Automatic Fan Speed Controller is a technology which is based on temperature sensing IC (eg LM35), AVR microcontroller (eg. ATMEGA8) and some other important component like bd139, resistors for power switching. As everything is becoming automatic and more easy to use, automatic fan speed controller is designed to control speed of motors etc… In automatic fan speed controller system, we are using LM35 IC to sense ambient temperature and this analog output from LM35 is converted to digital data using AVR A/D converter… after processing this data, corresponding output is used to control speed of motors etc…

APPLICATIONS

1. In residential houses.
2. In Offices.
3. In industries temperature monitoring system.
4. In automobiles AC system
5. In shops and malls.