Electric incandescent lamp for series arrangement having an elec
Electric-discharge lamp control apparatus and...
Electrical compensation and fault tolerant structure for...
Electrical power control system for lighting systems
Electronic ballast having an oscillator shutdown circuit for sin
Electronic ballast with controlled operating voltage
Electronic ballast with safety feature
Electronic ballast with shock protection feature
Electronic circuit to initiate and sustain current...
Energy conserving instant-start series-sequence fluorescent lamp