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Introduction of the first compact fluorescent lamps to feature almost instant light at switch-on without reducing lamp lifetime. 2008 — HiSpot ECO; The first high efficacy mains voltage halogen reflector lamp, whose 30% energy savings allow the 50W GU10 lamp to be replaced by an efficient 35W alternative with no loss of light.
Left to right: MR16 with GU10 base, MR16 with GU5.3 base, MR11 with GU4 or GZ4 base Line drawing of an LED MR16 lamp, with a heatsink rather than a reflector. A multifaceted reflector (often abbreviated MR) light bulb is a reflector housing format for halogen as well as some LED and fluorescent lamps.
The efficiency of the lamp increases with a larger filament diameter. Thin-filament, low-power bulbs benefit less from a fill gas, so are often only evacuated. Early light bulbs with carbon filaments also used carbon monoxide, nitrogen, or mercury vapor. However, carbon filaments operate at lower temperatures than tungsten ones, so the effect ...
Incandescent light bulbs that meet the new standards, for example high-efficiency halogen bulbs, would continue to be available. [111] It is estimated that greenhouse gas emissions will be cut by 800,000 tonnes (Australia's current emission total is 564.7 million tonnes), a saving of approximately 0.14%. [112]
GU10: 7004-121-2: 10 mm: 5 mm Twist-lock 120/230-volt MR16 halogen lighting of 35/50 watt, since the mid-2000s. Also used for compact fluorescents and LED lamps. GZ10: 7004-120-1: 10 mm: Twist-lock 120/230-volt MR16 halogen lighting of 35/50 watt, differs from GU10 by use of a dichroic reflector. GZ10 fixtures can use GU10 bulbs, but not vice ...
The GU10/GZ10 bases are shaped to prevent dichroic reflector lamps being used in luminaires intended for aluminised reflector lamps, which could cause overheating of the fitting. Higher efficiency LED versions of all of these lamps are now available.
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