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Voltage converter : ウィキペディア英語版 | Voltage converter
A voltage converter is an electric power converter which changes the voltage of an electrical power source. It may be combined with other components to create a power supply. ==AC and DC== AC voltage conversion uses a transformer. Conversion from one DC voltage to another requires electronic circuitry (electromechanical equipment was required before the development of semiconductor electronics). See the article on war of currents for more about this. Mains power (called household current in the US) is universally AC.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Voltage converter」の詳細全文を読む
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