What is power-factor correction (PFC) good for? PFC avoids apparent power being drawn from the power grid. This apparent power becomes larger as the phase shift between current and voltage gets larger ...

Fluorescent lights aren't on the top of many people’s favorites list. Ever since they were introduced at the New York World’s Fair in 1939, they've been notorious for their cold, bluish light that is ...

November 13, 2007 ReLED Systems has introduced a solid state replacement for fluorescent tubes which allows existing light fixtures to be simply converted to Light Emitting Diodes (LEDs), offering ...

So far, three stations have undergone the switch including the Bergen, Carol, and Lafayette Street stations in Brooklyn. The MTA says riders can expect brighter stations which will in turn hopefully ...