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Group 2 (Only for use in signalling lamps, cornering lamps, reversing lamps and rear registration plate lamps) Category Cap (Base) Filaments Nominal Power (Major/Minor where applicable) Comments Image C5W SV8.5 1 6 V, 12 V, 24 V: 5 W [5] ECE nominal luminous flux: 45 lm ± 20%; Old designation: C11, common name is "festoon" base H6W BAX9s 1 12 ...
A halogen lamp (also called tungsten halogen, quartz-halogen, and quartz iodine lamp) is an incandescent lamp consisting of a tungsten filament sealed in a compact transparent envelope that is filled with a mixture of an inert gas and a small amount of a halogen, such as iodine or bromine.
Under ECE regulations, H1 lamps are required to emit white or selective yellow light. [1] U.S. regulations require H1 lamps to emit white light. [2] Under both ECE and U.S. specifications, the allowable range of white light is quite large; some H1 lamps have a slight blue or yellow tint to the glass yet still produce light legally acceptable under the requirement for white light.
UN Regulation 87 stipulates that DRLs must emit white light with an intensity of at least 400 candela on axis and no more than 1200 candela in any direction. [40] In the US, daytime running lights may emit either amber or white light, and may produce up to 7,000 candela. This has provoked a large number of complaints about glare. [41] [42]
HID lamps give higher efficacy than halogen lamps. The highest-intensity halogen lamps, H9 and HIR1, produce 2100 to 2530 lumens from approximately 70 watts at 13.2 volts. A D2S HID bulb produces 3200 lumens from approximately 42 watts during stable operation. [94]
Like other gas-discharge lamps such as the very-similar mercury-vapor lamps, metal-halide lamps produce light by ionizing a mixture of gases in an electric arc.In a metal-halide lamp, the compact arc tube contains a mixture of argon or xenon, mercury, and a variety of metal halides, such as sodium iodide and scandium iodide. [7]