| 摘要 |
A power supply apparatus capable of providing medium voltage direct current to provide medium voltage and low voltage direct current includes a power supply input unit, a rectification unit and a conversion unit. The power supply input unit delivers AC voltage to the rectification unit which rectifies and outputs medium voltage DC. A portion of the medium voltage DC is further transformed by the conversion unit such that the whole DC power supply apparatus not only supplies low voltage power also directly supplies medium voltage power to enhance flexibility and efficiency of power supply for information appliances in the PC era.
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