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公开(公告)号:US11503688B2
公开(公告)日:2022-11-15
申请号:US17694185
申请日:2022-03-14
申请人: DMF, Inc.
发明人: Russikesh Kumar , Oren Kashani
IPC分类号: H05B45/20 , H05B45/385 , H05B45/325 , H05B45/31
摘要: Apparatus and methods for controlling correlated color temperature (CCT) and lighting intensity in lighting fixtures are described. The CCT and intensity may be controlled independently over conventional AC wiring using a conventional dimmer. A lighting controller that resembles a conventional dimmer and that can be installed in place of a dimmer may be used instead of a conventional dimmer to access more control functionalities, still using conventional AC wiring. Wireless communication with the lighting fixture and/or lighting controller are possible.
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公开(公告)号:US20220338321A1
公开(公告)日:2022-10-20
申请号:US17857807
申请日:2022-07-05
申请人: Aleddra Inc.
发明人: Chungho Hsia
IPC分类号: H05B45/325 , H05B45/59 , H05B45/31
摘要: A light-emitting diode (LED) luminaire phase-dimming driver comprises a first power supply circuit, a second power supply circuit, and an interface control circuit. The second power supply circuit is configured to convert a constant voltage generated from the first power supply circuit into an output direct-current (DC) voltage to dim an external LED luminaire in response to a phase-dimming signal abstracted from a phase-cut mains voltage no matter whether the external LED luminaire is originally dimmable or not. The second power supply circuit is further configured to receive a pulse-width modulation (PWM) signal and to control the output DC voltage in response to the PWM signal. The interface control circuit comprises a relay switch configured to sense the phase-dimming signal and to control switching between an intermediate voltage and the output DC voltage to operate the external LED luminaire without flickering.
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公开(公告)号:US20220225480A1
公开(公告)日:2022-07-14
申请号:US17554306
申请日:2021-12-17
发明人: KE LI , LIQIANG ZHU
摘要: System and method for controlling one or more light emitting diodes. For example, the system includes: a phase detector configured to process information associated with a rectified voltage generated by a rectifier and related to a TRIAC dimmer, the rectified voltage corresponding to a first waveform during a first half cycle of an AC voltage and corresponding to a second waveform during a second half cycle of the AC voltage, the phase detector being further configured to generate a phase detection signal representing a first time duration during which the first waveform indicates that the rectified voltage is larger than a predetermined threshold and representing a second time duration during which the second waveform indicates that the rectified voltage is larger than the predetermined threshold; and a mode detector configured to process information associated with the rectified voltage.
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公开(公告)号:US11116057B2
公开(公告)日:2021-09-07
申请号:US16929540
申请日:2020-07-15
申请人: Aleddra Inc.
发明人: Chungho Hsia
摘要: A light-emitting diode (LED) luminaire control system comprising a control circuit is adopted to provide remote control signals to operate an external luminaire that comprises LED arrays and a power supply. The LED luminaire control system further comprises a relay switch, a remote controller, and a transceiver circuit. When the remote control signals are initiated by the remote controller with phase-shift keying (PSK) signals transmitted, the transceiver circuit can demodulate such PSK signals and subsequently send decoded commands to the LED luminaire control system to control the luminaire by turning on and off and dimming up and down the external luminaire.
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公开(公告)号:US10959307B2
公开(公告)日:2021-03-23
申请号:US16696618
申请日:2019-11-26
发明人: Mark A. Benning , Thomas W. Brenner , Quinn Brogan , Donald F. Hausman, Jr. , Peter MacLellan , Matthew Kyle Olsen , Matthew Pennock
摘要: A load control device coupled between an AC power source and an electrical load may operate in a three-wire mode or a two-wire mode based on whether the load control device is connected to a neutral side of the AC power source. The load control device may further comprise first and second zero-cross detect circuits to be respectively used in the two-wire mode or the three-wire mode, and a neutral wire detect circuit configured to generate a neutral wire detect signal indicating whether the load control device is connected to the neutral side of the AC power source. A control circuit of the load control device may determine whether the load control device should operate in the two-wire mode or in the three-wire mode in response to the neutral wire detect signal.
