Stopper protection circuit of electronic ballast for...

Switchable precision current source

Switching arrangement for increasing the white life of a high pr

Switching LED driver

Switching LED driver with temperature compensation to...

Switchmode AC power controller

Symmetry control circuit and method

Symmetry regulated high frequency ballast

System and method for controlling a matrix of light emitting...

System and method for current and/or temperature control of...

System and method for open lamp protection

System and method for open lamp protection

System and method for providing adjustable ballast factor

System and method for reducing flicker of compact gas...

System for adjusting a light source by sensing ambient...

System for controlling the power of a high-voltage electron beam

System for driving a cold-cathode fluorescent lamp connected...

System for preventing oscillations in a fluorescent lamp ballast

System for providing a constant current to a fluorescent tube

System for stabilizing cathode ray tube operation