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The E11 base is sometimes used for 50/75/100 Watt halogen lamps in North America, where it is called the "mini-can", and tighter threads are used to keep them out of E12 base nightlights and other places where they could start a fire. [citation needed] There are also adapters between screw sizes, and for adapting to or from bayonet caps.
The light bulb commonly used since the early 20th century for general-purpose lighting applications, with a pear-like shape and an Edison screw base, is referred to as an "A-series light bulb." This most common general purpose bulb type would be classed as "A19/E26" or the metric version "A60/E27".
The A-series light bulb is the "classic" glass light bulb shape that has been the most commonly used type for general lighting service (GLS) applications since the early 20th century. It has a pear-like shape and is typically fitted to either an Edison screw or a bayonet cap base.
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 V: 6 W HY6W BAZ9s 1 12 V: 6 W Amber H10W/1 BAU9s 1 12 V: 10 W HY10W BAUZ9s 1 12 V: 10 W Amber H21W BAY9s 1 12 V & 24 V ...
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 ...
A 230-volt incandescent light bulb with a medium-sized E27 (Edison 27 mm) male screw base. The filament is visible as the mostly horizontal line between the vertical supply wires. A scanning electron microscope image of the tungsten filament of an incandescent light bulb Elaborate light in Denver, Colorado
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