The room temperature resistance of the tungsten filament in an ordinary incandescent light bulb is about 1/15th of the hot resistance exhibited during the normal operation at 117 VAC. Therefore, when you throw the switch to turn on the light bulb there is a huge surge of current in excess of the steady-state operating current until the filament heats up. This can cause the light bulb to "blow out." So you need an inductor to not allow current change too suddenly and a capacitor to prevent arcing. Design an LC circuit to protect the tungsten filament of an ordinary 75-Watt incandescent light bulb from over the current-transients greater than 50% of the normal operating current at the moment of turn-on! So can anyone help or give me a head start how to make this circuit!