公开(公告)号：US08362753B2

公开(公告)日：2013-01-29

申请号：US12728269

申请日：2010-03-21

申请人： Jie-Jian Zheng

发明人： Jie-Jian Zheng

IPC分类号： G05F1/40 ,  H02M1/12

CPC分类号： H02M1/08

摘要： A switching power supply circuit includes a power circuit, a switching circuit and a load. The switching circuit includes a first filter module, a power processing unit, a stability module, and a second filter module. The first filter module receives a voltage signal from the power circuit and sends a filtered first voltage signal to the power processing unit; the power processing unit outputs a second voltage signal, the stability module stabilizes the second voltage signal and sends a third voltage signal to the second filter module; the second filter module filters the third voltage signal and sends a drive voltage to the load. In response to the second voltage signal instantaneously changing from high to low or low to high, during the change in current, power of the second voltage signal is stored in the stability module and released through the second filter module.

摘要翻译： 开关电源电路包括电源电路，开关电路和负载。 开关电路包括第一滤波器模块，功率处理单元，稳定性模块和第二滤波器模块。 第一滤波器模块从电源电路接收电压信号，并将滤波的第一电压信号发送到功率处理单元; 所述功率处理单元输出第二电压信号，所述稳定模块稳定所述第二电压信号，并向所述第二滤波器模块发送第三电压信号; 第二滤波器模块对第三电压信号进行滤波并向负载发送驱动电压。 响应于第二电压信号瞬间从高电平变为低电平或低电平变为高电平，在电流变化期间，第二电压信号的功率被存储在稳定性模块中并通过第二过滤器模块释放。

公开(公告)号：US08054650B2

公开(公告)日：2011-11-08

申请号：US12386617

申请日：2009-04-20

申请人： Jie-Jian Zheng ,  Tong Zhou

发明人： Jie-Jian Zheng ,  Tong Zhou

IPC分类号： H02M3/335

CPC分类号： H02M3/33569 ,  H02M1/34

摘要： A switching power supply circuit includes a direct current (DC) power supply input, a first transistor, a capacitor, a first resistor, a second resistor, a switching circuit including a second transistor, and a first transformer including a first primary winding and a secondary winding. The DC power supply input is connected to a drain electrode of the first transistor via the capacitor. A gate electrode of the first transistor is connected to ground via the first resistor, and connected to the drain electrode of the first transistor via the second resistor. The DC power supply input is connected to a source electrode of the first transistor via the primary winding. The source electrode of the first transistor is grounded via the second transistor. The secondary winding is structured and arranged to drive a load circuit.

摘要翻译： 开关电源电路包括直流（DC）电源输入，第一晶体管，电容器，第一电阻器，第二电阻器，包括第二晶体管的开关电路，以及包括第一初级绕组和 次级绕组。 直流电源输入经由电容器连接到第一晶体管的漏电极。 第一晶体管的栅电极经由第一电阻器连接到地，并经由第二电阻器连接到第一晶体管的漏电极。 直流电源输入通过初级绕组连接到第一晶体管的源电极。 第一晶体管的源极通过第二晶体管接地。 次级绕组被构造和布置成驱动负载电路。

公开(公告)号：US07848119B2

公开(公告)日：2010-12-07

申请号：US12069921

申请日：2008-02-12

申请人： Jie-Jian Zheng ,  Tong Zhou ,  Jian-Hui Lu

发明人： Jie-Jian Zheng ,  Tong Zhou ,  Jian-Hui Lu

IPC分类号： H02M3/335

CPC分类号： H02M3/3381

摘要： An exemplary DC to DC converter (2) includes a transistor (29), a first rectifying and filtering circuit (21), a pulse generating circuit (27) and a transformer (25). The first rectifying and filtering circuit transforms an external AC voltage to a first DC voltage. The transformer includes a primary winding (251), an assistant winding (252) connected with the primary winding in a flyback mode, and a secondary winding (253). The first DC voltage is connected to ground via the primary winding, the transistor in series. The pulse generating circuit includes a controlling terminal, a diode, a resistor, and a capacitor. One terminal of the assistant winding is connected to ground, and the other terminal of the assistant winding is connected to an anode of the diode. A cathode of the diode is connected to ground via the resistor and the capacitor in series. The controlling terminal is connected to gate electrode of the transistor.

