medium-voltage power supply
91ABB Asea Brown Boveri — Infobox Company company name = ABB company company type = Public (SWX|CH0012221716CHF1|ABBN) (OMX|SSE3966|ABB) (NYSE|ABB) slogan = Power and productivity for a better world. foundation = 1988 through merger of ASEA of Sweden and Brown, Boveri Cie …
92Arc welding — uses a welding power supply to create an electric arc between an electrode and the base material to melt the metals at the welding point. They can use either direct (DC) or alternating (AC) current, and consumable or non consumable electrodes.… …
93Railway electric traction — Contents 1 History 2 Unit types 2.1 DC traction units 2.2 …
94IEEE 1394 — Firewire redirects here. For other uses, see Firewire (disambiguation). IEEE 1394 Interface Type Serial Production history Designer …
95Welding — is a fabrication process that joins materials, usually metals or thermoplastics, by causing coalescence. This is often done by melting the workpieces and adding a filler material to form a pool of molten material (the weld puddle ) that cools to… …
96Transmission tower — A delta pylon carrying a 400kV power line towards Madrid. A transmission tower (colloquially termed an electricity pylon in the United Kingdom and parts of Europe, an ironman in Australia, and a hydro tower in parts of Canada) is a tall structure …
97Lego Rock Raiders — was a Lego theme started 1999, and was discontinued in 2000. Rock Raiders was the only theme in the Lego Underground series. The theme, while short lived, featured sixteen sets and was backed up by numerous story related media, including several… …
98coal mining — Coal was very important in the economic development of Britain. It was used as fuel in the factories built during the Industrial Revolution and continued to be important until the 1980s. The main coalfields are in north east England, the north… …
99electronics — /i lek tron iks, ee lek /, n. (used with a sing. v.) the science dealing with the development and application of devices and systems involving the flow of electrons in a vacuum, in gaseous media, and in semiconductors. [1905 10; see ELECTRONIC,… …
100Loudspeaker — For other uses, see Loudspeaker (disambiguation). An inexpensive, low fidelity 3½ inch speaker, typically found in small radios …
