Magnetic ballast for fluorescent lamps

Magnetron controller with transformer controlling the inrush...

Magnetron device

Magnetron energizing circuit

Magnetron mode detector

Magnetron operating circuit

Method and apparatus for a unidirectional switching, current...

Method and apparatus for control of fluorescent lamps

Method and apparatus for current regulation in a gas discharge l

Method and apparatus for driving a gas discharge lamp

Method and apparatus for increasing the cathode efficiency in a

Method and apparatus for lighting a discharge lamp

Method and apparatus for quickly heating a vacuum tube cathode

Method and apparatus for supplying power for a vacuum...

Method and arrangement for preventing cathode damage when switch

Method and arrangement for the operation of a gas discharge lamp

Method and circuit to operate a low-pressure discharge lamp, par

Method and circuit to start and operate high pressure discharge

Method and circuitry for igniting fluorescent lamps at a predete

Method and device for detecting the rectification effect that oc