Abstract: A dc link module for a power circuit includes a first connector for connecting to a first power conversion circuit, a second connector for connecting to a second power conversion circuit, wherein the second power conversion circuit is connected to a load circuit arranged to at least intermittently operate as a power source to the power circuit, at least one dc link capacitors arranged between said first connector and said second connector for processing a voltage signal received at said first connector or said second connector, and at least one voltage compensation circuits arranged between said first connector and said second connector, said one or more voltage compensation circuits arranged to generate a voltage signal to compensate an ac ripple component in a dc voltage signal appearing across the at least one dc link capacitor.

Abstract: An electrical load driving apparatus, comprising a current distribution apparatus having a power source arranged to deliver an input current into a plurality of branches such that the input current is distributed into a plurality of individual branch currents, wherein each of the plurality of branches includes an inductive arrangement arranged to form an inductive coupling with an associated inductive arrangement of at least one other associated branch, and a plurality of output loads connect to each of the associated branches of the current distribution apparatus.

Abstract: A circuit arrangement for filtering an electric current, wherein the circuit arrangement is arranged between a power source providing the electric current and a load; and the electric current includes a first current component and a second current component. The circuit arrangement includes a first circuit arranged to receive and filter the first current component, a current control device arranged to receive and regulate the second current component so as to provide a regulated current to the load, and a control circuit arranged to provide a control signal to the current control device so as to control regulation of the second current component. The control circuit is further arranged to detect one or more operation parameters associated with the current control device, and to determine the control signal based on the one or more detected operation parameters.

Abstract: An input filter for a power electronic system includes a series-pass device arranged to control an input characteristic of a power converter, and a control mechanism arranged to control an operation of the series-pass device during a power conversion process, so as to filter a noise signal generated by the power converter from reaching a power source of the power electronic system.

Abstract: An LED lighting circuit includes a first node and a second node adapted to couple with an AC input power source; and an LED circuit loop having a plurality of LED light strings each having one or more LED light elements, the LED circuit loop defines a closed loop arranged between the first node and the second node and is connected to the first node and the second node respectively through a capacitive arrangement such that the LED light strings in the LED circuit loop is arranged to be driven with DC power while AC power provided by the AC input power source is transmitted between the first and second nodes.

Abstract: An apparatus facilitating luminosity uniformity across organic light emitting diode (OLED) device is provided. In one embodiment, the apparatus can include an organic light emitting diode (OLED) device including: an anode; a semiconductor material coupled to the anode; and a cathode coupled to the semiconductor material. The apparatus can also include a hollow heat sink coupled to the cathode and configured to reduce a temperature of the OLED device resulting in a first temperature of the OLED device being a first value in a first region of the OLED device and a second temperature of the OLED device being a second value in a second region of the OLED device. A temperature distribution characterized by a change in temperature from the first temperature to the second temperature to a third temperature is approximately ?-shaped from the first region to the second region to the third region.

Abstract: A battery tester for efficiently extracting intrinsic characteristics of a battery. The battery tester comprises a sensing unit, a controller, bi-directional power converter, and an energy storage unit so that energy discharged from a battery during testing is stored in the energy storage unit and recycled back to the battery. The battery tester uses a high current pulse test and a switching excitation test with a modified particle arm optimization algorithm to analyze precise model parameters that can be used to describe the health conditions of a battery.

Abstract: A power flow control apparatus comprising a current distribution circuit arranged to distribute an input current into a plurality of branches such that the input current is distributed into a plurality of individual branch currents; wherein each of the plurality of branches includes an inductive arrangement arranged to form an inductive coupling with an associated inductive arrangement of at least one other associated branch, and a plurality of compensator units in electrical communication with the plurality of branches, wherein each compensator unit is arranged to deliver a branch compensating voltage relative to the branch current.

Abstract: A current distribution apparatus comprising a common current source arranged to deliver an input current into a plurality of branches such that the input current is distributed into a plurality of individual branch currents, wherein each of the plurality of branches includes an inductive arrangement arranged to form an inductive coupling with an associated inductive arrangement of at least one other associated branch.

