Alternating cathode florescent lamp dimmer

Apparatus and method for controlling the filament voltage in...

Apparatus and method for starting and controlling a fluorescent

Apparatus and method for supplying a regulated current to a...

Apparatus and method of operation for an electron beam source

Apparatus and methods for making capacitive measurements of...

Apparatus and methods for making capacitive measurements of...

Apparatus and methods for making capacitive measurements of...

Apparatus and methods for making spectroscopic measurements...

Apparatus for igniting a discharge lamp including circuitry for

Apparatus for operating a fluorescent lamp of an image forming a

Apparatus for operating a gaseous discharge lamp

Apparatus for operating gaseous discharge lamps on direct curren

Arrangement for the regulation of the electron beam power of...

Arrangement including a gas and/or vapor discharge lamp

Arrangement intended for the ignition and alternating current su

Ballast circuit for a gas discharge lamp having a cathode pre-he

Ballast circuit for eliminating flicker in gaseous discharge lam

Ballast circuit for starting fluorescent lamps

Ballast device for uv radiator and also method and device...