Resonant voltage-multiplication, current-regulating and ignition
Safety protector for non-isolated ballasts
Saturable reactor device for operating a discharge lamp
Self-commissioning daylight switching system
Series-resonant electronic ballast circuit
Series-resonant electronic ballast circuit
Switching device
Switching device
Two-wire electronic dimming ballast for fluorescent lamps
Unsaturating transformer, an electronic ballast using the...
Variable structure circuit topology for HID lamp electronic...