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Patent

Starting current limitation

Haas Günter, +1 more
TLDR
In this paper, a method and a circuit arrangement for limiting the starting current for intermediate voltage circuits that have at least one storage capacitor was proposed, which relates to the method and the circuit arrangement used in this paper.
Abstract: 
The invention relates to a method and to a circuit arrangement for limiting the starting current for intermediate voltage circuits that have at least one storage capacitor

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Patent

Led driving circuit

Shunji Egawa, +1 more
TL;DR: In this paper, the authors proposed an LED driving circuit that switches the connection of LED blocks in accordance with the supply voltage and the Vf specific to individual LEDs contained in each LED block.
Patent

Integrated regenerative AC drive with solid state precharging

Jeremiah Kopiness, +2 more
TL;DR: In this paper, integrated AC regenerative motor drives and operating methods are presented in which a precharging circuit is provided with an IGBT, a diode and a parallel current limiting component in an intermediate DC circuit between a switching rectifier and an output inverter, and the drive is operated in one of three modes for motoring, regenerating and precharging.
Patent

Electronic ballast having a flyback cat-ear power supply

Mark S. Taipale, +2 more
TL;DR: In this article, an electronic ballast for driving a gas discharge lamp includes a rectifier to convert an AC mains input voltage to a rectified voltage, a valley-fill circuit for producing a DC bus voltage, an inverter for converting the dc bus voltage to high-frequency AC voltage for driving the lamp, a control circuit for controlling the inverter, and a flyback cat-ear power supply for supplying current to the inverters when the rectification voltage is less than a predetermined level.
Patent

Method and apparatus for active inrush current control for AC to DC converters

Vijay Gangadhar Phadke
TL;DR: In this article, an apparatus and corresponding method for controlling inrush current in an AC-DC power converter by providing a control circuit to limit inrush currents efficiently during cold startup, warm startup, and power line disturbance conditions.
Patent

Power Supply with Current Limiting Circuits

Chung-Hang Peng
TL;DR: In this article, a power supply (200 ) is provided having a plurality of independent current limiting circuits, and a first current limiting circuit (6 ) provides protection against a short circuit or other extraneous load conditions, while the second circuit, using a trace on a PCB as a sensing element, is programmable on the basis of a time constant and a current level.