Cathode current control system

Cathode heating apparatus for an electronic power tube

Charged particle generating apparatus

Charged particle generation with a resonant electrical circuit

Circuit arrangement for electrode pre-heating of a fluorescent l

Circuit arrangement for increasing the luminous flux in fluoresc

Circuit arrangement for increasing the luminuous flux in fluores

Circuit arrangement for the operation of a fluorescent lamp

Circuit for controlling current flow from an A.C. source to a lo

Circuit for controlling power supplied to a cathode heater of a

Circuit for driving at least one gas discharge lamp

Circuit for operating a fluorescent lamp

Circuit for powering fluorescent lamps

Circuit for starting and operating fluorescent lamps

Circuit for transistor ballasts for the gentle ignition of fluor

Circuit, having multiple series resonant paths, for lighting a b

Circuits for operating electric discharge lamps

Circuits for operating electric discharge lamps

Compact igniter for discharge lamps

Compact igniter for discharge lamps