Automatic fan speed regulator automatically regulates the speed of the fan according to the temperature inside the room. Due to sudden changes in atmosphere because of pollution, we feel hot and after some time we feel cold. And we have to regulate the speed of fan. Hence to solve this problem we have described this simple circuit.
Fig. 1: Prototype of Automatic Fan Speed Regulator Circuit on Breadboard
This circuit is based on two IC LM35 and LM3914 with few more components.