller that starts a cooling fan when circuit temperature passes a threshold, speeds up the fan as the temperature rises, and slows down and stops the fan when the ...