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[1] [3] To prevent this, fluorescent tubes are connected to the power line through a ballast. The ballast adds positive impedance (AC resistance) to the circuit to counteract the negative resistance of the tube, limiting the current. [1] Several American magnetic ballasts for fluorescent lamps. The top is a rapid start series autoregulator ...
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.
Changing to this type of lamp without taking the ballast out of operation (rather than simply bypassing it) results in an increased power factor for the fitting. This increase in power is a result of the separate coils used in an electric ballast, as opposed to the single coil in a magnetic ballast, because it allows the electricity to flow ...
The design was initiated by the U.S. EPA and the Lighting Research Center in 2004, in order to facilitate the deployment of compact fluorescent light bulbs with replaceable ballasts. [ 1 ] The GU24 fitting is compliant with a 2008 ruling by the California Energy Commission under Title 24 ( California Building Standards Code ) to require high ...
Some have tubes and ballasts permanently connected, while others are separate allowing you to change the tube without changing the ballast. There are also CFLs enclosed in a glass globe, which look similar to conventional incandescent light bulbs. CFLs fit most fixtures designed for incandescent lamps, although only some can be dimmed. [5]
The energy-saving T12 lamps are made to operate on ballasts designed for 40-watt F40T12 lamps, though some F40T12 ballasts are not be designed to operate these lamps, and can overheat if energy-saving lamps are used. Running an energy-saving T8 tube with a ballast for T12 will reduce lamp life and can increase energy consumption. [9]
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