double-current transmission system
51Northeast Blackout of 2003 — The Northeast Blackout of 2003 was a massive widespread power outage that occurred throughout parts of the Northeastern and Midwestern United States, and Ontario, Canada on Thursday, August 14, 2003, at approximately 4:15 pm EDT (20:15 UTC), with …
52Electricity sector in Honduras — Source : World Bank, 2007 The Electricity Coverage Index by department shows great disparities. Cortes and Islas de Bahia enjoy almost a 100% household coverage, while Lempira and Intibuca only have 24.6% and 36.2% coverage respectively. World… …
53DB Class 628 — Quantity: 304 Manufacturer: Düwag, Waggon Union, AEG and others Entered service: 1986 1996 …
54Intermittent power source — [ Erie Shores Wind Farm monthly output over a two year period] An intermittent power source is a source of electric power generation that may be uncontrollably variable or more intermittent than conventional power sources, and therefore non… …
55National Grid (Great Britain) — For the UK Ordnance Survey National Grid for mapping co ordinates in Great Britain, see Ordnance Survey National Grid. 400 kV power line in Cheshire The National Grid is the high voltage electric power transmission network in …
56Wind power — Wind power: worldwide installed capacity [1] …
57Orthogonal frequency-division multiplexing — Passband modulation v · d · e Analog modulation AM · …
58Delta-sigma modulation — Delta sigma (ΔΣ; or sigma delta, ΣΔ) modulation is a method for encoding high resolution or analog signals into lower resolution digital signals. The conversion is done using error feedback, where the difference between the two signals is… …
59Thomas Edison — Infobox person name = Thomas Alva Edison caption = Genius is one percent inspiration, ninety nine percent perspiration. Thomas Alva Edison, Harper s Monthly (September 1932) birth date =birth date|1847|02|11 birth place =Milan, Ohio death date… …
60Modulation — For musical change of key, see Modulation (music). For other uses, see Modulation (disambiguation). Passband modulation v · d · e …
