High voltage power supply fault isolation system
High-efficiency and light-adjustable lighting means of...
High-efficiency fluorescent lamp operating circuit
High-frequency operating circuit for a fluorescent lamp
High-frequency power circuit for gas discharge lamps
High-voltage supply for power electron-beam guns
Hybrid ballast for multiple discharge lamps
Hybrid luminosity control system for a fluorescent lamp
Ignition control circuit for gas discharge lamps
Illumination system and method and means for operating it
Indicator device with vacuum fluorescence elements
Indirectly heated electrode for gas discharge tube, gas...
Indirectly heated electrode for gas discharge tube, gas...
Indirectly heated electrode for gas discharge tube, gas...
Indirectly heated Wehnelt cathode
Inductive stabilization ballast for a discharge lamp
Infrared carbon nanotube detector
Instant lighting type fluorescent lamp lighting circuit
Insulation detection power supply and electronic ballast
Inverter-type microwave oven power supply