Inrush current protection circuit with noise immune latching circuit

    公开(公告)号:US12034295B2

    公开(公告)日:2024-07-09

    申请号:US17356095

    申请日:2021-06-23

    申请人: APPLETON GRP LLC

    IPC分类号: H02H9/00 H02H9/02 H02M1/36

    CPC分类号: H02H9/001 H02H9/025 H02M1/36

    摘要: A device comprises a processor, a memory for storing instruction code that is executable by the processor, and power supply circuitry. The power supply circuitry is in communication with the processor. The power supply circuitry comprises voltage regulator circuitry, a capacitor, a current limiter, and a switch. The voltage regulator circuitry comprises an input electrically coupled to a voltage source and an output configured to provide a regulated voltage output. The capacitor is configured to store energy derived from the voltage source. The capacitor comprises a first node electrically coupled with the output of the voltage regulator circuitry. The current limiter is in electrical communication with a second node of the capacitor and configured to limit inrush current through the capacitor during a start-up phase of the power supply circuitry. The switch circuit is in electrical communication with the second node of the capacitor. Capacitor current flows through the switch when the switch circuit is in an ON state, substantially bypassing the current limiter. The switch is transitioned to the ON state when a particular control signal is applied to the switch circuit. The switch circuit is configured to remain in the ON state when the particular control signal is no longer applied to the switch circuit.

    Voltage source kickstart circuit for powering integrated circuits

    公开(公告)号:US11736103B2

    公开(公告)日:2023-08-22

    申请号:US17349615

    申请日:2021-06-16

    申请人: Appleton Grp LLC

    IPC分类号: H03K17/22 G01R19/165 G06F1/28

    摘要: A system is described. The system includes a control transistor, a voltage source, a feedback node connected between a drain of the control transistor and the voltage source, a plurality of resistors connected between the voltage source and ground, and a control node connected to a gate of the control transistor. The resistors include a first series-connected set of resistors associated with the control transistor being biased and a second series-connected set of resistors associated with the control transistor being unbiased. During a startup period, the control node is configured to bias the control transistor to select the first series-connected set of resistors, thereby increasing a voltage level of the voltage source to a boosted VCC voltage. After the startup period, the control node is configured to unbias the control transistor to select the second series-connected set of resistors, thereby decreasing the boosted VCC voltage to a normal VCC voltage.

    Voltage Source Kickstart Circuit for Powering Integrated Circuits

    公开(公告)号:US20220407509A1

    公开(公告)日:2022-12-22

    申请号:US17349615

    申请日:2021-06-16

    申请人: Appleton Grp LLC

    IPC分类号: H03K17/22 G06F1/28 G01R19/165

    摘要: A system is described. The system includes a control transistor, a voltage source, a feedback node connected between a drain of the control transistor and the voltage source, a plurality of resistors connected between the voltage source and ground, and a control node connected to a gate of the control transistor. The resistors include a first series-connected set of resistors associated with the control transistor being biased and a second series-connected set of resistors associated with the control transistor being unbiased. During a startup period, the control node is configured to bias the control transistor to select the first series-connected set of resistors, thereby increasing a voltage level of the voltage source to a boosted VCC voltage. After the startup period, the control node is configured to unbias the control transistor to select the second series-connected set of resistors, thereby decreasing the boosted VCC voltage to a normal VCC voltage.

    PROVIDING INDUSTRIAL NETWORK RELIABILITY USING LUMINAIRES

    公开(公告)号:US20220330407A1

    公开(公告)日:2022-10-13

    申请号:US17333943

    申请日:2021-05-28

    申请人: APPLETON GRP LLC

    摘要: A luminaire which provides illumination (in some cases, in a coordinated manner with other nodes of a lighting network) in an industrial environment is further configured to serve as a node of a wireless process control or industrial network, which may be a mesh and/or time-synchronized wireless network. Upon detecting a loss of mains power and/or other triggering condition, the luminaire node allocates an amount of available battery power to maintain the routing of process control messages, and allocates at least some of a remaining amount of available battery power (if any) for performing lighting activities such as driving illumination and/or lighting-related communications. The allocations for (e.g., the relative priorities of) support for process control and support for lighting activities may be based on an allocation configuration and/or based on instructions received from other components of the process control network and/or the lighting network, which may include user interface devices.

