ORING FET CONTROL CIRCUIT AND METHOD
    82.
    发明公开

    公开(公告)号:US20240113703A1

    公开(公告)日:2024-04-04

    申请号:US18371371

    申请日:2023-09-21

    CPC classification number: H03K17/063 H03K17/04106 H03K17/302

    Abstract: An ORing FET control circuit and method are provided. The circuit includes an ORing FET, a comparator, first, second and third resistors, a first capacitor, a diode and a driving unit. The positive and negative input terminals of the comparator are electrically connected to the input and output voltages. The first resistor, the second resistor, the first capacitor, and the third resistor are electrically connected in series between a reference voltage and a ground terminal sequentially. The reference voltage is lower than a voltage at the positive input terminal. When the input voltage is lower than the output voltage, if a voltage across the ORing FET is larger than a threshold, the comparator outputs a driving signal at low level, and correspondingly the driving unit turns off the ORing FET. The threshold depends on resistances of the first and second resistors.

    TOTEM-POLE PFC CIRCUIT AND CONTROL METHOD THEREOF

    公开(公告)号:US20240113617A1

    公开(公告)日:2024-04-04

    申请号:US18372010

    申请日:2023-09-22

    CPC classification number: H02M1/4233 H02M1/0085 H02M1/081

    Abstract: A totem-pole PFC circuit and a control method thereof are provided. The circuit includes an AC power source, first and second bridge arms and a controller. The first bridge arm includes first and second switches electrically connected in series with a connection node electrically connected to a first terminal of the AC power source. The second bridge arm includes third and fourth switches electrically connected in series with a connection node electrically connected to a second terminal of the AC power source. When a potential at the first terminal is higher than a potential at the second terminal, the controller turns off the fourth switch if the L-phase voltage is lower than a first threshold voltage. When the potential at the first terminal is lower than the potential at the second terminal, the controller turns off the third switch if the L-phase voltage is higher than a second threshold voltage.

    SEALING MECHANISM
    85.
    发明公开
    SEALING MECHANISM 审中-公开

    公开(公告)号:US20240093786A1

    公开(公告)日:2024-03-21

    申请号:US18511624

    申请日:2023-11-16

    CPC classification number: F16J15/441 F16J15/022 H05K5/061

    Abstract: A sealing mechanism is provided, including a housing, a groove, and a sealing element. The housing includes a first member and a second member, and the groove is formed between the first and second members. The sealing element is formed in the groove by Low Pressure Molding (LPM) and surrounds at least one of the first and second members.

    Method of transmitting data and command through RS232 serial port

    公开(公告)号:US11928075B2

    公开(公告)日:2024-03-12

    申请号:US17846894

    申请日:2022-06-22

    Inventor: Yung-Liang Chang

    CPC classification number: G06F13/4282 G06F2213/0002

    Abstract: A method of transmitting data and command through an RS232 serial port incorporated with a user-end device and a server-end device connected through the RS232 serial port is disclosed and includes following steps: accumulating a value of a first counter of the user-end device and a value of a second counter of the server-end device whenever a data is transmitted from the server-end device to the user-end device; controlling the server-end device to stop transmitting the data and to wait when both of the two values reach a triggering threshold; controlling the user-end device to transmit a control command to the server-end device through the RS232 serial port while the server-end device is waiting; and, resetting the first and the second counter and controlling the server-end device to restore to transmit the data to the user-end device after a waiting time is elapsed.

    DC/DC converter for decreasing power loss caused parasitic resistance and increasing equivalent capacitance of high-voltage side capacitor

    公开(公告)号:US11923772B2

    公开(公告)日:2024-03-05

    申请号:US17361568

    申请日:2021-06-29

    CPC classification number: H02M3/158 H02M1/0048

    Abstract: A DC/DC converter includes a high-voltage side, a low-voltage side, a high-voltage side capacitor and a power conversion circuit. The high-voltage side includes a high-voltage positive terminal and a high-voltage negative terminal. The low-voltage side includes a low-voltage positive terminal and a low-voltage negative terminal. The low-voltage negative terminal is electrically connected with the high-voltage negative terminal A first terminal of the high-voltage side capacitor is electrically connected with the high-voltage positive terminal. A second terminal of the high-voltage side capacitor is electrically connected with the low-voltage positive terminal. The power conversion circuit is electrically connected between the high-voltage side and the low-voltage side. The power conversion circuit includes at least one switch and at least one magnetic assembly.

    HUMAN MACHINE INTERFACE PANEL AND FIXING DEVICE THEREOF

    公开(公告)号:US20240068284A1

    公开(公告)日:2024-02-29

    申请号:US18202242

    申请日:2023-05-25

    CPC classification number: E05C19/188 F16B25/103

    Abstract: The present disclosure provides a human machine interface panel including a main body and a fixing device. The main body includes a housing and a first contact surface. The fixing device includes a base, a self-tapping screw and a bottom base. The base is detachably connected to the housing and has a mounting hole. The self-tapping screw penetrates through the mounting hole and has an interference fit to the mounting hole. The bottom base is disposed at an end of the self-tapping screw. By disposing a plate between the bottom base and the first contact surface, and tightening the self-tapping screw, the plate is clamped by the bottom base and the first contact surface. Consequently, the human machine interface panel is fixed to the plate.

    Antenna structure and wireless communication device

    公开(公告)号:US11916293B2

    公开(公告)日:2024-02-27

    申请号:US17450556

    申请日:2021-10-11

    CPC classification number: H01Q13/10 H01Q1/48

    Abstract: An antenna structure is provided, which includes a substrate, an antenna unit and a metal ground. The substrate includes a first surface and a second surface; the antenna unit disposed on the first surface includes a radiation part, a feeding part and a feeding line, where the feeding line includes a first transmission line and a second transmission line that are perpendicular to each other and connected to each other, and the first transmission line is connected to the radiation part via the feeding part; and the metal ground disposed on the second surface has an edge which is perpendicular to projection of the radiation part to the metal ground; and a resonance slot is disposed on the metal ground, and its position corresponds between projection of the second transmission line to the metal ground and the edge.

Patent Agency Ranking