Low voltage differential (LVD) capsulates no conventional filament and electrode and is designed with HF ballast with dedicated IC which emits HF electric wave energy.With electromagnetic induction, this energy is coupled in the discharge tube filled with inert gases and special amalgam with magnet core of the winding set on the outside of the tube. Owing to high frequency of 230KHz, the electrons move in the lamp tube to ionize and excite the amalgam molecules, producing 253.7nm UV electrons, which beat on the bulb inner wall pained with rare-earth fluorescent powder to generate visible light radiation.