公开(公告)号：US20240196498A1

公开(公告)日：2024-06-13

申请号：US18532346

申请日：2023-12-07

申请人： LX SEMICON CO., LTD.

发明人： Min Cheol KONG ,  Ji Hwan KIM

IPC分类号： H05B45/54 ,  H05B47/24 ,  H05K9/00

CPC分类号： H05B45/54 ,  H05B47/24 ,  H05K9/0067

摘要： A current source device for electrostatic discharge and a display device including the same are disclosed. The current source device includes a sourcing circuit including a first MOS transistor configured to transmit a current flowing from a pad to a first node in response to a current control voltage, and a second MOS transistor configured to transmit the current flowing from the first node to a ground in response to a bias voltage, and a control circuit including an amplifier configured to generate the current control voltage based on a setting voltage applied from an outside and a voltage of the first node, a first resistor disposed between an output terminal of the amplifier and a gate terminal of the first MOS transistor, and a first switch configured to transmit the bias voltage to a gate terminal of the second MOS transistor in response to a switching control signal.

公开(公告)号：US20240136807A1

公开(公告)日：2024-04-25

申请号：US18401002

申请日：2023-12-29

申请人： Aputure Imaging Industries Co., Ltd.

发明人： Yi HUANG ,  Xiangjun ZHOU ,  Yi XIE ,  Kun TONG

IPC分类号： H02H7/00 ,  H05B47/24

CPC分类号： H02H7/008 ,  H05B47/24

摘要： A power source circuit includes a first power source subcircuit. The first power source subcircuit includes a first overvoltage protection circuit, a first undervoltage protection circuit, a first drive circuit, and a first switching circuit. A cascade output result of the first over-voltage protection circuit and the first undervoltage protection circuit is used to control the first switching circuit for on-off control of the first power source subcircuit.

公开(公告)号：US20230422376A1

公开(公告)日：2023-12-28

申请号：US18212994

申请日：2023-06-22

申请人： Lutron Technology Company LLC

发明人： Horace C. Ho ,  Jason E. Lewis ,  David J. Knapp

IPC分类号： H05B47/10 ,  G01J3/46 ,  G01J3/50 ,  G01J1/02 ,  G01J3/02 ,  H05B45/22 ,  H05B45/24 ,  H05B47/24 ,  H05B47/21 ,  H05B45/12 ,  G01J1/32 ,  G01J1/42 ,  G01R31/44

CPC分类号： H05B47/10 ,  G01J3/465 ,  G01J3/505 ,  G01J1/0252 ,  G01J3/0286 ,  H05B45/22 ,  H05B45/24 ,  H05B47/24 ,  H05B47/22 ,  H05B45/12 ,  G01J1/32 ,  G01J1/42 ,  G01R31/44 ,  G01J2001/4252 ,  G01J2001/444

摘要： An illumination device and method are provided herein for calibrating individual LEDs in the illumination device to obtain a desired luminous flux and a desired chromaticity of the device over changes in drive current, temperature, and over time as the LEDs age. The calibration method may include subjecting the illumination device to a first ambient temperature, successively applying at least three different drive currents to a first LED to produce illumination at three or more different levels of brightness, obtaining a plurality of optical measurements from the illumination produced by the first LED at each of the at least three different drive currents, obtaining a plurality of electrical measurements from the photodetector and storing results of the obtaining steps within the illumination device to calibrate the first LED at the first ambient temperature. The plurality of optical measurements may generally include luminous flux and chromaticity, the plurality of electrical measurements may generally include induced photocurrents and forward voltages, and the calibration method steps may be repeated for each LED included within the illumination device and upon subjecting the illumination device to a second ambient temperature.

公开(公告)号：US11723134B2

公开(公告)日：2023-08-08

申请号：US17669976

申请日：2022-02-11

申请人： Lutron Technology Company LLC

发明人： Horace C. Ho ,  Jason E. Lewis ,  David J. Knapp

IPC分类号： G01J1/02 ,  H05B45/18 ,  H05B47/10 ,  G01J3/46 ,  G01J3/50 ,  G01J3/02 ,  H05B45/22 ,  H05B45/24 ,  H05B47/24 ,  H05B47/21 ,  H05B45/12 ,  G01J1/32 ,  G01J1/42 ,  G01R31/44 ,  G01J1/44 ,  H05B47/105

