Testing device, overcurrent protector, and method of testing an overcurrent protector

    公开(公告)号:US11418020B2

    公开(公告)日:2022-08-16

    申请号:US17374747

    申请日:2021-07-13

    Abstract: Testing device for testing an overcurrent protector, and method of operating the same. First and second switches are provided for connecting the first and second terminals of the overcurrent protector to first and second capacitors, respectively. The first and second capacitors are pre-charged to first and second voltages, where the second voltage is lower than the first. A controller switches the first and second switches to their test positions, which establishes a current path from the first capacitor to the second capacitor through the overcurrent protector. The first and second voltages are selected so that the peak current that would be generated in the current path is greater than the overcurrent threshold of the overcurrent protector.

    DEVICE AND METHOD FOR SELF-ADJUSTING AN ELECTRICAL THRESHOLD FOR DETECTING A POWER FAILURE

    公开(公告)号:US20220283205A1

    公开(公告)日:2022-09-08

    申请号:US17738391

    申请日:2022-05-06

    Abstract: A device for self-adjusting an electrical threshold includes a framing unit that compares a setpoint signal representative of the supply signal to a plurality of successive intervals of reference signals that increase in value according to a geometric sequence. The framing unit generates an output based on the interval bounding the setpoint signal, wherein the output controls a switch that is configured to provide one of the plurality of reference signals as an output, wherein the output reference signal is representative of the electrical detection threshold.

    Backup power supply system
    3.
    发明授权

    公开(公告)号:US11362537B2

    公开(公告)日:2022-06-14

    申请号:US17001744

    申请日:2020-08-25

    Abstract: A balancing system for balancing respective voltages of N consecutively connected capacitors during charging or discharging includes balancing units, each having a pair of associated switches and an electromagnetic coil. An inter-switch junction is connected to an inter-capacitor junction of a corresponding group of capacitors through the electromagnetic coil. A control and generation circuit generates PWM control signals and transmits a generated PWM control signal to each of the switches. The PWM control signals have fixed duty cycles that do not vary temporarily during charging or discharging of the N capacitors. The duty cycles of two PWM control signals transmitted to two associated switches are complementary for each balancing unit.

    Testing Device, Overcurrent Protector, and Method of Testing an Overcurrent Protector

    公开(公告)号:US20220102959A1

    公开(公告)日:2022-03-31

    申请号:US17374747

    申请日:2021-07-13

    Abstract: Testing device for testing an overcurrent protector, and method of operating the same. First and second switches are provided for connecting the first and second terminals of the overcurrent protector to first and second capacitors, respectively. The first and second capacitors are pre-charged to first and second voltages, where the second voltage is lower than the first. A controller switches the first and second switches to their test positions, which establishes a current path from the first capacitor to the second capacitor through the overcurrent protector. The first and second voltages are selected so that the peak current that would be generated in the current path is greater than the overcurrent threshold of the overcurrent protector.

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