Abstract: A modular power device is used for mounting on a main plate. The modular power device includes a first substrate, a driving module, and a converting module. The first substrate having a first axial direction and a second axial direction perpendicular to the first axial direction is inserted into the main plate to make the second axial direction be perpendicular to the main plate. The driving module is located on one side of the first substrate, and the converting module is located on the other side of the first substrate and includes a second substrate, wherein the second substrate is inserted into the main plate. A length of the converting module is substantially equal to that of the first substrate in the first axial direction, and a width of the converting module is smaller than a length of the first substrate in the first axial direction.

Abstract: A modular power device is used for mounting on a main plate. The modular power device includes a first substrate, a driving module, and a converting module. The first substrate having a first axial direction and a second axial direction perpendicular to the first axial direction is inserted into the main plate to make the second axial direction be perpendicular to the main plate. The driving module is located on one side of the first substrate, and the converting module is located on the other side of the first substrate and includes a second substrate, wherein the second substrate is inserted into the main plate. A length of the converting module is substantially equal to that of the first substrate in the first axial direction, and a width of the converting module is smaller than a length of the first substrate in the first axial direction.

Abstract: A modular power device is used for mounting on a main plate. The modular power device includes a first substrate, a driving module, and a converting module. The first substrate has a first axial direction and a second axial direction perpendicular to the first axial direction. The driving module is located on one side of the first substrate, the converting module is located on the other side of the first substrate, and includes a second substrate parallel to the main plate, wherein two opposite sides of the first substrate are inserted into the main plate and the second substrate. A length of the converting module is equal to that of the first substrate in the first axial direction, and a width of the converting module is smaller than a length of the first substrate in the first axial direction.

Abstract: A modular power device is used for mounting on a main plate. The modular power device includes a first substrate, a driving module and a converting module. The first substrate having a first axial direction and a second axial direction substantially perpendicular to the first axial direction is inserted into the main plate, such that the second axial direction is substantially perpendicular to the main plate. The driving module is located on one side of the first substrate and electrically connected thereon. The converting module is located on the other side of the first substrate and electrically connected to the driving module. A length of the converting module is substantially equal to that of the first substrate in the first axial direction, and a width of the converting module is smaller than a length of the first substrate in the first axial direction.

Abstract: A power supplying device includes a power supplying unit, a first switching element, a compensating unit, a controller, and an over-voltage protecting unit. The power supplying unit includes a main power-outputting terminal, a standby power-outputting terminal, a DC to DC power converter, and a first sensing resistor. The DC to DC power convertor includes a power-outputting terminal The first sensing resistor is electrically connected to the power-outputting terminal and the main power-outputting terminal The first switching element is electrically connected to the first sensing resistor and the main power-outputting terminal The compensating unit is electrically connected to the main power-outputting terminal The controller is electrically connected to the compensating unit and the power supplying unit.

Abstract: A bridgeless power factor corrector with a single choke is electrically connected to an AC power source. The bridgeless power factor corrector includes a choke element, a first switch, a second switch, a first diode, a second diode, a capacitor, a first rectify diode, and a second rectify diode. The choke element is electrically connected between the first switch and the second switch. The first switch and the second switch are controlled to be turned on or turned off by a first control signal and a second control signal, respectively, to provide a power factor correction for the AC power source when the AC power source is in a positive half cycle or a negative half cycle. Furthermore, a method of operating the bridgeless power factor corrector is provided.

Abstract: A bridgeless power factor corrector with a single choke is electrically connected to an AC power source. The bridgeless power factor corrector includes a choke element, a first switch, a second switch, a first diode, a second diode, a capacitor, a first rectify diode, and a second rectify diode. The choke element is electrically connected between the first switch and the second switch. The first switch and the second switch are controlled to be turned on or turned off by a first control signal and a second control signal, respectively, to provide a power factor correction for the AC power source when the AC power source is in a positive half cycle or a negative half cycle. Furthermore, a method of operating the bridgeless power factor corrector is provided.

Abstract: A modular power device is used for mounting on a main plate. The modular power system includes a first substrate, a driving module and a converting module. The first substrate having a first axial direction and a second axial direction substantially perpendicular to the first axial direction is inserted into the main plate, such that the second axial direction is substantially perpendicular to the main plate. The driving module is located on one side of the first substrate and electrically connected thereon. The converting module is located on the other side of the first substrate and electrically connected to the driving module. A length of the converting module is substantially equal to that of the first substrate in the first axial direction, and a width of the converting module is smaller than a length of the first substrate in the first axial direction.