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公开(公告)号:US20200178372A1
公开(公告)日:2020-06-04
申请号:US16696618
申请日:2019-11-26
发明人: Mark A. Benning , Thomas W. Brenner , Quinn Brogan , Donald F. Hausman, JR. , Peter MacLellan , Matthew Kyle Olsen , Matthew Pennock
摘要: A load control device coupled between an AC power source and an electrical load may operate in a three-wire mode or a two-wire mode based on whether the load control device is connected to a neutral side of the AC power source. The load control device may further comprise first and second zero-cross detect circuits to be respectively used in the two-wire mode or the three-wire mode, and a neutral wire detect circuit configured to generate a neutral-wire detect signal indicating whether the load control device is connected to the neutral side of the AC power source. A control circuit of the load control device may determine whether the load control device should operate in the two-wire mode or in the three-wire mode in response to the neutral-wire detect signal.
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公开(公告)号:US11638335B2
公开(公告)日:2023-04-25
申请号:US17023632
申请日:2020-09-17
发明人: Liqiang Zhu , Jun Zhou
IPC分类号: H05B47/14 , H05B45/10 , H05B45/395 , H05B45/31 , H05B45/345 , H05B45/50
摘要: System and method for controlling one or more light emitting diodes. For example, the system for controlling one or more light emitting diodes includes a current regulation circuit coupled to a cathode of one or more light emitting diodes. The one or more light emitting diodes include the cathode and an anode configured to receive a rectified voltage. Additionally, the system includes a control circuit coupled to the cathode of the one or more light emitting diodes. The control circuit is configured to receive a first voltage from the cathode of the one or more light emitting diodes, compare a second voltage and a threshold voltage, and generate a control signal based at least in part on the second voltage and the threshold voltage. The second voltage indicates a magnitude of the first voltage.
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公开(公告)号:US11570859B2
公开(公告)日:2023-01-31
申请号:US17023615
申请日:2020-09-17
发明人: Liqiang Zhu , Jun Zhou
IPC分类号: H05B45/10 , H05B45/395 , H05B45/31 , H05B45/345 , H05B45/50
摘要: System and method for controlling one or more light emitting diodes. For example, the system for controlling one or more light emitting diodes includes a current regulation circuit coupled to a cathode of one or more light emitting diodes. The one or more light emitting diodes include the cathode and an anode configured to receive a rectified voltage. Additionally, the system includes a control circuit coupled to the cathode of the one or more light emitting diodes. The control circuit is configured to receive a first voltage from the cathode of the one or more light emitting diodes, compare a second voltage and a threshold voltage, and generate a control signal based at least in part on the second voltage and the threshold voltage. The second voltage indicates a magnitude of the first voltage.
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公开(公告)号:US11540365B2
公开(公告)日:2022-12-27
申请号:US17215332
申请日:2021-03-29
发明人: William Zotter , Bingrui Yang , Henry Kite
摘要: A lighting device, such as a two-wire lighting control device, may include a controllably conductive device and a control circuit. The controllably conductive device may supply an AC line voltage to a load in response to a dive signal such that the controllable conductive device is non-conductive for a first duration of time and conductive for a second duration of time within a half-cycle of the AC line voltage. The control circuit may receive a signal from the controllably conductive device that represents a voltage developed across the controllable conductive device during the first duration of time. The control circuit may generate a sine-wave-shaped signal that complements the voltage developed across the controllably conductive device during the second duration of time. The control circuit may also filter the signal from the controllably conductive device during the first duration of time and the sine-wave-shaped signal during the second duration of time.
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公开(公告)号:US20220256663A1
公开(公告)日:2022-08-11
申请号:US17734201
申请日:2022-05-02
发明人: Huiqiang Chen , Zhishuo Wang , Jianxin Wang
IPC分类号: H05B45/10 , H05B45/31 , H05B45/3575 , H05B45/395
摘要: An apparatus for an LED driver with a silicon-controlled dimmer, can include: a bleeder circuit coupled to a DC bus of the LED driver; and a controller configured to control the bleeder circuit to draw a bleeder current from the DC bus when a conduction angel of the silicon-controlled dimmer is less than an angle threshold, in order to maintain a conduction state of the silicon-controlled dimmer.
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