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1. 发明授权

US10517151B1 Linear constant-current LED light circuit 有权
公开(公告)号：US10517151B1
公开(公告)日：2019-12-24
申请号：US16128921
申请日：2018-09-12
申请人： GUANGZHOU IETHAI LIGHTING ELECTRONIC TECHNOLOGY CO., LTD.
发明人： Weixiong Pan
IPC分类号： H05B33/08 , H05B37/02
摘要： A linear constant-current LED light circuit that can automatically adapt to a change of an input voltage according to changes of a quantity of dedicated constant-current circuits and a quantity of LEDs in series, so that a total voltage of the LEDs is always close to the input voltage, thereby reducing a voltage drop of a constant-current transistor and reducing power loss of the constant-current transistor, so as to achieve energy saving. The dedicated constant-current circuits make the LEDs work in a rated current range, without generating overcurrent to cause damage, and a progressive decrease of a resistance of n stage dedicated constant-current circuits is set to implement a progressive increase of currents of the n stage dedicated constant-current circuits, so that a working current of the circuit can follow the input voltage. Therefore, the circuit has a relatively high power factor, relatively low harmonic distortion, and good electrical performance.

2. 发明授权

US10015861B1 Adaptive LED light 有权
公开(公告)号：US10015861B1
公开(公告)日：2018-07-03
申请号：US15902993
申请日：2018-02-22
申请人： GUANGZHOU IETHAI LIGHTING ELECTRONIC TECHNOLOGY CO., LTD.
发明人： Weixiong Pan
IPC分类号： H05B39/02 , H05B37/02 , H05B33/08
CPC分类号： H05B37/02 , H05B33/0815 , H05B33/0842 , Y02B20/347
摘要： The present invention discloses an adaptive LED light, comprising: a DC power supply, a first LED assembly, a second LED assembly, a first current-controlled switch, a second current-controlled switch and a first diode, wherein the first LED assembly comprises a first LED light, a first constant-current circuit and a first electrolytic capacitor; the second LED assembly comprises a second LED light, a second constant-current circuit and a second electrolytic capacitor; an input terminal of the first LED assembly is connected to a positive output terminal of the DC power supply and one terminal of the first current-controlled switch, respectively; an anode of the first diode is connected to an output terminal of the first LED assembly and one terminal of the second current-controlled switch, respectively, while a cathode thereof is connected to the other terminal of the first current-controlled switch and an input terminal of the second LED assembly, respectively; and, the other terminal of the second current-controlled switch is connected to an output terminal of the second LED assembly and a negative output terminal of the DC power supply, respectively. The LED light emits light continuously and stably, does not generate stroboflash, and has a high power factor and a low harmonic distortion.

3. 发明申请

US20190394843A1 LINEAR CONSTANT-CURRENT LED LIGHT CIRCUIT 审中-公开
公开(公告)号：US20190394843A1
公开(公告)日：2019-12-26
申请号：US16128921
申请日：2018-09-12
申请人： GUANGZHOU IETHAI LIGHTING ELECTRONIC TECHNOLOGY CO., LTD.
发明人： Weixiong Pan
IPC分类号： H05B33/08 , H05B37/02
摘要： A linear constant-current LED light circuit that can automatically adapt to a change of an input voltage according to changes of a quantity of dedicated constant-current circuits and a quantity of LEDs in series, so that a total voltage of the LEDs is always close to the input voltage, thereby reducing a voltage drop of a constant-current transistor and reducing power loss of the constant-current transistor, so as to achieve energy saving. The dedicated constant-current circuits make the LEDs work in a rated current range, without generating overcurrent to cause damage, and a progressive decrease of a resistance of n stage dedicated constant-current circuits is set to implement a progressive increase of currents of the n stage dedicated constant-current circuits, so that a working current of the circuit can follow the input voltage. Therefore, the circuit has a relatively high power factor, relatively low harmonic distortion, and good electrical performance.

4. 发明授权

US09155149B2 Self-adaptive drive circuit and LED lamp with the same 有权
标题翻译：自适应驱动电路和LED灯具相同
公开(公告)号：US09155149B2
公开(公告)日：2015-10-06
申请号：US13928361
申请日：2013-06-26
申请人： GUANGZHOU IETHAI LIGHTING ELECTRONIC TECHNOLOGY CO., LTD.
发明人： Weixiong Pan
IPC分类号： H05B33/08
CPC分类号： H05B33/0824
摘要： The invention relates to a technical field of light emitting diodes (LEDs), in particular to a self-adaptive drive circuit and an LED lamp with the same. The LED lamp comprises a plurality of series LED lamp strings, and each LED lamp string comprises at least one series LED lamp bead; and the self-adaptive drive circuit comprises a rectifying unit, a current limiting unit, a voltage detection and connectivity control unit and at least one controllable switch unit. According to the self-adaptive drive circuit and the LED lamp with the same, the LEDs can be driven normally in an extremely simple drive mode, which can work without using complex constant current drive circuit and electrolytic capacitor that is life limiting. At the same time, the stroboflash phenomenon is eliminated, the power factor is improved, harmonic distortion is reduced, electromagnetic interference is eliminated, and the cost is reduced.
摘要翻译：本发明涉及发光二极管（LED）的技术领域，特别涉及自适应驱动电路和具有该发光二极管的LED灯。 LED灯包括多个串联LED灯串，每个LED灯串包括至少一个串联的LED灯珠; 并且所述自适应驱动电路包括整流单元，限流单元，电压检测和连接性控制单元以及至少一个可控开关单元。根据自适应驱动电路和LED灯具相同，LED可以以非常简单的驱动模式正常驱动，这可以在不使用复杂的恒流驱动电路和寿命限制的电解电容器的情况下工作。同时，消除闪光灯现象，提高功率因数，降低谐波失真，消除电磁干扰，降低成本。

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