公开(公告)号：US08659919B2

公开(公告)日：2014-02-25

申请号：US12896259

申请日：2010-10-01

申请人： Guichao Hua ,  Xiaoli Yao ,  Liangan Ge ,  Lijun Ren

发明人： Guichao Hua ,  Xiaoli Yao ,  Liangan Ge ,  Lijun Ren

IPC分类号： H02M1/14 ,  H02M1/42

CPC分类号： H02M1/4225 ,  H02J7/041 ,  H02J7/345 ,  H02M2001/0032 ,  Y02B40/90 ,  Y02B70/126 ,  Y02B70/16 ,  Y02P80/112

摘要： A circuit to improve the power factor of a power supply at light load, the circuit including a rectifier bridge, a filter positioned before or after the rectifier bridge, a logic control and power drive circuit, a switching transistor, a light load detecting circuit configured to output a control signal to the logic control and power drive circuit which controls the switching transistor to conduct when a heavy load is experienced and to cut off when a light load is experienced, in order to control the working status of the filter capacitor, and a power factor correction circuit.

摘要翻译： 一种提高轻载电源功率因数的电路，该电路包括整流桥，位于整流桥之前或之后的滤波器，逻辑控制和功率驱动电路，开关晶体管，轻载检测电路配置 向控制开关晶体管导通的逻辑控制和电力驱动电路输出控制信号，以便在经历轻负载时切断，以便控制滤波电容器的工作状态，以及 功率因数校正电路。

公开(公告)号：US20140021875A1

公开(公告)日：2014-01-23

申请号：US14008438

申请日：2011-08-29

申请人： Delai Jiang ,  Jianhua Zou ,  Guichao Hua

发明人： Delai Jiang ,  Jianhua Zou ,  Guichao Hua

IPC分类号： H05B37/02

CPC分类号： H05B37/02 ,  H02M1/081 ,  H02M5/293 ,  H02M2001/0006 ,  H05B39/04

摘要： An auxiliary power supply circuit of a two wire dimmer, comprising: an auxiliary source capacitor (20) and a cutoff switch (30) constituting a series branch, a chopper switch (10) parallel-connected to the series branch, and a control device (40) connected to the chopper switch (10) and to the cutoff switch (30). The control device (40) measures an auxiliary source voltage and receives a chopper voltage control signal (Vg), and outputs signals (V1 and V2), on the basis of the result of a comparison between the auxiliary source voltage and a preset voltage and of the state of the chopper voltage control signal (Vg), to control the on and off of the chopper switch (10) and of the cutoff switch (30) for controlling the charging of the auxiliary source capacitor (20). The auxiliary power supply circuit has low losses, high efficiency, and is not limited by minimum chopper angle, and has low electromagnetic interference.

摘要翻译： 一种双线调光器的辅助电源电路，包括：辅助源电容器（20）和构成串联分支的截止开关（30），与串联分支并联的斩波开关（10），以及控制装置 （40）连接到斩波开关（10）和断开开关（30）。 控制装置（40）根据辅助电源电压和预设电压之间的比较结果，测量辅助电源电压并接收斩波电压控制信号（Vg），并输出信号（V1和V2），以及 的斩波电压控制信号（Vg）的状态，以控制用于控制辅助源电容器（20）的充电的斩波开关（10）和截止开关（30）的导通和截止。 辅助电源电路损耗低，效率高，不受最小切割角度的限制，电磁干扰低。

公开(公告)号：US08454185B2

公开(公告)日：2013-06-04

申请号：US13143871

申请日：2010-03-04

申请人： Guichao Hua ,  Kun Lang ,  Xinke Wu ,  Congfeng Zhang ,  Wanyu Tang

发明人： Guichao Hua ,  Kun Lang ,  Xinke Wu ,  Congfeng Zhang ,  Wanyu Tang

IPC分类号： F21V9/00 ,  F21V29/00 ,  H01L33/02 ,  H05K13/00

CPC分类号： F21V23/009 ,  F21K9/27 ,  F21S6/005 ,  F21V23/003 ,  F21V29/58 ,  F21V29/74 ,  F21V29/83 ,  F21V29/85 ,  F21V29/86 ,  F21V29/87 ,  F21V29/89 ,  F21Y2103/10 ,  F21Y2107/30 ,  F21Y2115/10 ,  H01L25/0753 ,  H01L33/648 ,  H01L2924/0002 ,  H01L2924/00

