ALTERNATING CURRENT (AC)/DIRECT CURRENT (DC)-USE SERVER POWER SUPPLY COMPRISING A SIMPLE JUDGMENT CIRCUIT FOR IMPROVING POWER SUPPLY EFFICIENCY

摘要

PURPOSE: An alternating current (AC)/direct current (DC)-use server power supply is provided to improve power supply efficiency by comprising a simple AD and DC power supply judgment circuit for stable power factor control (PFC) operation control.;CONSTITUTION: Each end unit of a DC cut-off unit (20) is parallelly connected to each of a rectification unit. An AC high voltage branch unit (30) is connected to a lower part of a condenser of the DC cut-off unit. An AC/DC conversion unit (40) is parallelly connected to both ends of the AC high voltage branch unit. A chattering removal unit (50) is parallelly connected to the AC/DC conversion unit. A relay driving unit (70) is parallelly connected to an initial operation limit unit (60). A DC switching relay driving coil (80) is connected to a collector end of the relay driving unit. A DC switching relay contact point (81) turns on/off a circuit according to operation of the DC switching relay driving unit.;COPYRIGHT KIPO 2013;[Reference numerals] (10) PFC (AC/DC) controller; (AA) FUSE EMI filter