利索-全球专利检索

  1. Login
  2. Sign Up

Search Results

101 records (took 0.013 seconds)

    POWER SUPPLY ELECTRONIC CIRCUIT
    22.
    发明公开
    POWER SUPPLY ELECTRONIC CIRCUIT 审中-公开

    公开(公告)号：EP3105832A4

    公开(公告)日：2017-10-11

    申请号：EP14882711

    申请日：2014-02-14

    Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

    Inventor： GU JINGXU

    IPC: H02J4/00 ,  H02M3/22

    CPC classification number: H02M3/04 ,  H02M1/14 ,  H02M1/15 ,  H02M1/32 ,  H02M1/44 ,  H02M3/155 ,  H02M3/33507 ,  H02M2001/0019 ,  H02M2001/007 ,  H02M2001/008

    Abstract: A power supply electronic circuit is provided. The power supply electronic circuit comprises: an intermediate bus converter (IBC), arranged to convert a voltage inputted to the IBC to an intermediate bus voltage on an intermediate bus; at least one direct current to direct current (DC-DC) or point of load (POL) converter, connected to the intermediate bus and arranged to convert the intermediate bus voltage to a voltage for feeding a load; and a capacitor tank connected to the intermediate bus and arranged as hold up capacitor tank to preserve power supply to the load. The IBC comprises a current ripple control circuit for suppressing current ripple in an input of the power supply electronic circuit.

    HIGH-FREQUENCY SWITCH POWER SUPPLY AND METHOD FOR DETECTING HIGH-FREQUENCY CURRENT
    26.
    发明公开
    HIGH-FREQUENCY SWITCH POWER SUPPLY AND METHOD FOR DETECTING HIGH-FREQUENCY CURRENT 审中-公开
    HIGH FREQUENZS-POWER FOR检测高频功率供应和方法

    公开(公告)号：EP2728728A4

    公开(公告)日：2015-04-15

    申请号：EP13739926

    申请日：2013-04-11

    Applicant: HUAWEI TECH CO LTD

    Inventor： LIU XUJUN

    IPC: H02M3/22 ,  G01R15/18 ,  G01R19/00 ,  H02M1/00 ,  H02M3/337

    CPC classification number: H02M3/3376 ,  G01R15/183 ,  H02M2001/0009

    Abstract: The present invention provides a high-frequency switch mode power supply and a method for detecting a high-frequency current. The system includes a power input circuit, a power output circuit, a power transformer, and a current detecting circuit. The current detecting circuit includes: a current transformer, which includes a primary winding and at least one secondary winding, where the primary winding is connected in series to an impedor to serve as a first impedance branch connected in series in the loop formed of the power input circuit and the power transformer; at least one second impedance branch, connected in parallel to the first impedance branch and then connected in series in the loop; and a detecting unit, connected to the secondary winding and configured to detect the current output by the secondary winding. The present invention can reduce the size of a current detecting circuit.

    LED POWER SOURCE WITH OVER-VOLTAGE PROTECTION
    27.
    发明公开
    LED POWER SOURCE WITH OVER-VOLTAGE PROTECTION 审中-公开
    带浪涌保护LED光源功率

    公开(公告)号：EP2781011A1

    公开(公告)日：2014-09-24

    申请号：EP12788333.8

    申请日：2012-10-10

    Applicant: General Electric Company

    Inventor： YAO, Gang

    IPC: H02M3/22 ,  H02M3/28 ,  H05B41/282

    CPC classification number: H05B33/0815 ,  H02M1/32 ,  H02M1/4258 ,  H05B33/089 ,  Y02B20/341 ,  Y02B20/348 ,  Y02B70/126

    Abstract: A resonant DC-DC converter used to drive an LED array includes a half-bridge converter configured to receive DC input power and produce a square wave voltage. A resonant tank circuit that includes an inductive element, a first resonance capacitor, and a second resonance capacitor, is coupled to the half-bridge converter to receive the square wave voltage such that a generally sinusoidal AC voltage is produced across the second resonance capacitor. An output transformer with a primary winding and one or more secondary windings, is coupled in parallel to the second resonance capacitor, and a clipping circuit is coupled to the primary winding such that the voltage across the primary winding does not substantially exceed the voltage of the DC input power. An output rectifier is coupled to the one or more secondary windings of the output transformer and is configured to produce a generally DC output voltage.

    Voltage sensing in isolated DC/DC converters
    28.
    发明公开
    Voltage sensing in isolated DC/DC converters 审中-公开
    在隔离式DC / DC转换器的电压测量

    公开(公告)号：EP2690774A3

    公开(公告)日：2014-07-23

    申请号：EP13176487.0

    申请日：2013-07-15

    Applicant: Hamilton Sundstrand Space Systems International, Inc.

    Inventor： Ohnemus, Jason A. ,  Fox, David A.

    IPC: H02M3/337 ,  H02M3/335 ,  H02M3/22

    CPC classification number: H02M3/3376 ,  H02M3/3353

    Abstract: A system for sensing voltage in an isolated converter includes an input circuit (12) isolated from an output circuit (14) using a first transformer, the first transformer haying a primary coil (24) and a secondary coil (34), wherein the output circuit includes an output inductor and an output capacitor, and wherein the input circuit includes a power source (22) that provides power to the output circuit through the first transformer; a feedback winding (46) coupled to the output inductor to form a second transformer; and a monitor circuit (50) that calculates a voltage across the output capacitor using a voltage across the feedback winning, a voltage across the primary coil of the first transformer, a turns ratio of the first transformer, and a turns ratio of the second transformer in order to provide feedback to control the input circuit.

Patent Agency Ranking