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bulb envelope

См. также в других словарях:

  • bulb — noun Etymology: Middle English, from Latin bulbus, from Greek bolbos bulbous plant Date: 15th century 1. a. a resting stage of a plant (as the lily, onion, hyacinth, or tulip) that is usually formed underground and consists of a short stem base… …   New Collegiate Dictionary

  • envelope — [1] A thin rubber wrapper that surrounds the tread, sidewall and is tucked inside the curing rim during the pre cured cold process retreading. It protects bonding materials from humidity within the chamber. [2] A cover enclosing something… …   Dictionary of automotive terms

  • outer bulb — See outer envelope …   Dictionary of automotive terms

  • outer envelope — The bulb of a gas discharge lamp which protects and supports the arc tube; either filled with gas or evacuated to avoid oxidation of the arc tube …   Dictionary of automotive terms

  • List of vacuum tubes — This is a list of vacuum tubes or thermionic valves. Before the advent of semiconductor devices, hundreds of tube types were used in consumer and industrial electronics; today only a few types are still used in specialized applications. Contents… …   Wikipedia

  • Mercury-arc valve — Mercury rectifier on display in Beromünster, Switzerland before being decommissioned A mercury arc valve (mercury vapor rectifier) is a type of electrical rectifier used for converting high voltage or high current alternating current (AC) into… …   Wikipedia

  • Mercury arc valve — A mercury arc valve (mercury vapor rectifier) is a type of electrical rectifier which converts alternating current into direct current. Rectifiers of this type were used in electric motor power supplies for industry, in electric… …   Wikipedia

  • Christmas lighting technology — has been subject to considerable development and variation since the replacement of candles by electric lights. Contents 1 Incandescent Christmas Lights 2 LEDs 3 Fiber optic lights 4 B …   Wikipedia

  • Halogen lamp — A halogen lamp is an incandescent lamp in which a tungsten filament is sealed into a compact transparent envelope filled with an inert gas, plus a small amount of halogen such as iodine or bromine. The halogen cycle increases the lifetime of the… …   Wikipedia

  • Electrodeless lamp — In contrast with all other electrical lamps that use electrical connections through the lamp envelope to transfer power to the lamp, in electrodeless lamps the power needed to generate light is transferred from the outside of the lamp envelope by …   Wikipedia

  • Compact fluorescent lamp — Low energy light bulb redirects here. For other low energy bulbs, see LED lamp. The tubular type compact fluorescent lamp is one of the most popular types in Europe …   Wikipedia

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