This paper proposes high frequency electronic ballast for HID lamps with a hot restarting circuit. The proposed circuit is composed of voltage source half bridge inverter, immittance conversion circuit, parallel LC resonant circuit, HID lamp, and igniter. The voltage source is converted into current source and vice versa by the effect of immittance conversion circuit. The ballast supplies not only high cold start voltage to the lamp, but also stable current during lamp operation. The igniter is also capable of the supplying the high voltages required to discharge a hot lamp.