Load Control Device for High-Efficiency Loads

    公开(公告)号:US20210051777A1

    公开(公告)日:2021-02-18

    申请号:US17086915

    申请日:2020-11-02

    Abstract: A load control device for controlling power delivered from an AC power source to an electrical load may comprise a thyristor, a gate current path, and a control circuit. The control circuit may be configured to control the gate current path to conduct a pulse of gate current through a gate terminal of the thyristor to render the thyristor conductive at a firing time during a half-cycle of the AC power source. The control circuit may operate in a first gate drive mode in which the control circuit renders the gate current path non-conductive after a pulse time period from the firing time. The control circuit may operate in a second gate drive mode in which the control circuit maintains the gate current path conductive after the pulse time period during the half-cycle.

    CONTROL DEVICE HAVING AN INTEGRAL REFLECTING STRUCTURE FOR A SENSING CIRCUIT

    公开(公告)号:US20210045216A1

    公开(公告)日:2021-02-11

    申请号:US17078938

    申请日:2020-10-23

    Abstract: A wall-mounted keypad may include a light detector circuit located inside the keypad that is configured to measure an ambient light level in a space. The light detector circuit may receive ambient light through an aperture that is hidden from view by the keypad. The keypad may include a reflector for directing ambient light onto the light detector circuit. The keypad may include an enclosure that houses the light detector circuit. The enclosure may define a recess that exposes at least a portion of the light detector circuit. The enclosure may include a reflector that may focus ambient light received through the aperture onto the light detector circuit. The keypad may include a control circuit that may be configured to illuminate the indicia of respective buttons of the control device in response to actuations of the one or more buttons, in accordance with the measured ambient light level.

    LOAD CONTROL DEVICE FOR A LIGHT-EMITTING DIODE LIGHT SOURCE

    公开(公告)号:US20210045211A1

    公开(公告)日:2021-02-11

    申请号:US17083262

    申请日:2020-10-28

    Abstract: A load control device for controlling power delivered from a power source to an electrical load may comprise a control circuit configured to control the load regulation circuit to control the power delivered to the electrical load. The control circuit may be configured to operate in an AC mode when an input voltage is an AC voltage and in a DC mode when the input voltage is a DC voltage. The control circuit may be configured to disable the power converter in the DC mode. The control circuit may be configured to render a controllable switching circuit conductive in the AC mode, and non-conductive in the DC mode. The rectifier circuit may be configured to rectify the input voltage to generate a rectified voltage when the input voltage is an AC voltage, and to pass through the input voltage when the input voltage is a DC voltage.

    SYSTEMS AND METHODS FOR CONTROLLING COLOR TEMPERATURE

    公开(公告)号:US20210045208A1

    公开(公告)日:2021-02-11

    申请号:US17081981

    申请日:2020-10-27

    Abstract: Methods and systems may be used for controlling the color temperature of one or more light sources (e.g., discrete-spectrum light sources) based on fixture capability information. Fixture capability information may be obtained using a configuration tool. The fixture capability information may be determined by the configuration tool, and the fixture capability information determined by the configuration tool may be stored and/or processed. The fixture may have a memory for storing the fixture capability information. The fixture capability information may also be stored in a remote network device. A system controller may obtain the fixture capability information from the fixture or the remote control device. The system controller may generate control instructions based on the fixture capability information and send the control instructions to the fixtures.

    CONFIGURING COLOR CONTROL FOR LIGHTING DEVICES

    公开(公告)号:US20210029795A1

    公开(公告)日:2021-01-28

    申请号:US16939027

    申请日:2020-07-26

    Abstract: In an auto vibrancy mode, a vibrancy value for a lighting load may be automatically determined based on a selected color setting for the lighting load. The automatically determined vibrancy value may also be configured to emit light from the lighting load at or above a target CRI value for the selected color setting. The selected color setting may be a CCT value on the black-body curve or an x-y chromaticity value. If the selected color setting is CCT value on the black-body curve, the automatically determined vibrancy value may be a pre-defined vibrancy value that is configured to emit light from the lighting load at or above the target CRI value for the selected CCT value. If the selected color setting is an x-y chromaticity value, the automatically determined vibrancy value may be based on the distance between the selected x-y chromaticity value and the black-body curve.

    Method and Apparatus for Determining a Target Light Intensity From a Phase-Control Signal

    公开(公告)号:US20210029790A1

    公开(公告)日:2021-01-28

    申请号:US17066649

    申请日:2020-10-09

    Abstract: A dimmable ballast circuit for a compact fluorescent lamp controls the intensity of a lamp tube in response to a phase-control voltage received from a dimmer switch. The ballast circuit comprises a phase-control-to-DC converter circuit that receives the phase-control voltage, which is characterized by a duty cycle defining a target intensity of the lamp tube, and generates a DC voltage representative of the duty cycle of the phase-control voltage. Changes in the duty cycle of the phase-control voltage that are below a threshold amount are filtered out by the converter circuit, while intentional changes in the duty cycle of the phase-control voltage are reflected in changes in the target intensity level and thereby the intensity level of the lamp tube.

    PROVISIONING MULTIPLE CLOUD-BASED SERVICES TO CONTROL DEVICES

    公开(公告)号:US20210029202A1

    公开(公告)日:2021-01-28

    申请号:US16938472

    申请日:2020-07-24

    Abstract: Systems and methods are disclosed herein for a provisioning service, such as a broker provisioner service (BPS), for provisioning a device (e.g., such as a control device and/or a mobile device) to one or more remote servers. The device may send a connection request message to the BPS to be provisioned with the remote servers (e.g., one or more services offered by the remote servers). The BPS may determine one or more services and/or brokers associated with the corresponding remote servers with which the device may be provisioned, e.g., based on provisioning rules. The BPS may apply the provisioning rules to determine the appropriate services and/or brokers and the corresponding remote servers with which the device may be provisioned. The BPS may send a provision message to the device. The device may establish communications with the provisioned services and/or brokers and/or the corresponding remote servers.

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