switching on/off of exhaust fan with controller

[kaus9952083382]

how to do switching on/off of ac exhaust fan (capacitor start capacitor run motor).... rating.... 40 w .... i=0.18 amps....... single phase 220v....................... actually i already did switching of a bulb using triac and 8051........ but i m not sure about this........

 

[milind.a.kulkarni]

try the same circuit ....one some extra precaution that you need to take case here is fan is inductive load so current lags the voltage where as in case of bulb it is resistive load thus voltage and current are in phase....so my recommendation is fine tune delay while firing the gate pulse ....also use free wheeling diode across the triac ...

Good Luck