摘要翻译： 示例性DC-DC转换器（2）包括晶体管（29），第一整流和滤波电路（21），脉冲发生电路（27）和变压器（25）。 第一整流滤波电路将外部交流电压变换为第一直流电压。 变压器包括初级绕组（251），以回扫模式与初级绕组连接的辅助绕组（252）和次级绕组（253）。 第一个直流电压通过初级绕组连接到地，晶体管串联。 脉冲发生电路包括控制端子，二极管，电阻器和电容器。 辅助绕组的一个端子连接到地，辅助绕组的另一个端子连接到二极管的阳极。 二极管的阴极通过电阻器和电容器串联连接到地。 控制端子连接到晶体管的栅电极。

公开(公告)号：US20090289881A1

公开(公告)日：2009-11-26

申请号：US12454874

申请日：2009-05-26

申请人： Jie-Jian Zheng ,  Tong Zhou

发明人： Jie-Jian Zheng ,  Tong Zhou

IPC分类号： G09G3/36 ,  H02J3/00

CPC分类号： H02M7/064 ,  Y10T307/406

摘要： A power circuit includes a transformer, a full-bridge rectifier and a feedback circuit. The transformer is used to input an external AC voltage. The transformer includes a plurality of output terminals. The output terminals include a plurality of output terminal combinations, and at least two different output terminal combinations output a first AC voltage and a second AC voltage. The full-bridge rectifier is used to convert the first AC voltage or the second AC voltage into DC voltages. The feedback circuit makes the transformer switch between different output ports combinations according to the value of the second AC voltage.

摘要翻译： 电源电路包括变压器，全桥整流器和反馈电路。 变压器用于输入外部交流电压。 变压器包括多个输出端子。 输出端子包括多个输出端子组合，并且至少两个不同的输出端子组合输出第一AC电压和第二AC电压。 全桥整流器用于将第一交流电压或第二交流电压转换成直流电压。 反馈电路使得变压器根据第二交流电压的值在不同的输出端口组合之间切换。

公开(公告)号：US20090284993A1

公开(公告)日：2009-11-19

申请号：US12454452

申请日：2009-05-18

申请人： Jie-Jian Zheng ,  Tong Zhou

发明人： Jie-Jian Zheng ,  Tong Zhou

IPC分类号： H02M3/335

CPC分类号： H02M3/3385

摘要： A switching power supply circuit includes a direct current (DC) power supply input; a voltage divider connected between the DC power supply input and ground; a transformer including a primary winding, a secondary winding, and an assistant winding; a pulse generating circuit including a first transistor, a second transistor, an oscillation capacitor, and an oscillation resistor; an output; and a feedback circuit adjusting a duty ratio of a pulse signal in the assistant winding. The DC power supply input is grounded via the primary winding, two conducting electrodes of the second transistor. A control electrode of the second transistor is connected to an output of the voltage divider. An output of the voltage divider is connected to a control electrode of the second transistor and is grounded via two conducting electrodes. A control electrode of the first transistor is grounded via the assistant winding and grounded via the oscillation capacitor and the oscillation resistor connected in series.

摘要翻译： 开关电源电路包括直流（DC）电源输入; 连接在直流电源输入和地之间的分压器; 包括初级绕组，次级绕组和辅助绕组的变压器; 脉冲发生电路，包括第一晶体管，第二晶体管，振荡电容器和振荡电阻器; 输出 以及调整辅助绕组中的脉冲信号的占空比的反馈电路。 直流电源输入通过初级绕组接地，第二晶体管的两个导电电极。 第二晶体管的控制电极连接到分压器的输出端。 分压器的输出端连接到第二晶体管的控制电极，并通过两个导电电极接地。 第一晶体管的控制电极通过辅助绕组接地，并通过振荡电容器和串联的振荡电阻器接地。

公开(公告)号：US20080239767A1

公开(公告)日：2008-10-02

申请号：US12079976

申请日：2008-03-31

申请人： Jie-Jian Zheng ,  Tong Zhou ,  Jian-Hui Lu

发明人： Jie-Jian Zheng ,  Tong Zhou ,  Jian-Hui Lu

IPC分类号： H02M3/335

CPC分类号： H02M3/33507

摘要： An exemplary power supply circuit (200) includes a transformer (240), a first transistor (260), a start-up resistor (261), and a pulse generating circuit (250). The transformer includes a primary winding (241), a secondary winding (243), and an auxiliary winding (242). The first bipolar junction transistor includes a collector connected to a first terminal of the primary winding and an emitter grounded. The start-up resistor is connected between a second terminal of the primary winding and a base of the bipolar junction transistor. The pulse generating circuit is configured for generating a control signal according to an induction voltage of the auxiliary winding. The control signal is provided to the base of the first bipolar junction transistor for switching the first bipolar junction transistor.