摘要： The invention discloses a hollow, liquid cooling and strip-shaped LED lamp, comprising an LED driver, an LED light source, and LED substrate, a light distributing lampshade, electrical connectors at two ends and a lamp socket. The invention is characterized in that a hollow inner container is set in the light distributing lampshade. The hollow chamber between the hollow inner container and the light distributing lampshade is filled with heat conducting liquid. The LED substrate is immersed in the heat conducting liquid. The invention conducts heat by conduction and convection of the heat conducting liquid, which can obtain good heat radiating effect. Meanwhile, the inner container and the light distributing lampshade form a hollow radiating shell filled with high performance heat conducting liquid, and the hollow radiating shell can be made of light weight materials. Therefore, the radiating shell is light in weight, environmental friendly, durable and low cost. Especially, since the heat conducting liquid fills in the hollow chamber of the hollow radiating shell directly in the invention, the heat radiating effect will be improved and at the same time the volume of the product will not increase.

摘要翻译： 本发明公开了一种中空的液体冷却和条状LED灯，包括LED驱动器，LED光源和LED基板，分配灯罩，两端的电连接器和灯座。 本发明的特征在于，在分配灯罩中设置有中空的内部容器。 中空内容器和分配灯罩之间的中空室填充有导热液体。 将LED基板浸入导热液中。 本发明通过导热液体的传导和对流传导热量，可以获得良好的散热效果。 同时，内部容器和配光灯罩形成一个填充有高性能导热液体的中空辐射壳体，中空辐射壳体可由轻质材料制成。 因此，辐射外壳重量轻，环保，耐用，成本低。 特别地，由于导热液体直接在本发明中填充中空辐射壳体的中空室，所以散热效果将得到改善，同时产品的体积也不会增加。

公开(公告)号：US20110267805A1

公开(公告)日：2011-11-03

申请号：US13143871

申请日：2010-03-04

申请人： Guichao Hua ,  Kun Lang ,  Xinke Wu ,  Congfeng Zhang ,  Wanyu Tang

发明人： Guichao Hua ,  Kun Lang ,  Xinke Wu ,  Congfeng Zhang ,  Wanyu Tang

IPC分类号： F21V33/00

CPC分类号： F21V23/009 ,  F21K9/27 ,  F21S6/005 ,  F21V23/003 ,  F21V29/58 ,  F21V29/74 ,  F21V29/83 ,  F21V29/85 ,  F21V29/86 ,  F21V29/87 ,  F21V29/89 ,  F21Y2103/10 ,  F21Y2107/30 ,  F21Y2115/10 ,  H01L25/0753 ,  H01L33/648 ,  H01L2924/0002 ,  H01L2924/00

摘要： The invention discloses a hollow, liquid cooling and strip-shaped LED lamp, comprising an LED driver, an LED light source, and LED substrate, a light distributing lampshade, electrical connectors at two ends and a lamp socket. The invention is characterized in that a hollow inner container is set in the light distributing lampshade. The hollow chamber between the hollow inner container and the light distributing lampshade is filled with heat conducting liquid. The LED substrate is immersed in the heat conducting liquid. The invention conducts heat by conduction and convection of the heat conducting liquid, which can obtain good heat radiating effect. Meanwhile, the inner container and the light distributing lampshade form a hollow radiating shell filled with high performance heat conducting liquid, and the hollow radiating shell can be made of light weight materials. Therefore, the radiating shell is light in weight, environmental friendly, durable and low cost. Especially, since the heat conducting liquid fills in the hollow chamber of the hollow radiating shell directly in the invention, the heat radiating effect will be improved and at the same time the volume of the product will not increase.