CPC分类号： H05B47/10 ,  G01J1/0252 ,  G01J1/32 ,  G01J1/42 ,  G01J3/0286 ,  G01J3/465 ,  G01J3/505 ,  G01R31/44 ,  H05B45/12 ,  H05B45/22 ,  H05B45/24 ,  H05B47/22 ,  H05B47/24 ,  G01J2001/4252 ,  G01J2001/444 ,  H05B45/18 ,  H05B47/105

摘要： An illumination device and method are provided herein for calibrating individual LEDs in the illumination device to obtain a desired luminous flux and a desired chromaticity of the device over changes in drive current, temperature, and over time as the LEDs age. The calibration method may include subjecting the illumination device to a first ambient temperature, successively applying at least three different drive currents to a first LED to produce illumination at three or more different levels of brightness, obtaining a plurality of optical measurements from the illumination produced by the first LED at each of the at least three different drive currents, obtaining a plurality of electrical measurements from the photodetector and storing results of the obtaining steps within the illumination device to calibrate the first LED at the first ambient temperature. The plurality of optical measurements may generally include luminous flux and chromaticity, the plurality of electrical measurements may generally include induced photocurrents and forward voltages, and the calibration method steps may be repeated for each LED included within the illumination device and upon subjecting the illumination device to a second ambient temperature.

公开(公告)号：US20230164898A1

公开(公告)日：2023-05-25

申请号：US17919544

申请日：2021-04-22

申请人： SIGNIFY HOLDING B.V.

发明人： Tijmen Cornelis VAN BODEGRAVEN ,  Reinhold ELFERICH

IPC分类号： H05B47/24 ,  H05B45/382

CPC分类号： H05B47/24 ,  H05B45/382 ,  H05B45/50

摘要： A lamp driver delivers an output voltage and output current to a lamp load. A current regulating circuit at a secondary side provides a feedback signal for use by the driver when in a current regulation mode. An overvoltage protection circuit detects an overvoltage condition of an output voltage and modulates the feedback signal during detection of the overvoltage condition. The overvoltage condition can then be recognized more easily based on the resulting modulation of the output voltage.

公开(公告)号：US20240334571A1

公开(公告)日：2024-10-03

申请号：US18231743

申请日：2023-08-08

申请人： Xiamen PVTECH Co., Ltd.

发明人： FUXING LU ,  BOHAO ZHANG

IPC分类号： H05B45/54 ,  H05B45/30 ,  H05B47/24

CPC分类号： H05B45/54 ,  H05B45/30 ,  H05B47/24

摘要： A lighting device protection circuit includes an input module, a rectifying module, a driving module and a varistor. The input module includes a positive electrode input end and a negative electrode input end. The rectifying module has a first end, a second end, a third end and a fourth end; the first end, the second end and the third end are connected to the positive electrode input end, a first node and the negative electrode input end respectively. The first node is connected to a grounding point. The driving module has a first pin, a second pin, a third pin and a fourth pin, which are connected to the fourth end, the first node, a second node and the positive electrode of a LED module respectively. The second node is connected to the negative electrode of the LED module. The varistor is connected to the LED module in series.

公开(公告)号：US12052807B2

公开(公告)日：2024-07-30

申请号：US18212994

申请日：2023-06-22

申请人： Lutron Technology Company LLC

发明人： Horace C. Ho ,  Jason E. Lewis ,  David J. Knapp

IPC分类号： H05B47/10 ,  G01J1/02 ,  G01J1/32 ,  G01J1/42 ,  G01J1/44 ,  G01J3/02 ,  G01J3/46 ,  G01J3/50 ,  G01R31/44 ,  H05B45/12 ,  H05B45/18 ,  H05B45/22 ,  H05B45/24 ,  H05B47/105 ,  H05B47/21 ,  H05B47/24

CPC分类号： H05B47/10 ,  G01J1/0252 ,  G01J1/32 ,  G01J1/42 ,  G01J3/0286 ,  G01J3/465 ,  G01J3/505 ,  G01R31/44 ,  H05B45/12 ,  H05B45/22 ,  H05B45/24 ,  H05B47/22 ,  H05B47/24 ,  G01J2001/4252 ,  G01J2001/444 ,  H05B45/18 ,  H05B47/105

摘要： An illumination device and method are provided herein for calibrating individual LEDs in the illumination device to obtain a desired luminous flux and a desired chromaticity of the device over changes in drive current, temperature, and over time as the LEDs age. The calibration method may include subjecting the illumination device to a first ambient temperature, successively applying at least three different drive currents to a first LED to produce illumination at three or more different levels of brightness, obtaining a plurality of optical measurements from the illumination produced by the first LED at each of the at least three different drive currents, obtaining a plurality of electrical measurements from the photodetector and storing results of the obtaining steps within the illumination device to calibrate the first LED at the first ambient temperature. The plurality of optical measurements may generally include luminous flux and chromaticity, the plurality of electrical measurements may generally include induced photocurrents and forward voltages, and the calibration method steps may be repeated for each LED included within the illumination device and upon subjecting the illumination device to a second ambient temperature.

