Ballast circuit for accurately regulating HID lamp wattage
Control circuit for an A.C. discharge lamp
Device for operating a gas-discharge lamp
Dimmer switch for a fluorescent lamp
Energy efficient reactance ballast with electronic start circuit
Fluorescent lamp ballast having a resonant output stage using a
Fluorescent lamp starter circuit
Lighting equipment
Portable fluorescent tube assembly having low voltage convenienc
Power supply for a gas discharge lamp
Pulse circuit for gaseous discharge lamps
Surrounding a portion of a lamp with light regulation apparatus
Variable inductance ballast apparatus for HID lamp