hi guys i have this easy task to complete, and this time i just need some advice to down the speed of a small 4 inches blower or fan, this is a 110 volt 2 speed fan and draws 0.44 Amps, i just need to step down that speed like say minus 30 volts, so i just tried with resistor in series for this task but nothing happens at all, so wich formula should i use to calculate the resistors or/and capacitors to achieve this task?, should be this in series or parallel?, thanks guys.