公开(公告)号：US11844166B2

公开(公告)日：2023-12-12

申请号：US17572204

申请日：2022-01-10

申请人： ABL IP Holding LLC

发明人： Dalibor Zulim ,  Richard Lee Westrick, Jr. ,  Ryan Zaveruha ,  Frank Pelliccio

IPC分类号： H05B47/25 ,  H02H3/22 ,  H05B47/24 ,  H05B47/165 ,  H02J9/06 ,  H05B41/36 ,  H02H9/04 ,  H01H47/00 ,  H01H47/18 ,  G01R31/327

CPC分类号： H05B47/25 ,  H02H3/22 ,  H02J9/061 ,  H05B41/36 ,  H05B47/165 ,  H05B47/24 ,  G01R31/3278 ,  H01H47/002 ,  H01H47/18 ,  H01H2047/009 ,  H02H9/042

摘要： A lighting relay panel may include lower-cost features or components related to improved safety and reliability. In some cases, the relay panel includes a power supply capable of protecting the panel from high-voltage and high-current transients. A microcontroller may determine a power interruption based on a zero-cross signal received from the power supply, and may also configure latching relays during the interruption. In some implementations, the relay panel includes a relay sense circuit that is capable of receiving actuation signals from multiple relays connected to different phases of a power signal, and the microcontroller may synchronize or repeat the actuations based on a signal from the relay sense circuit. The microcontroller may generate relay addresses based on the relay positions within the relay panel. In some cases, the relay panel may include isolation circuits that are capable of providing an isolated control signal having an improved voltage range.

公开(公告)号：US11647574B2

公开(公告)日：2023-05-09

申请号：US17544092

申请日：2021-12-07

申请人： Elemental LED, Inc.

发明人： William H. Avery, Jr.

IPC分类号： H05B45/10 ,  F21V23/06 ,  H05B45/355 ,  H05B45/56 ,  F21V23/00 ,  H05B45/18 ,  F21S4/28 ,  H05B45/34 ,  H05B47/24 ,  H05B45/14 ,  H05B45/325 ,  F21Y115/10 ,  F21Y103/10

CPC分类号： H05B45/355 ,  F21S4/28 ,  F21V23/002 ,  F21V23/005 ,  F21V23/06 ,  H05B45/14 ,  H05B45/18 ,  H05B45/325 ,  H05B45/34 ,  H05B45/56 ,  H05B47/24 ,  F21Y2103/10 ,  F21Y2115/10

摘要： A voltage-regulating drive circuit for an LED luminaire is disclosed. The drive circuit includes one or several series of LED light engines. A voltage source with a regulator is connected to the series of LED light engines to forward-bias the light engines. The circuit also includes a driver integrated circuit, which may drive the series of LED light engines using, e.g., pulse-width modulation (PWM). The circuit also includes a feedback circuit connected to the cathode end of the series of LED light engines. The feedback circuit receives a remainder voltage and creates a feedback output signal that upregulates or downregulates the regulator of the voltage source to keep a minimum operating voltage on the driver integrated circuit and to compensate for variations in forward voltages among LED light engines in the series.

公开(公告)号：US12133306B2

公开(公告)日：2024-10-29

申请号：US17919544

申请日：2021-04-22

申请人： SIGNIFY HOLDING B.V.

发明人： Tijmen Cornelis Van Bodegraven ,  Reinhold Elferich

IPC分类号： H05B45/30 ,  H05B45/382 ,  H05B45/50 ,  H05B47/24

CPC分类号： H05B45/50 ,  H05B45/382 ,  H05B47/24

摘要： A lamp driver delivers an output voltage and output current to a lamp load. A current regulating circuit at a secondary side provides a feedback signal for use by the driver when in a current regulation mode. An overvoltage protection circuit detects an overvoltage condition of an output voltage and modulates the feedback signal during detection of the overvoltage condition. The overvoltage condition can then be recognized more easily based on the resulting modulation of the output voltage.