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Fluorescent lamp with an electronic ballast Electronic ballast for fluorescent lamp, 2×58 W Electronic ballast basic schematic Electronic ballasts and different compact fluorescent lamps Electronic ballasts employ transistors to change the supply frequency into high- frequency AC while regulating the current flow in the lamp.
Electronic ballast of a compact fluorescent lamp. Electronic ballasts usually supply power to the lamp at a frequency of 20,000 Hz or higher, rather than the mains frequency of 50 – 60 Hz; this substantially eliminates the stroboscopic effect of flicker, a product of the line frequency associated with fluorescent lighting (see photosensitive ...
Replacement of magnetic ballasts with electronic ballasts has removed most of the flickering and slow starting traditionally associated with fluorescent lighting, and has allowed the development of smaller lamps directly interchangeable with more sizes of incandescent light bulb. Electronic ballasts contain a small circuit board with a bridge ...
Image:Fluorescente.png, Image:TLBuis.PNG, Image:Fluorescent lamp classic power circuit.jpg SVG Version of the Classic power circuit for a fluorescent light lamp A: Fluorescent Tube B: Power (+220 Volts) C: Starter D: Switch (Bi-metallic thermostat) E: Capacitor F: Filaments G: Ballast
Cross section of a typical fluorescent lamp with and without a reflector. Some lamps have an internal opaque reflector. Coverage of the reflector ranges from 120° to 310° of the lamp's circumference. Reflector lamps are used when light is only desired to be emitted in a single direction, or when an application requires the maximum amount of ...
T5 retrofit conversion can maintain existing lighting levels with the higher efficiency of the T5 lamp. However, with kits that operates the lamp on the existing magnetic ballast, the efficiency drops and the lamp life is considerably shortened, as T5 lamps aren't designed to be operated on mains frequency but only on high frequency.