Abstract: An inductive power transfer system for driving multiple organic light emitting diode panels is provided. In an aspect, the system includes a plurality of transformers electrically coupled to one another in a daisy-chain formation and a plurality of power modules operatively coupled to respective ones of the plurality of transformers. Respective output voltages of the plurality of transformers are configured to provide power to organic light emitting diode panels in response to respective ones of the organic light emitting diode panels being coupled to respective ones of the plurality of the power modules via respective detachable transformers mechanically and operatively coupled to the respective ones of the organic light emitting diode panels. The system further includes a single switching module operatively coupled to the plurality of transformers and configured to drive the inductive power transfer system with a single output current.

Abstract: An LED lighting circuit includes a first node and a second node adapted to couple with an AC input power source; and an LED circuit loop having a plurality of LED light strings each having one or more LED light elements, the LED circuit loop defines a closed loop arranged between the first node and the second node and is connected to the first node and the second node respectively through a capacitive arrangement such that the LED light strings in the LED circuit loop is arranged to be driven with DC power while AC power provided by the AC input power source is transmitted between the first and second nodes.

Abstract: An apparatus and method for burning-in an electronic ballast for a lamp. The apparatus comprises a first stage for emulating an input impedance characteristic of a lamp for the electronic ballast and a second stage connected to the first stage for providing energy feedback to a power supply. An input of the first stage connects in use to the electronic ballast to be burnt-in. An output of the second stage connects in use to the power supply to provide energy feedback to said power supply from the electronic ballast being burnt-in. The energy-recyclable burn-in apparatus can emulate the lamp characteristics from start up to the steady state, process high-frequency ballast output power and recycle the power back into the power grid. The burn-in method includes operating the apparatus for a predetermined period of time such that a voltage applied to the electronic ballast simulates a steady-state operation of a lamp for the electronic ballast.

Abstract: A universal serial bus (USB) power supply is disclosed as including a main body (12) and a cable (24) releasably connectable with each other, the main body (12) being releasably connectable to a direct current (DC) power source and having a USB receptacle (20) electrically connectable with the DC power source. The cable (24) includes a USB plug (26) releasably connectable with the USB receptacle (20) to establish electrical connection and data communication there-between and a connector (30) electrically connected with the USB plug (26). The power supply is operable in a detached mode in which the main body (12) is out of connection with the cable (24) and in an attached mode in which the main body (12) is releasably connected with the cable (24). The power supply is adapted, when in the attached mode, to automatically change the voltage of a DC power output from the connector (30).

Abstract: A signal modulating interface for a solid state electronic device includes an input arranged to receive a control signal from a driver arranged to control the solid state electronic device, and a signalling module connected to the input wherein the signalling module is arranged to generate a modulated control signal by eliminating unwanted triggering signal portions capable of false triggering the solid state electronic device from the control signal for transmission to the solid state electronic device.

Abstract: A power factor correction circuit for a power electronic system comprising a series-pass device arranged to control an input characteristic of a power converter, and a control mechanism arranged to control an operation of the series-pass device during a power conversion process, so as to increase a power factor of the power electronic system and/or to reduce a harmonic distortion generated by the power converter to an electrical current supplied by a power source in the power electronic system.

Abstract: An input filter for a power electronic system includes a series-pass device arranged to control an input characteristic of a power converter, and a control mechanism arranged to control an operation of the series-pass device during a power conversion process, so as to filter a noise signal generated by the power converter from reaching a power source of the power electronic system.

Abstract: A current control apparatus arranged to regulate an electric current flowing between a load and an external electric circuit includes a current control loop having a current regulator arranged to manipulate an amount of the electric current flowing between the load and the external electric circuit; and a voltage control loop having a voltage regulator arranged to manipulate a voltage across the current regulator.

Abstract: An apparatus facilitating luminosity uniformity across organic light emitting diode (OLED) device is provided. In one embodiment, the apparatus can include an organic light emitting diode (OLED) device including: an anode; a semiconductor material coupled to the anode; and a cathode coupled to the semiconductor material. The apparatus can also include a hollow heat sink coupled to the cathode and configured to reduce a temperature of the OLED device resulting in a first temperature of the OLED device being a first value in a first region of the OLED device and a second temperature of the OLED device being a second value in a second region of the OLED device. A temperature distribution characterized by a change in temperature from the first temperature to the second temperature to a third temperature is approximately ?-shaped from the first region to the second region to the third region.

Abstract: An electrical load driving apparatus comprising a thyristor circuit arranged to control a transmission of electric power to an electrical load, wherein the thyristor circuit is connected to a conversion module arranged to convert a characteristic of the thyristor circuit to operate with a load characteristic of the electrical load.