Surge protector
    1.
    发明授权

    公开(公告)号:US11862966B2

    公开(公告)日:2024-01-02

    申请号:US17451520

    申请日:2021-10-20

    CPC classification number: H02H9/04 H02H3/22 H02H3/24

    Abstract: According to an embodiment, a surge protector includes a capacitor, a switch, and a first transistor. The capacitor charges based on an input power to the surge protector. The switch turns on when the capacitor is charged to a charge threshold. The surge protector outputs the input power when the switch is turned on. The first transistor turns on when a voltage of the input power exceeds a first input voltage threshold such that the capacitor discharges to below the charge threshold and such that the switch turns off. The surge protector stops outputting the input power when the switch is turned off.

    THREE-PHASE AC LOAD UNBALANCE DETECTION AND BALANCING METHOD AND CIRCUIT

    公开(公告)号:US20230097568A1

    公开(公告)日:2023-03-30

    申请号:US17484847

    申请日:2021-09-24

    Abstract: A method comprises, at a power balancing circuit for three-phase AC power: feeding three power phases to respective loads; measuring power drain on the three power phases by the respective loads; based on measuring, detecting an unbalanced power drain across the three power phases due to a relatively light power drain on one or more lightly loaded power phases and a relatively high power drain on one or more heavily loaded power phases; computing an amount of power to be drained from the one or more lightly loaded power phases and to be fed to the one or more heavily loaded power phases to balance the power drain across the three power phases; and transferring the amount of power from the one or more lightly loaded power phases to the one or more heavily loaded power phases to balance the power drain across the three power phases.

    Active AC power loss detection
    3.
    发明授权

    公开(公告)号:US10473729B2

    公开(公告)日:2019-11-12

    申请号:US15261860

    申请日:2016-09-09

    Abstract: To reduce the rate at which a false alternating current (“AC”) loss alarming signal is generated, but at the same time detect an actual AC loss situation in a timely manner, the disclosed method describes an AC line power loss detection and active verification method. If the AC line input voltage dips momentarily lower than a standard sine wave amplitude, the AC line may not be considered lost as long as it still has energy to drive a load. The method inserts a momentary load across the AC line and compares the AC line voltage before and after the extra load is applied. If the AC power is present, this extra loading will increase the AC loading current momentarily, but will not affect the AC line voltage. However, if the AC power is lost, such loading will lower the AC line voltage, indicating a loss of power.

    ACTIVE AC POWER LOSS DETECTION
    4.
    发明申请

    公开(公告)号:US20180074136A1

    公开(公告)日:2018-03-15

    申请号:US15261860

    申请日:2016-09-09

    CPC classification number: G01R31/42 G01R19/16547 G01R31/026 H02J3/00 H02J13/00

    Abstract: To reduce the rate at which a false alternating current (“AC”) loss alarming signal is generated, but at the same time detect an actual AC loss situation in a timely manner, the disclosed method describes an AC line power loss detection and active verification method. If the AC line input voltage dips momentarily lower than a standard sine wave amplitude, the AC line may not be considered lost as long as it still has energy to drive a load. The method inserts a momentary load across the AC line and compares the AC line voltage before and after the extra load is applied. If the AC power is present, this extra loading will increase the AC loading current momentarily, but will not affect the AC line voltage. However, if the AC power is lost, such loading will lower the AC line voltage, indicating a loss of power.

    MODULAR POWER SUPPLY ARCHITECTURE OPTIMIZED FOR FLAT EFFICIENCY ACROSS LOADINGS

    公开(公告)号:US20230344329A1

    公开(公告)日:2023-10-26

    申请号:US17724985

    申请日:2022-04-20

    CPC classification number: H02M1/0048 H02M1/0043

    Abstract: A control method improves the efficiency profile of a power supply across a wide range of output loading. The method includes obtaining a measure of output power for a power supply, which includes one or more output modules and an auxiliary power supply. The method determines whether a maximum power rating of the auxiliary power supply is sufficient to provide the measure of output power. Responsive to a determination that the maximum power rating of the auxiliary power supply is sufficient to provide the measure of output power, the controller of the power supply directs the auxiliary power supply to provide the output power.