摘要翻译： 本发明公开了一种中空的液体冷却和条状LED灯，包括LED驱动器，LED光源和LED基板，分配灯罩，两端的电连接器和灯座。 本发明的特征在于，在分配灯罩中设置有中空的内部容器。 中空内容器和分配灯罩之间的中空室填充有导热液体。 将LED基板浸入导热液中。 本发明通过导热液体的传导和对流传导热量，可以获得良好的散热效果。 同时，内部容器和配光灯罩形成一个填充有高性能导热液体的中空辐射壳体，中空辐射壳体可由轻质材料制成。 因此，辐射外壳重量轻，环保，耐用，成本低。 特别地，由于导热液体直接在本发明中填充中空辐射壳体的中空室，所以散热效果将得到改善，同时产品的体积也不会增加。

公开(公告)号：US07957163B2

公开(公告)日：2011-06-07

申请号：US12397909

申请日：2009-03-04

申请人： Guichao Hua ,  Wu Xinke ,  Luo Changchun

发明人： Guichao Hua ,  Wu Xinke ,  Luo Changchun

IPC分类号： H02M3/335

CPC分类号： H02M3/33592 ,  Y02B70/1433 ,  Y02B70/1475

摘要： A current controlled synchronous rectifying drive circuit including a current transducer ST having a primary winding connected in series with a synchronous rectifier SR and having a secondary winding to detect a current signal of a synchronous rectifier SR, a signal shaping and reset circuit connected to the secondary winding of the current transducer ST to convert the synchronous rectifier SR's current signal into a voltage signal and shapes it into a pulse signal, a push-pull power amplifying circuit having an input end connected to the signal shaping and reset circuit and an output end connected to a gate of the synchronous rectifier SR to amplify a drive signal generated by the signal shaping and reset circuit to drive the synchronous rectifier SR, and a drive self-bias drive circuit having an input end connected to the secondary winding of the current transducer ST and an output end connected to the push-pull power amplifying circuit to store energy from the current transducer ST to generate a voltage source.

摘要翻译： 一种电流控制同步整流驱动电路，包括具有与同步整流器SR串联连接的初级绕组的电流传感器ST，并具有用于检测同步整流器SR的电流信号的次级绕组，连接到次级绕组的信号整形和复位电路 绕组电流传感器ST以将同步整流器SR的电流信号转换成电压信号并将其变形为脉冲信号，具有连接到信号整形和复位电路的输入端的推挽功率放大电路和连接到信号整形和复位电路的输出端 到同步整流器SR的门，以放大由信号整形和复位电路产生的驱动信号以驱动同步整流器SR;以及驱动自偏置驱动电路，其输入端连接到电流变换器ST的次级绕组 以及连接到推挽功率放大电路以输出来自电流换能器ST的能量的输出端 以产生电压源。

公开(公告)号：US07791903B2

公开(公告)日：2010-09-07

申请号：US11561937

申请日：2006-11-21

申请人： Congfeng Zhang ,  Hao Zhang ,  Guichao Hua

发明人： Congfeng Zhang ,  Hao Zhang ,  Guichao Hua

IPC分类号： H02M3/335

CPC分类号： H02M3/33592 ,  Y02B70/1475

摘要： A DC-DC flyback converter, includes a three-winding transformer; a primary power circuit having a first MOSFET connected to a first winding of the transformer; a secondary power circuit connected to a second winding of the transformer terminals; and a self-driven circuit connected to a third winding of the transformer. The secondary power circuit includes a synchronous rectifier in the form of a second MOSFET and the self-driven circuit further includes a delay drive circuit, an isolation differential circuit, a negative removal circuit having a third MOSFET and a synchronous rectifier trigger switch-off circuit for switching the synchronous rectifier to an off condition.

