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One of the first diameters of fluorescent lamps, with the 15W T8 and 30W T8 having been introduced in 1938. [3] The European energy-saving krypton T8 lamps were introduced by Thorn EMI during the 1970s. [4] The North American energy-saving argon T8 lamps weren't introduced until the 1980s. [5] T9 T29 1 + 1 ⁄ 8: 28.6 G10q quad-pin; G13 bi-pin ...
T5 retrofit conversion is a means of converting light fittings designed to use T8 format lamps, so that they can use more energy-efficient T5 lamps. [1] This is done by electronically converting the luminaires to high frequency operation.
A compact fluorescent lamp (CFL), also called compact fluorescent light, energy-saving light and compact fluorescent tube, is a fluorescent lamp designed to replace an incandescent light bulb; some types fit into light fixtures designed for incandescent bulbs.
T12 fluorescent tubes. The first two are rapid start, (for "tombstone" and socket holders respectively) while the third is an instant-start lamp. The instant-start has a characteristic, rounded, single pin, for plugging into the spring-loaded socket holders. Instant start fluorescent tubes were invented in 1944. Instant start simply uses a high ...
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T20 size ANSI № 7440 WY21W WX3×16d 1 12 V: 21 W Amber ANSI № 7440NA WP21W WY2.5×16d 1 12 V: 21 W WPY21W WZ2.5×16d 1 12 V: 21 W Amber W21/5W W3×16q 2 12 V: 21 / 5 W T20 size ANSI № 7443 WR21/5W WY3×16q 2 12 V: 21 / 5 W Red