High precision luminance control for PWM-driven lamp

High-frequency operating circuit for a low-pressure discharge la

High-power electronic ballast for fluorescent lamp

High-power factor circuit for energizing gas discharge lamps

Inverter circuit capable of adjusting power factor

Lamp arrangement employing a resonant circuit formed from an aut

Lamp ballast system characterized by a power factor correction o

Lamp driver

Lamp driver

Lamp driver circuit with power factor correction circuit...

Lamp driving device having impedance component detecting...

Lead-type ballast apparatus with improved power factor for opera

LED dimming control technique for increasing the maximum PWM...

LED dimming control technique for increasing the maximum PWM...

LED power source and DC-DC converter

Light emitting apparatus with current limiting

Lighting control system with variable arc control including...

Lighting controller for lighting device for vehicle

Lighting controller for lighting device for vehicle

Lighting controlling device of vehicle lighting equipment