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    Solid state relay harvesting power from load by measuring zero crossing
    1.
    发明授权
    Solid state relay harvesting power from load by measuring zero crossing 有权

    公开(公告)号：US12063032B2

    公开(公告)日：2024-08-13

    申请号：US18202372

    申请日：2023-05-26

    Applicant: Littelfuse, Inc.

    Inventor： Bret R. Howe

    IPC: H03K17/13 ,  H03K3/037 ,  H03K19/20

    CPC classification number: H03K17/13 ,  H03K3/037 ,  H03K19/20

    Abstract: A relay circuit, including a solid state relay switch, connected to a first relay line and to a charging capacitor, and connected to a second relay line. The relay circuit may also include a solid state relay control circuit, coupled between the charging capacitor and the solid state relay switch. The solid state relay control circuit may include a voltage detection circuit, having an input coupled to an output of the charging capacitor, and having an output arranged to generate a LOW voltage signal when a voltage level of the charging capacitor is below a low threshold value. The solid state relay control circuit may also include a zero crossing circuit, coupled to the first relay line and the second relay line, and having an output to generate a clock signal when a zero crossing event takes place between the first relay line and the second relay line.

    Solid state relay
    6.
    发明授权
    Solid state relay 有权

    公开(公告)号：US11522534B2

    公开(公告)日：2022-12-06

    申请号：US16889444

    申请日：2020-06-01

    Applicant: Zonit Structured Solutions, LLC

    Inventor： Steve Chapel ,  William Pachoud

    IPC: H03K17/13 ,  H03K17/687 ,  H05K1/02 ,  H05K3/30

    Abstract: A compact solid state relay (7) is provided. Solid state devices (74, 75), such as Triacs or Thyristors are used to implement the relay functionality. The device is at least partially enclosed in a housing that has pins for mounting on an electronics board. A number of “U” shaped jumpers (72) or other jumpers or wires are provided in the housing to act as heat sinks. A sub-miniature fan (70) is positioned to create an air flow over the heat sinks and dissipate heat from the device.

    METHOD OF TUNING LIGHT COLOR TEMPERATURE FOR LED LIGHTING DEVICE AND APPLICATION THEREOF
    7.
    发明申请
    METHOD OF TUNING LIGHT COLOR TEMPERATURE FOR LED LIGHTING DEVICE AND APPLICATION THEREOF 有权

    公开(公告)号：US20220255544A1

    公开(公告)日：2022-08-11

    申请号：US17725715

    申请日：2022-04-21

    Applicant: Vaxcel International Co., Ltd.

    Inventor： CHIA-TEH CHEN

    IPC: H03K17/13 ,  H03K17/94 ,  H05B39/08 ,  H05B45/20 ,  H05B47/19 ,  H05B47/13 ,  H05B45/37 ,  H05B45/10 ,  H05B47/105

    Abstract: A theory and a technical foundation for building a technical framework of a color temperature tuning technology are disclosed, composing a power allocation algorithm and a power allocation circuitry, wherein the power allocation algorithm is a software for designing a process of dividing and sharing a total electric power between at least a first LED load emitting light with a first color temperature CT1 and a second LED load emitting light with a second color temperature CT2 to generate at least one paired combination of a first electric power X allocated to the first LED load and a second electric power Y allocated to the second LED load to create at least one mingled light color temperature CTapp thru a light diffuser according to color temperature tuning formulas CTapp=CT1·X/(X+Y)+CT2·Y/(X+Y) and X+Y=constant; and the power allocation circuitry is a hardware designed for implementing the process.

    THYRISTOR CONTROL DEVICE
    8.
    发明申请
    THYRISTOR CONTROL DEVICE 有权

    公开(公告)号：US20220077850A1

    公开(公告)日：2022-03-10

    申请号：US17466604

    申请日：2021-09-03

    Applicant: STMicroelectronics (Tours) SAS

    Inventor： Romain PICHON ,  Yannick HAGUE

    IPC: H03K17/13 ,  H03K17/76

    Abstract: A control device includes a triac and a first diode that is series-connected between the triac and a first terminal of the device that is configured to be connected to a cathode gate of a thyristor. A second terminal of the control device is configured to be connected to an anode of the thyristor. The triac has a gate connected to a third terminal of the device that is configured to receive a control signal. The thyristor is a component part of one or more of a rectifying bridge circuit, an in-rush current limiting circuit or a solid-state relay circuit.

    Delta connected resonant turn off circuits
    9.
    发明授权
    Delta connected resonant turn off circuits 有权

    公开(公告)号：US11211816B1

    公开(公告)日：2021-12-28

    申请号：US17100044

    申请日：2020-11-20

    Applicant: ABB Schweiz AG

    Inventor： Veerakumar Bose ,  Thomas Kendzia, III ,  Christopher Alan Belcastro

    IPC: H02J9/06 ,  G06F1/26 ,  G06F1/28 ,  H03K17/72 ,  H03K17/13 ,  H03K17/04 ,  H02J3/00

    Abstract: A static transfer switch is provided for supplying power to a load alternately from two different power sources. Switching between the two power sources may occur within a fraction of one electrical cycle. In response to sensing degraded performance in the power source supplying the load, resonant turn off circuits connected directly to the main switches of two phases of the power source are actuated to commutate the respective main switches. The main switch of the third phase is commutated with one or more of the resonant turn off circuits through the delta side of a transformer connected to the three phases of the power source.

    METHOD OF TUNING LIGHT COLOR TEMPERATURE FOR LED LIGHTING DEVICE AND APPLICATION THEREOF
    10.
    发明申请
    METHOD OF TUNING LIGHT COLOR TEMPERATURE FOR LED LIGHTING DEVICE AND APPLICATION THEREOF 有权

    公开(公告)号：US20210305978A1

    公开(公告)日：2021-09-30

    申请号：US17341547

    申请日：2021-06-08

    Applicant: Vaxcel International Co., Ltd.

    Inventor： CHIA-TEH CHEN

    IPC: H03K17/13 ,  H03K17/94 ,  H05B39/08 ,  H05B45/20 ,  H05B47/19 ,  H05B47/13

    Abstract: A color temperature switching scheme for an LED lighting device is disclosed. The color temperature switching scheme comprises a plurality of different color temperature performances correspondingly generated by a plurality of different paired combinations of a first electric power allocated to a first LED load emitting a light with a first color temperature and a second electric power allocated to a second LED load emitting a light with a second color temperature such that a mingled color temperature between the first color temperature and the second color temperature can be generated thru a light diffuser. For tuning the mingled color temperature of the LED lighting device a reverse yet complementary power adjustment process for distributing a total electric power T between the first LED circuit and the second LED circuit is required such that a total light intensity remains essentially unchanged while the mingled color temperature is being adjusted.

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