摘要翻译： DC-DC反激式转换器，包括三绕组变压器; 主电源电路，其具有连接到变压器的第一绕组的第一MOSFET; 连接到变压器端子的第二绕组的次级电源电路; 以及连接到变压器的第三绕组的自驱动电路。 次级电源电路包括第二MOSFET形式的同步整流器，并且自驱动电路还包括延迟驱动电路，隔离差分电路，具有第三MOSFET的同步整流器和同步整流器触发关断电路 用于将同步整流器切换到关闭状态。

公开(公告)号：US20100182117A1

公开(公告)日：2010-07-22

申请号：US12686657

申请日：2010-01-13

申请人： Xinke Wu ,  Guichao Hua ,  Xun Huang

发明人： Xinke Wu ,  Guichao Hua ,  Xun Huang

IPC分类号： H01F27/29

CPC分类号： H01F38/30 ,  H01F3/12 ,  H01F27/2866

摘要： A pulse current transducer including at least one open core, an armature, together with the at least one open core form a closed magnetic circuit, a winding wound around the at least one open core, at least one signal output pin connected to the at least one open core, and a conducting strip between the armature and the at least one open core.

摘要翻译： 脉冲电流传感器，包括至少一个开放磁芯，电枢以及至少一个开放磁芯形成闭合磁路，围绕所述至少一个开放磁芯缠绕的绕组，至少一个连接到所述至少一个开放磁芯的信号输出引脚 一个开芯，以及在所述电枢和所述至少一个开芯之间的导电条。

公开(公告)号：US20090262560A1

公开(公告)日：2009-10-22

申请号：US12397909

申请日：2009-03-04

申请人： Guichao Hua ,  Wu Xinke ,  Luo Changchun

发明人： Guichao Hua ,  Wu Xinke ,  Luo Changchun

IPC分类号： H02M3/337

CPC分类号： H02M3/33592 ,  Y02B70/1433 ,  Y02B70/1475

摘要： A current controlled synchronous rectifying drive circuit including a current transducer ST having a primary winding connected in series with a synchronous rectifier SR and having a secondary winding to detect a current signal of a synchronous rectifier SR, a signal shaping and reset circuit connected to the secondary winding of the current transducer ST to convert the synchronous rectifier SR's current signal into a voltage signal and shapes it into a pulse signal, a push-pull power amplifying circuit having an input end connected to the signal shaping and reset circuit and an output end connected to a gate of the synchronous rectifier SR to amplify a drive signal generated by the signal shaping and reset circuit to drive the synchronous rectifier SR, and a drive self-bias drive circuit having an input end connected to the secondary winding of the current transducer ST and an output end connected to the push-pull power amplifying circuit to store energy from the current transducer ST to generate a voltage source.

摘要翻译： 一种电流控制同步整流驱动电路，包括具有与同步整流器SR串联连接的初级绕组的电流传感器ST，并具有用于检测同步整流器SR的电流信号的次级绕组，连接到次级绕组的信号整形和复位电路 绕组电流传感器ST以将同步整流器SR的电流信号转换成电压信号并将其变形为脉冲信号，具有连接到信号整形和复位电路的输入端的推挽功率放大电路和连接到信号整形和复位电路的输出端 到同步整流器SR的门，以放大由信号整形和复位电路产生的驱动信号以驱动同步整流器SR;以及驱动自偏置驱动电路，其输入端连接到电流变换器ST的次级绕组 以及连接到推挽功率放大电路以输出来自电流换能器ST的能量的输出端 以产生电压源。

