An electric circuit for use with an AC power source includes a diode electrically connected to a line input from the AC power source, a transistor having a gate, a drain, and a source, wherein the drain is electrically connected to the diode, a zener diode electrically connected between the gate and the source of the transistor, a resistor electrically connected between the drain of the transistor and a neutral input from the AC power source, and a capacitor electrically connected in parallel with the resistor.