Abstract: A multi-voltage power supply includes a transformer connecting to an AC power source to regulate voltage and deliver voltage-transformed electric power, a rectification output circuit connecting to the transformer to rectify the voltage-transformed electric power and output first DC power, and at least one voltage regulation circuit to receive the first DC power from a first DC power output line and regulate to become second DC power. The first DC power on the first DC power output line reaches a first potential after a voltage boosting period. The rectification output circuit has a rear end installing a hysteresis unit which adds a delay time in the voltage boosting period to defer the time of the first DC power reaching the first potential. Thereby the time difference between delivering DC power output of the first DC power and the second DC power can be regulated to avoid abnormal start of computers.

Abstract: A multi-voltage power supply includes a transformer connecting to an AC power source to regulate voltage and deliver voltage-transformed electric power, a rectification output circuit connecting to the transformer to rectify the voltage-transformed electric power and output first DC power, and at least one voltage regulation circuit to receive the first DC power from a first DC power output line and regulate to become second DC power. The first DC power on the first DC power output line reaches a first potential after a voltage boosting period. The rectification output circuit has a rear end installing a hysteresis unit which adds a delay time in the voltage boosting period to defer the time of the first DC power reaching the first potential. Thereby the time difference between delivering DC power output of the first DC power and the second DC power can be regulated to avoid abnormal start of computers.

Abstract: A backup-type power supply system aims to integrate power output according to different potentials through different power supply modules. Each power supply module includes backup-type N+1 power supply devices and an independent power balance unit to output power in a balanced fashion so that users can add the power supply module of independent potential according requirements. Thereby transformation power loss of the power supply devices can be reduced. The power supply devices can be designed with different specifications and dimensions corresponding to different electronic devices.

Abstract: The present invention relates to a control circuit of power supply with selectable current-limiting modes. Via a select circuit in the control circuit of the power supply of the present invention, the user himself can select and switch the operating mode of the current-limiting compare circuit to be one to one, one to multiple, multiple to multiple, or multiple to one mode in order to enable the loads to be compared by an individual set or integrated sets of current-limiting compare circuits; thereby, according to the power usage conditions of the various combinations of the loads, the user himself can select and switch the current-limiting mode in just a single power supply of the present invention, and further, the manufacturer is needless to fabricate variant specifications of power supplies.

Abstract: The present invention discloses a control circuit of power supply with selectable current-limiting modes, wherein the control circuit which maintains the power-output circuit of the power supply within the energy-limiting standard is performed with automatic detection mode. In the present invention, a current-limiting set unit of the control circuit is coupled to the power-output circuit and provides a current-limiting set value according to power-output levels of the power-output circuit and outputs a current-limiting set signal to a current-limiting switch unit. The current-limiting set unit sets up switch junctions on the power-output levels of the power-output circuit, and the current-limiting switch unit receives the current-limiting set signal to determine the state of the switch junctions in order to provide current-limiting detect values of single set or multiple sets of power-output levels for the current-limiting set unit.

Abstract: The present invention relates to a control circuit of power supply with selectable current-limiting modes. Via a select circuit in the control circuit of the power supply of the present invention, the user himself can select and switch the operating mode of the current-limiting compare circuit to be one to one, one to multiple, multiple to multiple, or multiple to one mode in order to enable the loads to be compared by an individual set or integrated sets of current-limiting compare circuits; thereby, according to the power usage conditions of the various combinations of the loads, the user himself can select and switch the current-limiting mode in just a single power supply of the present invention, and further, the manufacturer is needless to fabricate variant specifications of power supplies.

Abstract: The present invention discloses a control circuit of power supply with selectable current-limiting modes, wherein the control circuit which maintains the power-output circuit of the power supply within the energy-limiting standard is performed with automatic detection mode. In the present invention, a current-limiting set unit of the control circuit is coupled to the power-output circuit and provides a current-limiting set value according to power-output levels of the power-output circuit and outputs a current-limiting set signal to a current-limiting switch unit. The current-limiting set unit sets up switch junctions on the power-output levels of the power-output circuit, and the current-limiting switch unit receives the current-limiting set signal to determine the state of the switch junctions in order to provide current-limiting detect values of single set or multiple sets of power-output levels for the current-limiting set unit.