    Housing for electrical components

    公开(公告)号:US11470730B2

    公开(公告)日:2022-10-11

    申请号:US16776274

    申请日:2020-01-29

    申请人: Appleton Grp LLC

    IPC分类号: H05K5/00 H02B1/32 H02B1/38

    摘要: The present disclosure envisages a housing (1000). The housing (1000) has an operative upper compartment (200) and an operative lower compartment (100). A first lid (110) and a second lid (210) cover the lower and the upper compartments (100, 200) respectively. The lid (210) is openable. A panel (400) is configured to be inserted between the lower compartment (100) and the upper compartment (200) thus forming a partition between the compartments. The housing (1000) of the present disclosure, when utilized for housing data distribution elements and electrical power distribution elements separately in its compartments, provides safe access to the data distribution elements and prevents risk of touching live electrical components.

    Reconfigurable communication interface for a device

    公开(公告)号:US11455269B1

    公开(公告)日:2022-09-27

    申请号:US17328567

    申请日:2021-05-24

    申请人: APPLETON GRP LLC

    IPC分类号: G06F13/40 G06F1/26 G06F13/42

    摘要: An interface circuit that facilitates communicating information between a first system and a second system comprises a first group of ports, a second group of ports, and routing circuitry. The first group of ports is configured to be electrically coupled to the first system. The second group of ports is configured to be electrically coupled to the second system. The routing circuitry is electrically coupled to the first group of ports and the second group of ports. The routing circuitry is configured to facilitate communicating first information applied to a first port of the first group of ports to a pair of ports of the second group of ports. The routing circuitry is further configured to facilitate communicating second information between the pair of ports of the second group of ports and a pair of ports of the first group of ports when a particular signal is applied to a particular port of the second group of ports.

    Event indications of hazardous environment luminaires using visual sequences

    公开(公告)号:US11328564B2

    公开(公告)日:2022-05-10

    申请号:US16738898

    申请日:2020-01-09

    申请人: APPLETON GRP LLC

    IPC分类号: G08B5/38 G08B21/02

    摘要: A luminaire whose primary operation is to provide ambient or focused lighting in a hazardous environment is further configured to communicate, within the hazardous environment, alert and/or detected events or conditions via visual sequences. Different visual sequences uniquely identify respective alerts and/or detected conditions, which may include conditions occurring at the luminaire and/or conditions occurring within the hazardous environment. Different visual sequences are defined by respective blink sequences stored in a blink sequence library at the luminaire. Blink sequences are configurable, are distinguished by different amplitudes, frequencies, duty cycles, and other energization/de-energization waveform characteristics, and are applied to one or more illumination sources of the luminaire to thereby generate corresponding visual sequences in the hazardous environment. Visual sequences generated by hazardous environment luminaires allow personnel within the hazardous environment to be informed or alerted to critical conditions upon their occurrences, even without the use of a portable computing device.

    Smart luminaire group control using intragroup communication

    公开(公告)号:US11232684B2

    公开(公告)日:2022-01-25

    申请号:US16786219

    申请日:2020-02-10

    申请人: APPLETON GRP LLC

    摘要: A smart luminaire system in which a primary luminaire controls and/or communicates with a set of one or more secondary luminaires may be disposed in a hazardous environment, such as an industrial process plant, manufacturing facility, oil refinery, etc. The primary luminaire may send driving commands to the set of secondary luminaires via an analog portion of a hybrid wired communication interface, and the driving commands may cause a driver of a second luminaire to energize on-board illumination source(s) at various intensities. The primary luminaire may send and/or receive administrative messages to/from the secondary luminaires via a digital portion of its hybrid wired communication interface. The smart luminaire system may be a stand-alone system, or may communicate with a controller or back-end system via a wireless communication interface of the primary luminaire, e.g., to receive control instructions and/or to send consolidated administrative messages on behalf of the smart luminaire system.