Apparatus and method for switch state detection and controlling electrical power

Apparatus and method for switch state detection and controlling electrical power

Low power bypass circuit for LED open circuit and reverse polarity protection

Apparatus and method for switch state detection and controlling electrical power

Light emitting diodes driven by high intensity discharge ballast

Emergency lighting devices with LED strings

XENON LAMP ILLUMINATION APPARATUS

Method for controlling a lighting system, and lighting system

Control Apparatus for a Circuit Arrangement for Operating a Light Source, as well as a System Comprising a Circuit Arrangement and a Circuit Arrangement, as well as a Method for Operating a Light Source

Backlight unit for display device

LED-based secondary general illumination lighting color slaved to alternate general illumination lighting

AC delay angle control for energizing a lamp

Method for operating high-pressure lamps without hotstarting and luminaire having two high-pressure discharge lamps

ELECTRONIC BALLAST WITH LOW VOLTAGE OUTPUT

Auxiliary lighting circuit for a gaseous discharge lamp

Method for controlling dual lamp module

Standby lighting for lamp ballasts

Auxiliary lighting circuit for high intensity discharge system

Auxiliary quartz lamp lighting system for high intensity discharge lamp ballasts

System and method for applying power to high intensity discharge lamps

Blended light lamp

Auxilary lighting circuit for high intensity discharge system

Auxiliary quartz lamp lighting system for electronic high intensity discharge lamp ballasts

Vehicle headlamp

Apparatus and method for standby lighting

Standby lighting control for high intensity discharge lamp

Lamp driver system with improved redundancy

Method and apparatus for a unidirectional switching, current limited cutoff circuit for an electronic ballast

Apparatus for reducing warm-up time by auxiliary light source and method for the same