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A 230-volt LED filament lamp, with an E27 base. The filaments are visible as the eight yellow vertical lines. An assortment of LED lamps commercially available in 2010: floodlight fixtures (left), reading light (center), household lamps (center right and bottom), and low-power accent light (right) applications An 80W Chips on board (COB) LED module from an industrial light luminaire, thermally ...
[12] [13] According to the World Bank, [14] power outage of Ethiopia occurred 8.2 times in a typical month, each average duration of 5.8 hours. Similarly, in July 2015–June 2016, daily electricity interruption from the Ethiopian Electric Utility estimated on average duration about 1–9 minutes at the distribution lines in Addis Ababa. [15]
Once its brightness decreases by 30 percent, white (clear) an LED street light is considered to be at the end of its life. Most LED street lights have a lens on the LED panel, which is designed to cast its light in a rectangular pattern, an advantage compared to traditional street lights, which typically have a reflector on the back side of a ...
Until 1987, Jell-O 1•2•3 was readily found in grocery stores throughout most of the United States, but the dessert is now rare. In 1971 packaged prepared pudding called Jell-O Pudding Treats were introduced. Jell-O Whip 'n Chill, a mousse-style dessert, was introduced and widely promoted; it remains available in limited areas today. A ...
The light from white LED lamps and LED strip lights is usually provided by industry standard surface-mounted device LEDs (SMD LEDs). [2] Non-SMD types of LED lighting also exist, such as COB (chip on board) and MCOB (multi-COB). Surface-mounted device LED modules are described by the dimensions of the LED package. A single multicolor module may ...
The first LED was created by Soviet inventor Oleg Losev [9] in 1927, but electroluminescence was already known for 20 years, and relied on a diode made of silicon carbide. Commercially viable LEDs only became available after Texas Instruments engineers patented efficient near-infrared emission from a diode based on GaAs in 1962.
The least concern is given for the backbone of the electric grid. Ethiopia steadily invests in high voltage transmission lines (130 kV ac, 230 kV ac; 400 kV ac). For large energy exports to the wider East African area, Ethiopia and Kenya are now building a 500 kV HVDC line over 1045 km length, that is expected to carry 2 GW. [27]
[4] [5] As at September 9, 2024, Jiji is ranked as the 42th overall most visited website in Nigeria by Alexa, [6] and as the 42nd TOP site in Nigeria for all categories by SimilarWeb. [ 7 ] Jiji was founded in 2014 in Lagos , Nigeria by Anton Volianskyi, who is the company's CEO .