INTERNALLY RESISTIVELY BALLASTED DISCHARGE LAMP CONTAINING BRIDGE RECTIFIER

摘要

A discharge lamp comprising an arc tube and an incandescible filament connected in series within an outer jacket. An integral four-diode bridge rectifier operates the lamp on rectified alternating current and the filament limits the current through the arc tube. The lamp operates reliably with a greater proportion of the line voltage applied across the arc tube than in conventional resistively ballasted lamps, resulting in higher efficiency. One or more diodes may be paralleled by a small capacitor to provide a voltage doubling effect to start the lamp.