Frequency sensing control device
Full power light control
Fully automatic energy efficient lighting control and method of
Fully automatic energy efficient lighting control and method...
Gas discharge lamp ballast circuit with automatically calibrated
Gas discharge lamp system with automatic shutoff means
Gas discharge tube and means for maintaining an invisible gas di
Gas mixture for diffuse-discharge switch
High efficiency backlighting system for rear illumination of ele
High frequency fluorescent lamp exciter
High intensity discharge lamp color
High pressure discharge lamp dimming circuit utilizing variable
High-frequency power supply for incandescent lamp
Ignition circuit for extinguishing tubes in electronic flash equ
Illumination apparatus
Illumination control
Illumination control apparatus
Illumination control apparatus for controlling illumination by d
Illumination control circuit using a photoreceptor built-in a re
Illumination control system for light emitters