Daylight control system device and method
Decorative lamp
Device and method for controlling LCD backlight
Device for preventing a lamp from igniting a cover such as a cur
Device for regulating luminous flux of battery powered headlamp
Device permitting of economizing electric lighting energy
Dielectric surface electrical discharge device
Differential illumination sensitive switching circuit
Digital light responsive switching circuit
Digital room light controller
Dimmable ballast control circuit
Dimmable ballast control circuit
Dimmable flex arm lamp
Dimmer control circuit
Dimmer control system having remote infrared transmitters
Discharge lamp operating circuit
Display apparatus and control method thereof
Display devices with ambient light sensing
Drive circuit of light emitting element
Driving arrangement for a varying color light emitting element