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The suffix after the G indicates the pin spread; the G dates to the use of Glass for the original bulbs. GU usually also indicates that the lamp provides a mechanism for physical support by the luminaire: in some cases, each pin has a short section of larger diameter at the end (sometimes described as a "peg" rather than a "pin" [2]); the socket allows the bulb to lock into place by twisting ...
Incandescent, halogen and HMI light sources use this design. Medium bi-post (G22) is used with film & stage lighting fixtures between 250 and 1000 watts. Mini bi-post (G4-G6) Common types: G4 – 4 mm (0.15748 in) pin spacing GU4 & GZ4 – same as G4 and only denote what lamp mount clip is needed to hold the actual light bulb in place
The GU24 fitting is intended to maintain the energy efficiency of the light by preventing an occupant from using an incandescent bulb instead of a CFL. Adapters to use incandescent bulbs in a GU24 fitting are illegal in the State of California as they would be a fire hazard in fixtures designed for the lower heat output of a CFL bulb.
12 V: 60 / 55 W PJ26.4t USA H15 2 12 V: 55 / 15 W 24 V: 60 / 20 W PGJ23t-1 USA ECE nominal luminous flux: 26/1350 ±10% Low-wattage filament for DRL function H16 1 12 V: 19 W PGJ19-3 H16B 1 12 V: 19 W PGJY19-3 H21W 1 12 V & 24 V: 21 W BAY9s H27W/1 1 12 V: 27W PG13 USA ANSI № 880 H27W/2 1 12 V: 27 W PGJ13 USA ANSI № 881 HB3 1 12 V: 60 W P20d ...
When commercial electric power was first introduced in the 1880s, it was used primarily for lighting. Other portable appliances (such as vacuum cleaners, electric fans, smoothing irons, and curling-tong heaters) were connected to light-bulb sockets. As early as 1885 a two-pin plug and wall socket format was available on the British market.
PIAA was the title sponsor in Formula One of the Tyrrell Racing Organisation's entrants for the 1997 and 1998 seasons. The PIAA sponsorship livery was displayed on the Tyrrell 025 driven by Mika Salo and Jos Verstappen, and on the Tyrrell 026 driven by Ricardo Rosset and Toranosuke Takagi. [5] [6] This helped increase international awareness of ...
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Halogen lamps made for 12 to 24 volt operation have good light outputs, and the very compact filaments are particularly beneficial for optical control (see picture). The ranges of multifaceted reflector "MR" lamps of 20–50 watts were originally conceived for the projection of 8 mm film, but are now widely used for display lighting and in the ...