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The abbreviations AC and DC are often used to mean simply alternating and direct, respectively, as when they modify current or voltage. [ 1 ] [ 2 ] The usual waveform of alternating current in most electric power circuits is a sine wave , whose positive half-period corresponds with positive direction of the current and vice versa (the full ...
The war of the currents was a series of events surrounding the introduction of competing electric power transmission systems in the late 1880s and early 1890s. It grew out of two lighting systems developed in the late 1870s and early 1880s; arc lamp street lighting running on high-voltage alternating current (AC), and large-scale low-voltage direct current (DC) indoor incandescent lighting ...
A power converter is an electrical device for converting electrical energy between alternating current (AC) and direct current (DC). It can also change the voltage or frequency of the current. Power converters include simple devices such as transformers, and more complex ones like resonant converters.
The introduction of AC/DC circuitry allowed a single model to be used on either AC or DC mains as a selling point, [2] and some such models added "Universal" to their name [3] (such sets usually had user-settable voltage tapping arrangements to cater for the wide range of voltages). [4] The first ever AC/DC design of radio was the All American ...
The AC current density J in a conductor decreases exponentially from its value at the surface J S according to the depth d from the surface, as follows: [4]: 362 = (+) / where is called the skin depth which is defined as the depth below the surface of the conductor at which the current density has fallen to 1/e (about 0.37) of J S.
In December 1975, Atlantic Records' UK head Phil Carson signed AC/DC to a worldwide deal. The group's first two albums, High Voltage and the harder driving T.N.T., had been hits in their native Australia – the single "It's a Long Way to the Top (If You Wanna Rock 'n' Roll)" peaked at #5 – and now plans were made for the band to tour England in 1976.
Volts is an album by AC/DC released as a part named "Disc Four" on the Bonfire box set. Released in November 1997, the album is a compilation of some alternative versions of songs recorded for the albums Let There Be Rock and Highway to Hell, and some songs previously released.
No Bull is a live video released by AC/DC in November 1996, filmed on Super 16mm at Madrid's Plaza de Toros de Las Ventas on 10 July 1996 during the Ballbreaker World Tour.It was directed by David Mallet, produced by Rocky Oldham, mixed by Mike Fraser, and edited by David Gardener and Simon Hilton; production company was Serpent Films.
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