A dual-output AC-DC power converter with balanced DC output voltages is described. The DC power source has balanced DC voltage outputs relative to DC midpoint irrespective of DC load imbalance. The input to the power source is three-phase four-wire AC voltage source. Current draws from the AC three-phase voltage source have 12-pulse near sinusoidal waveform. Ripple voltage from DC positive rail to DC negative rail is 12-pulse.

A dual-output AC-DC power converter with balanced DC output voltages is described. The DC power source has balanced DC voltage outputs relative to DC midpoint irrespective of DC load imbalance. The input to the power source is three-phase four-wire AC voltage source. Current draws from the AC three-phase voltage source have 12-pulse near sinusoidal waveform. Ripple voltage from DC positive rail to DC negative rail is 12-pulse.

An efficient solution to the problem of converting alternating signals into a plurality of signals having different signal characteristics in observation of different application requirements. This is achieved by a multiple input multiple output converter operated at a secondary side of an inductive power transfer system for converting at least one alternating input signal into a rectified alternating input signal and a further signal derived by averaging a switched voltage generated during rectification of the alternating input signal. The multiple input multiple output converter comprises at least one rectifier circuit adapted to rectify the alternating input signal and at least one averaging circuit adapted to average the switched voltage which is generated during rectification operation of the eat least one alternating input signal.

A multiple output rectifier achieving effective supply of power to a plurality of loads. The multiple output rectifier converts an AC input signal into a first rectified output signal and a second rectified output signal, wherein the AC input signal has a fundamental period dividing into a first partial period where an AC current flows in a first direction and a second partial period where the AC current flows in a second direction being a reverse direction to the first direction. The multiple output rectifier includes a first input terminal and a second input terminal different from the first input terminal for input of the AC input signal. The multiple output rectifier further includes a common output terminal, a first output terminal, and a second output terminal. The common output terminal, the first output terminal, and the second output terminal are decoupled from each other for operation in a multiple output operative mode. In the multiple output operative mode and during the first partial period the multiple output rectifier is adapted to maintain polarity of the AC input signal and to transfer it to the second output terminal and the common output terminal as the first rectified output signal. Further, in the multiple output operative mode and during the second partial period the multiple output rectifier is adapted to reverse polarity of the AC input signal and to transfer it to the first output terminal and the common output terminal as the second rectified output signal. The multiple output rectifier may also comprise a switching circuit component between the first output terminal and the second output terminal to change the multiple output operative mode to a full bridge operative mode and vice versa.

Converter with oscillator characterized in that it comprises an input for connecting the phase through a first node to cathode of a first diode as well as to anode of a second diode, where the first diode has anode connected through a third node to anode of a third diode as well as to a first output, wherein cathode of a third diode is connected through a fourth node to the anode of a fourth diode as well as to neutral conductor or to a second phase as well as to a second output, wherein the fourth diode has an anode connected to a third output and through a second node to the cathode of the second diode, wherein parallelly to the second node and to the third node at least one oscillator circuit comprising a bifilar coil with a first winding and a second winding and at least one capacitor is connected. Another object of the invention is a system comprising a converter with oscillator and a load as well as a three-phase system.

A hub device and a power supply method thereof are provided. The hub device includes a power input port, first and second power output ports, a power management circuit and a controller. When first and second electronic devices are respectively connected to the first and second power output ports, the controller determines an input electric power from at least one default supply power of the power adapter based on first operating power information of the first electronic device and second operating power information of the second electronic device, so as to control the power adapter to provide the input electric power to the power input port. The power management circuit receives the input electric power to generate first and second operating power, so as to output the first operating power to the first power output port and output the second operating power to the second power output port.

An energy harvesting circuit is provided that consists of two parallel paths, each comprising a transformer, full wave rectifier, and capacitor. An ultra-low-power microcontroller operates a double-position double-throw switch, which switches the capacitors from charging from the input, to providing energy to the output.

Various embodiments relate to a flyback type SMPS including a primary side controller on a primary side, a first switch on the primary side and a transformer including a primary side winding on the primary side, a secondary side winding on a secondary side and an auxiliary winding on the primary side connected to a first switching regulator wherein the first switching regulator is supplied during a primary stroke from the auxiliary winding when the first switch is on.

Various embodiments relate to a flyback type SMPS including a primary side controller on a primary side, a first switch on the primary side and a transformer including a primary side winding on the primary side, a secondary side winding on a secondary side and an auxiliary winding on the primary side connected to a first switching regulator wherein the first switching regulator is supplied during a primary stroke from the auxiliary winding when the first switch is on.

An efficient solution to the problem of converting alternating signals into a plurality of signals having different signal characteristics in observation of different application requirements. This is achieved by a multiple input multiple output converter operated at a secondary side of an inductive power transfer system for converting at least one alternating input signal into a rectified alternating input signal and a further signal derived by averaging a switched voltage generated during rectification of the alternating input signal. The multiple input multiple output converter comprises at least one rectifier circuit adapted to rectify the alternating input signal and at least one averaging circuit adapted to average the switched voltage which is generated during rectification operation of the eat least one alternating input signal.