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An AC adapter or AC/DC adapter (also called a wall charger, power adapter, power brick, or wall wart) [1] is a type of external power supply, often enclosed in a case similar to an AC plug. [2] AC adapters deliver electric power to devices that lack internal components to draw voltage and power from mains power themselves.
Today most 60 Hz systems deliver nominal 120/240 V, and most 50 Hz nominally 230 V. The significant exceptions are in Brazil, which has a synchronized 60 Hz grid with both 127 V and 220 V as standard voltages in different regions, [ 20 ] and Japan, which has two frequencies : 50 Hz for East Japan and 60 Hz for West Japan.
60 Hz 50 Hz [32] Conversion of 50 Hz distribution to 60 Hz is ongoing. [33] Haiti: A, B 110 V 220/380 V 110/220 V 60 Hz Honduras: A, B 110 V 208 V 230 V 240 V 460 V 480 V 60 Hz Hong Kong: G D, M [34] BS 1363 BS 546 220 V 380 V 50 Hz Type G is most common. Hungary: C F MSZ EN 50075 MSZ 9781-2 230 V 400 V 50 Hz Iceland: C, F 230 V 400 V
The waveform of 230 V and 50 Hz compared with 120 V and 60 Hz. The utility frequency, (power) line frequency (American English) or mains frequency (British English) is the nominal frequency of the oscillations of alternating current (AC) in a wide area synchronous grid transmitted from a power station to the end-user.
The 14-30 has a rating of 30 A, and an L-shaped neutral blade. The 14-50 has a rating of 50 A, and a straight neutral blade sized so that it does not mate with 14-30 connectors. NEMA 14-50 devices are frequently found in RV parks, since they are used for "shore power" connections of larger recreational vehicles.
Stand-alone switched-mode power supply An adjustable switched-mode power supply for laboratory use. A switched-mode power supply (SMPS), also called switching-mode power supply, switch-mode power supply, switched power supply, or simply switcher, is an electronic power supply that incorporates a switching regulator to convert electrical power efficiently.
A new power quality standard, AS 61000.3.100, was released in 2011 [25] that details additional requirements. The new standard stipulates a nominal 230 V, and the allowable voltage to the customer's point of supply is, as mentioned, +10% to −6%. However, the preferred operating range is +6% to −2%. (244 V–225 V).
Asus Transformer is a series of 2-in-1 convertibles, detachables and hybrid tablet computers, designed and manufactured by Asus, consisting of three major lineups. Asus Transformer Pad [ edit ]
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