    Active AC power loss detection
    6.
    发明授权

    公开(公告)号:US11249144B2

    公开(公告)日:2022-02-15

    申请号:US16901989

    申请日:2020-06-15

    Abstract: To reduce the rate at which a false alternating current (“AC”) loss alarming signal is generated, but at the same time detect an actual AC loss situation in a timely manner, the disclosed method describes an AC line power loss detection and active verification method. If the AC line input voltage dips momentarily lower than a standard sine wave amplitude, the AC line may not be considered lost as long as it still has energy to drive a load. The method inserts a momentary load across the AC line and compares the AC line voltage before and after the extra load is applied. If the AC power is present, this extra loading will increase the AC loading current momentarily, but will not affect the AC line voltage. However, if the AC power is lost, such loading will lower the AC line voltage, indicating a loss of power.

    Active AC power loss detection
    7.
    发明授权

    公开(公告)号:US10718822B2

    公开(公告)日:2020-07-21

    申请号:US16600361

    申请日:2019-10-11

    Abstract: To reduce the rate at which a false alternating current (“AC”) loss alarming signal is generated, but at the same time detect an actual AC loss situation in a timely manner, the disclosed method describes an AC line power loss detection and active verification method. If the AC line input voltage dips momentarily lower than a standard sine wave amplitude, the AC line may not be considered lost as long as it still has energy to drive a load. The method inserts a momentary load across the AC line and compares the AC line voltage before and after the extra load is applied. If the AC power is present, this extra loading will increase the AC loading current momentarily, but will not affect the AC line voltage. However, if the AC power is lost, such loading will lower the AC line voltage, indicating a loss of power.

    Battery charging cut-off circuit
    8.
    发明授权

    公开(公告)号:US11909255B2

    公开(公告)日:2024-02-20

    申请号:US17702944

    申请日:2022-03-24

    CPC classification number: H02J9/061 H02J7/00309 H02J7/00306

    Abstract: In one embodiment, a battery backup unit (BBU) cut-off and recharge circuit includes: a first transistor, a power entry connection connected to a main power supply, where power from the power entry connection flows to application circuits for an electronic device, and the first transistor is positioned between a BBU and the power entry connection, and a microcontroller, where the microcontroller is operative to: detect a loss of power from the main power supply, turn on the first transistor to enable the BBU to discharge through the power entry connection to application circuits, detect a status of charge (SOC) for the BBU, and upon detecting that the SOC is under a predefined threshold, set the BBU cut-off and recharge circuit to a lockdown state by turning off the first transistor.

    MODULAR POWER SUPPLY ARCHITECTURE OPTIMIZED FOR FLAT EFFICIENCY ACROSS LOADINGS

    公开(公告)号:US20230361668A1

    公开(公告)日:2023-11-09

    申请号:US18353536

    申请日:2023-07-17

    CPC classification number: H02M1/0048 H02M1/0043

    Abstract: A control method improves the efficiency profile of a power supply across a wide range of output loading. The method includes obtaining a measure of output power for a power supply, which includes one or more output modules and an auxiliary power supply. The method determines whether a maximum power rating of the auxiliary power supply is sufficient to provide the measure of output power. Responsive to a determination that the maximum power rating of the auxiliary power supply is sufficient to provide the measure of output power, the controller of the power supply directs the auxiliary power supply to provide the output power.

    ACTIVE AC POWER LOSS DETECTION
    10.
    发明申请

    公开(公告)号:US20200309861A1

    公开(公告)日:2020-10-01

    申请号:US16901989

    申请日:2020-06-15

    Abstract: To reduce the rate at which a false alternating current (“AC”) loss alarming signal is generated, but at the same time detect an actual AC loss situation in a timely manner, the disclosed method describes an AC line power loss detection and active verification method. If the AC line input voltage dips momentarily lower than a standard sine wave amplitude, the AC line may not be considered lost as long as it still has energy to drive a load. The method inserts a momentary load across the AC line and compares the AC line voltage before and after the extra load is applied. If the AC power is present, this extra loading will increase the AC loading current momentarily, but will not affect the AC line voltage. However, if the AC power is lost, such loading will lower the AC line voltage, indicating a loss of power.

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