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The IBM 9020 was an IBM System/360 computer adapted into a multiprocessor system for use by the U.S. FAA for Air Traffic Control. [1] Systems were installed in the FAA's 20 en route Air Route Traffic Control Centers (ARTCCs), beginning in the late 1960s. [2]: 6 The U.K. CAA also installed a system in its London centre. [3]
Petroleum coke (1 unit) Opened in 1955. [8] Cardinal Power Plant: Brilliant: 1800: Buckeye Power: Coal (3 units) Unit 3 to be shut down in 2028, lowering generation capacity to 1180MW. [9] Gavin Power Plant: Cheshire: 2640: Gavin Power, LLC: Coal (2 units) [10] Only runs 60% of the time. Up to 50% of Gavin’s cash flow comes from being on ...
They began as the HP 9020, HP 9030, and HP 9040, were renamed the HP Series 500 Model 20, 30, and 40 shortly after introduction, and later renamed again as the HP 9000 Model 520, 530 and 540. The 520 was a complete workstation with built-in keyboard, display, 5.25-inch floppy disk, and optional thermal printer and 5 MB hard disk.
Convergent Technologies, Inc., was an American computer company formed by a small group of people who left Intel Corporation and Xerox PARC in 1979. [2] Among the founders were CEO Allen Michels, VP Engineering Bob Garrow, head of marketing Kal Hubler, and operating system architect Ben Wegbreit.
Distribution substations inside a small tower-like building are common in Europe. Near Jelenia Góra, Poland. In the United States, distribution transformers are often installed outdoors on wooden poles. In Europe, it is most common to place them in buildings. If the feeding lines are overhead, these look like towers.
To sectionalize the transmission network and protect against failures, a wave trap is connected in series with the power (transmission) line. They consist of one or more sections of resonant circuits, which block the high-frequency carrier waves (24–500 kHz) and let power frequency current (50–60 Hz) pass through.
The electrical power grid that powers Northern America is not a single grid, but is instead divided into multiple wide area synchronous grids. [1] The Eastern Interconnection and the Western Interconnection are the largest. Three other regions include the Texas Interconnection, the Quebec Interconnection, and the Alaska Interconnection.
Although electrical grids are widespread, as of 2016, 1.4 billion people worldwide were not connected to an electricity grid. [1] As electrification increases, the number of people with access to grid electricity is growing. About 840 million people (mostly in Africa), which is ca. 11% of the World's population, had no access to grid ...