公开(公告)号：US06583993B2

公开(公告)日：2003-06-24

申请号：US09932398

申请日：2001-08-17

申请人： Guichao Hua

发明人： Guichao Hua

IPC分类号： H02M3335

CPC分类号： H02M3/33592 ,  Y02B70/1475

摘要： A self-driven synchronous rectification circuit which includes two power switches S1 and S2; a transformer Tr having a primary winding with Np number of turns, a secondary winding with Ns number of turns and an auxiliary winding with Na number of turns; two secondary synchronous rectifiers S3 and S4; two diodes D1 and D2; and two zener diodes ZD1 and ZD2. The number of auxiliary winding turns Na of the transformer Tr ensure that the synchronous rectifiers S3 and S4 are supplied with an adequate gate-drive voltage. When S3 conducts, the gate-drive voltage of S4 is clamped by D1. Likewise, when S4 conducts, the gate-drive voltage of S3 is clamped by D2. ZD1 and ZD2 operate to restrain the gate overvoltage of S3 and S4, respectively. With this design, the self-driven synchronous rectifier circuit operates normally at various output voltages, such as low output voltages of 3.3V or lower and/or high output voltages above 6V.

摘要翻译： 一种自驱动同步整流电路，包括两个电源开关S1和S2; 具有N匝数的初级绕组的变压器Tr，具有N匝数的次级绕组和具有Na匝数的辅助绕组; 两个二次同步整流器S3和S4; 两个二极管D1和D2; 和两个齐纳二极管ZD1和ZD2。 变压器Tr的辅助绕组匝数确保同步整流器S3和S4被提供足够的栅极驱动电压。 当S3导通时，S4的栅极驱动电压被D1钳位。 同样地，当S4导通时，S3的栅极驱动电压被D2钳位。 ZD1和ZD2分别用于限制S3和S4的栅极过电压。 通过这种设计，自驱动同步整流电路在各种输出电压下正常工作，例如3.3V或更低的输出电压和/或6V以上的高输出电压。

公开(公告)号：US08629664B2

公开(公告)日：2014-01-14

申请号：US13511059

申请日：2010-11-15

申请人： Liang'an Ge ,  Xiaoli Yao ,  Guichao Hua ,  Xinke Wu ,  Lijun Ren

发明人： Liang'an Ge ,  Xiaoli Yao ,  Guichao Hua ,  Xinke Wu ,  Lijun Ren

IPC分类号： H02M3/24 ,  G05F1/14

CPC分类号： H05B33/0815 ,  H02M3/33523 ,  H02M2001/0064 ,  H02M2001/008 ,  H05B33/0827 ,  Y10T307/414

摘要： A multi-path constant current drive circuit includes a DC/AC converter, a main transformer and at least two rectifying and filtering units. The main transformer includes at least one assistant side winding with a tap; together with the assistant side winding of the main transformer, each of the at least two rectifying and filtering units respectively forms a power supply loop; each power supply loop includes a first rectifying loop and a second rectifying loop, which are relatively used for the rectification of the positive and the negative half-cycle alternating voltage; a current-equalizing transformer is arranged between the adjacent first power supply loop and second power supply loop, the windings of the current-equalizing transformer are respectively in the rectifying loops contained in the first power supply loop and the second power supply loop, thus realizing the current equalization between the different rectifying loops in which the adjacent rectifying and filtering units are contained. The multi-path constant current drive circuit performs a good current equalization, and can reduce the volume of the current-equalizing transformer and decrease the cost.

摘要翻译： 多路恒流驱动电路包括DC / AC转换器，主变压器和至少两个整流滤波单元。 主变压器包括至少一个带有水龙头的辅助侧绕组; 连同主变压器的辅助侧绕组，至少两个整流滤波单元中的每一个分别形成电源回路; 每个电源回路包括第一整流回路和第二整流回路，其相对用于正和负半周期交流电压的整流; 在相邻的第一电源回路和第二电源回路之间布置有电流均衡变压器，电流均衡变压器的绕组分别在包含在第一电源回路和第二电源回路中的整流回路中，从而实现 其中包含相邻整流和滤波单元的不同整流回路之间的电流均衡。 多路恒流驱动电路实现良好的电流均衡，可以减小电流均衡变压器的体积，降低成本。