Unplug the fixture or turn off the power at the main panel. Remove the diffuser (cover), then carefully remove the ...
The white paper covers a revision to the way ballast efficiency factor (BEF) is calculated. The National Electrical Manufacturers Association (NEMA), Rosslyn, VA, has released a white paper that ...
With the rapid development of high brightness LEDs, SSL (Solid State Lighting) is no longer a niche market. In commercial buildings and department stores LED fixtures are chosen over fluorescents ...
A new standard contains energy-efficiency requirements for evaluating electronic ballasts designed for use with 4-ft, 32-W T8 fluorescent lamps. The National Electrical Manufacturers Association (NEMA ...
Electronic ballasts for fluorescent lighting deliver high efficiency and long lamp lifetimes. A new and simplified control circuit demonstrates complete control of the ballast, including all necessary ...
In part 1 we discussed rectifying the ballast AC current to DC and we showed an open load protection circuit. Direct replacement of fluorescent tubes with LED assemblies can lead to uneven lighting.