The fan is AC single phase 220v, 60W exhaust type. Air flow modes are to simulate different winds like breeze, sea breeze etc.
After discussing here, I tried pwm using TIP 102 in a 12v brush type dc motor running a table fan. Vcc given to motor and the other wire of motor to TIP 102's collector.
The main requirement is the silent operation of the fan as done through fixed regulator. MCU controls the TIP 102 to generate different speed in this setup. In the AC fan another suitable one ST13005A is thought to be used. Pls say your suggestion.