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The One Watt Initiative is an energy-saving initiative by the International Energy Agency (IEA) to reduce standby power-use by any appliance to no more than one watt in 2010, and 0.5 watts in 2013. The initiative has given rise to regulations in many countries and regions.
WEG S.A. is a Brazilian company operating worldwide in the electric engineering, power and automation technology areas, headquartered in Jaraguá do Sul, Brazil.The company produces electric motors, generators, alternators, transformers, turbines, BESS, drives, coatings, and provides industrial automation services, among other products and integrated solutions related to electric systems.
LED power dissipation is modeled as a current source; thermal resistance is modeled as a resistor; and the ambient temperature is modeled as a voltage source. High power light-emitting diodes (LEDs) can use 350 milliwatts or more in a single LED. Most of the electricity in an LED becomes heat rather than light – about 70% heat and 30% light. [1]
Epistar Corp. [1] was established in 1996, and its headquarters are in Hsinchu. [3] In 2009 it had an annual turnover of NT $10 billion. [ 2 ] Epistar specialises in high-brightness LED products, which are used in general lighting, traffic signals, and various consumer products such as mobile phones and laptop computers. [ 3 ]
A power inverter, inverter, or invertor is a power electronic device or circuitry that changes direct current (DC) to alternating current (AC). [1] The resulting AC frequency obtained depends on the particular device employed. Inverters do the opposite of rectifiers which were originally large electromechanical devices converting AC to DC. [2]
As an example, a 250 kVA motor–generator operating at 300 ampere of full load current will require 1550 ampere of in-rush current during a re-closure after 5 seconds. This example used a fixed mounted flywheel sized to result in a 1 ⁄ 2 Hz per second slew rate. The motor–generator was a vertical type two-bearing machine with oil-bath ...
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