Area lighting system for near uniform illumination of a square horizontal surface area without side glare and including a horizontally-oriented arc tube lamp
US5424614A
Modified half-bridge parallel-loaded series resonant converter topology for electronic ballast
US5410462A
Modular recessed compact fluorescent lamp fixture
US5402039A
Non-automatic resetting thermal-protected ballast
US5334912A
Ground fault detector and associated logic for an electronic ballast
US5331253A
Electronic ballast for gaseous discharge lamp operation
