CONNECT A 12 VOLT 2.6 WATT PC COOLING TO 220 VOLT AC AT 50 Hz?
could someone out here help me connect a 12 VOLT 2.6 WATT PC COOLING FAN to 220 VOLT AC 50 Hz. I thought of using a 15 VOLT 500mA transformer to step down voltage and using a 7812 at output of transformer to stabilize voltage...but how to regulate the current???...please don't advice using a resistor parallel to the fan...to be pin point ... HOW TO REGULATE CURRENT AT THE O/P OF 7812??? WHAT SHOULD BE THE I/P CAPACITANCE VALUE w.r.t THE 7812 CKT???
a circuit diagram would be appreciated..