Search results
Results From The WOW.Com Content Network
Power electronics is the application of electronics to the control and conversion of electric power. The first high-power electronic devices were made using mercury-arc valves. In modern systems, the conversion is performed with semiconductor switching devices such as diodes, thyristors, and power transistors such as the power MOSFET and IGBT ...
The world's first 380 kV power line was built in Sweden, the 952 km Harsprånget – Hallsberg line in 1952. In 1965, the first extra-high-voltage transmission at 735 kV took place on a Hydro-Québec transmission line. [53] In 1982 the first transmission at 1200 kV was in the Soviet Union.
First public television broadcasts in the UK by John Logie Baird between London and Glasgow and in the US by Frederic Eugene Ives (1882–1953) between Washington and New York. The American inventor Philo Taylor Farnsworth (1906–1971) developed in Los Angeles, the first fully electronic television system in the world.
The first electronic device used in power circuits was the electrolytic rectifier - an early version was described by a French experimenter, A. Nodon, in 1904. These were briefly popular with early radio experimenters as they could be improvised from aluminum sheets, and household chemicals.
The power MOSFET had an impact on power supplies, enabling higher operating frequencies, size and weight reduction, and increased volume production. [104] The power MOSFET, which is commonly used in power electronics, was developed in the early 1970s. [105]
A high-voltage transformer, to transform the low-voltage electricity from the power source, a battery or electric outlet, to a high enough voltage (from a few kilovolts to 75-100 kilovolts in powerful transmitters) to jump across the spark gap. The transformer charges the capacitor.
Long distance HVDC lines carrying hydroelectricity from Canada's Nelson River to this converter station where it is converted to AC for use in southern Manitoba's grid. A high-voltage direct current (HVDC) electric power transmission system uses direct current (DC) for electric power transmission, in contrast with the more common alternating current (AC) transmission systems. [1]
Power Conversion International Magazine (PCIM) Award for Leadership in Power Electronics Education, given at the High Frequency Power Conversion Conference in Santa Clara in May 1990. IEEE Millennium Medal, 2000, “in recognition and appreciation of valuable services and outstanding contributions.”