Abstract: A power distribution unit is connected to a three-phase electric power source having three phase wires with different phases, and includes a socket and a switch. The socket has a first socket terminal connected to one of the phase wires, and a second socket terminal. The switch includes a first switch terminal connected to another one of the phase wires, a second switch terminal connected to a neutral, and a third switch terminal connected to the second socket terminal. By selectively connecting the third and the first switch terminals, or connecting the third and the second switch terminals, a line-to-neutral voltage or a line-to-line voltage from the three-phase electric power source is outputted by the socket.

Abstract: A switch device includes first and second switch units that are coupled respectively to first and second output terminals. Each of the first and second switch units includes a plurality of diodes and at least one semiconductor-controlled rectifier (SCR), where at least one of the diodes and one of the at least one SCR cooperatively permit a current to flow therethrough to a corresponding one of the first and second output terminals when each thereof operates in an ON state, and where at least one of the diodes and one of the at least one SCR cooperatively permit a current to flow therethrough from a corresponding one of the first and second output terminals when each thereof operates in an ON state.

Abstract: The invention provides a method of integrating a server using alternating current power (AC server) into a server system using direct current power (DC server system) and an alternative junction device therefor. The integrating method includes: providing an AC server having a plug-in power supply unit; providing an alternative junction device for replacing the plug-in power supply unit; extracting the plug-in power supply unit from the AC server; plugging the alternative junction device into the AC server; and coupling the alternative junction device to a direct current power supply unit of a DC server system. The alternative junction device includes: a shell to be installed into a containing slot of an AC server; an output coupled to a DC input of a processor of the AC server when the shell is installed into the containing slot; and an input coupled to a DC power supply unit of a DC server system.

Abstract: The invention provides a method of integrating a server using alternating current power (AC server) into a server system using direct current power (DC server system) and an alternative junction device therefor. The integrating method includes: providing an AC server having a plug-in power supply unit; providing an alternative junction device for replacing the plug-in power supply unit; extracting the plug-in power supply unit from the AC server; plugging the alternative junction device into the AC server; and coupling the alternative junction device to a direct current power supply unit of a DC server system. The alternative junction device includes: a shell to be installed into a containing slot of an AC server; an output coupled to a DC input of a processor of the AC server when the shell is installed into the containing slot; and an input coupled to a DC power supply unit of a DC server system.

Abstract: A power distribution unit is connected to a three-phase electric power source having three phase wires with different phases, and includes a socket and a switch. The socket has a first socket terminal connected to one of the phase wires, and a second socket terminal. The switch includes a first switch terminal connected to another one of the phase wires, a second switch terminal connected to a neutral, and a third switch terminal connected to the second socket terminal. By selectively connecting the third and the first switch terminals, or connecting the third and the second switch terminals, a line-to-neutral voltage or a line-to-line voltage from the three-phase electric power source is outputted by the socket.

Abstract: The invention provides a rack with a built-in power distribution unit. The rack with a built-in power distribution unit includes a top, a bottom, the built-in power distribution unit and at least one supporting column. The built-in power distribution unit has a column housing and a plurality of power sockets, wherein the column housing is rotatably configured between the top and the bottom and the plurality of power sockets are configured on the column housing. The least one supporting column is configured between the top and the bottom, supports the top with the built-in power distribution unit, and forms a containing space with the column housing, the top and the bottom.

Abstract: A control method for a voltage boosting circuit adapted to be used in an uninterruptible power supply is proposed. The uninterruptible power supply includes a battery module and a voltage boosting circuit comprising a plurality of switch elements, in which the uninterruptible power supply is operating under a battery supply mode. The control method includes the following steps: detecting an output voltage of the battery module and a regulated predetermined output voltage of the voltage boosting circuit; and when the output voltage of the battery module is higher than the regulated predetermined output voltage of the voltage boosting circuit, sending a switching signal to regulate the switching operation of the switch elements of the voltage boosting circuit, so that the output voltage of the voltage boosting circuit is substantially equal to the output voltage of the battery module.

Abstract: A control method for a voltage boosting circuit adapted to be used in an uninterruptible power supply is proposed. The uninterruptible power supply includes a battery module and a voltage boosting circuit comprising a plurality of switch elements, in which the uninterruptible power supply is operating under a battery supply mode. The control method includes the following steps: detecting an output voltage of the battery module and a regulated predetermined output voltage of the voltage boosting circuit; and when the output voltage of the battery module is higher than the regulated predetermined output voltage of the voltage boosting circuit, sending a switching signal to regulate the switching operation of the switch elements of the voltage boosting circuit, so that the output voltage of the voltage boosting circuit is substantially equal to the output voltage of the battery module.

Abstract: A battery ground fault detecting circuit applied to an uninterruptible power system is disclosed. The uninterruptible power system has a controller and is connected to a battery box having a ground terminal. The battery ground fault detecting circuit is employed for detecting whether a ground fault is occurred in a battery mounted in the battery box, so that the controller can execute a corresponding protection procedure.

Abstract: A battery ground fault detecting circuit applied to an uninterruptible power system is disclosed. The uninterruptible power system has a controller and is connected to a battery box having a ground terminal. The battery ground fault detecting circuit is employed for detecting whether a ground fault is occurred in a battery mounted in the battery box, so that the controller can execute a corresponding protection procedure.