CFLs produce light differently than incandescent bulbs. In an incandescent, electric current runs through a wire filament and heats the filament until it starts to glow. In a CFL, an electric current is driven through a tube containing argon and a small amount of mercury vapor. This generates invisible ultraviolet light that excites a fluorescent coating (called phosphor) on the inside of the tube, which then emits visible light. CFLs need a little more energy when they are first turned on, but once the electricity starts moving, use about 75 percent less energy than incandescent bulbs. A CFLs ballast helps "kick start" the CFL and then regulates the current once the electricity starts flowing.
Older CFLs used large and heavy magnetic ballasts that caused a buzzing noise in some bulbs. Most CFLs today and all ENERGY STAR qualified CFLs use electronic ballasts, which do not buzz or hum. Advantage Development Co. Is an award winning custom green home builder and Energy Star partner in Asheville NC that understands how important energy conservation is in this day and age of global warming. Let us assist you in properly designing that new dream home to maximize efficiency and reduce total home operating costs. Call us at 828-215-9064 or visit us at http://www.advdevco.com/ to learn why we are the better builder in and around Asheville NC.