摘要翻译： 示例性电源电路（200）包括变压器（240），第一晶体管（260），启动电阻器（261）和脉冲发生电路（250）。 变压器包括初级绕组（241），次级绕组（243）和辅助绕组（242）。 第一双极结型晶体管包括连接到初级绕组的第一端子和发射极接地的集电极。 启动电阻连接在初级绕组的第二端子和双极结型晶体管的基极之间。 脉冲发生电路被配置为根据辅助绕组的感应电压产生控制信号。 控制信号被提供到用于切换第一双极结型晶体管的第一双极结型晶体管的基极。

公开(公告)号：US08059433B2

公开(公告)日：2011-11-15

申请号：US12286309

申请日：2008-09-29

申请人： Jie-Jian Zheng ,  Tong Zhou

发明人： Jie-Jian Zheng ,  Tong Zhou

IPC分类号： H02M5/42

CPC分类号： H02M1/4258 ,  Y02B70/126

摘要： An exemplary power circuit includes a first rectifying and filtering circuit, a power factor correction (PFC) circuit, an inverter circuit and a second rectifying and filtering circuit. The first rectifying and filtering circuit receives an AC voltage and transforms the AC voltage to a first DC voltage. The power factor correction circuit includes a first transformer, a first diode and a first storage capacitor. The inverter circuit includes a transistor and a second transformer. A primary winding of the second transformer is grounded via the transistor and receives the first DC voltage via a primary winding of the first transformer, the first diode and a secondary winding of the first transformer in series when the transistor is switched on. The second rectifying and filtering circuit connected to a secondary winding of the second transformer for providing a second DC voltage to a load circuit.

摘要翻译： 示例性电源电路包括第一整流和滤波电路，功率因数校正（PFC）电路，逆变器电路和第二整流和滤波电路。 第一整流滤波电路接收交流电压，并将交流电压变换为第一直流电压。 功率因数校正电路包括第一变压器，第一二极管和第一存储电容器。 逆变器电路包括晶体管和第二变压器。 第二变压器的初级绕组经由晶体管接地，并且当晶体管接通时，通过第一变压器的初级绕组，第一二极管和第一变压器的次级绕组串联地接收第一直流电压。 第二整流滤波电路连接到第二变压器的次级绕组，用于向负载电路提供第二直流电压。

公开(公告)号：US07999489B2

公开(公告)日：2011-08-16

申请号：US12217362

申请日：2008-07-02

申请人： Jie-Jian Zheng ,  Tong Zhou

发明人： Jie-Jian Zheng ,  Tong Zhou

IPC分类号： H05B41/36

CPC分类号： H05B41/2827 ,  H05B41/2822

摘要： An exemplary circuit (200) for driving light sources (211, 212, 213, 214) includes feedback circuits (218, 228, 238, 248), a signal balance circuit, and a controller (250). Each feedback circuit corresponds to a light source and is configured for providing a first feedback signal according to a driving current of the light source. The signal balance circuit is configured for balancing all the first feedback signals and correspondingly generating a second feedback signal. The controller is configured for driving the light sources to illuminate according to the second feedback signal.

摘要翻译： 用于驱动光源（211,212,213,214）的示例性电路（200）包括反馈电路（218,228,238,248），信号平衡电路和控制器（250）。 每个反馈电路对应于光源，并且被配置为根据光源的驱动电流提供第一反馈信号。 信号平衡电路被配置为平衡所有第一反馈信号并相应地产生第二反馈信号。 控制器被配置为根据第二反馈信号驱动光源照亮。

公开(公告)号：US20110062923A1

公开(公告)日：2011-03-17

申请号：US12728269

申请日：2010-03-21

申请人： JIE-JIAN ZHENG

发明人： JIE-JIAN ZHENG

IPC分类号： G05F1/10

CPC分类号： H02M1/08

摘要： A switching power supply circuit includes a power circuit, a switching circuit and a load. The switching circuit includes a first filter module, a power processing unit, a stability module, and a second filter module. The first filter module receives a voltage signal from the power circuit and sends a filtered first voltage signal to the power processing unit; the power processing unit outputs a second voltage signal, the stability module stabilizes the second voltage signal and sends a third voltage signal to the second filter module; the second filter module filters the third voltage signal and sends a drive voltage to the load. In response to the second voltage signal instantaneously changing from high to low or low to high, during the change in current, power of the second voltage signal is stored in the stability module and released through the second filter module.

摘要翻译： 开关电源电路包括电源电路，开关电路和负载。 开关电路包括第一滤波器模块，功率处理单元，稳定性模块和第二滤波器模块。 第一滤波器模块从电源电路接收电压信号，并将滤波的第一电压信号发送到功率处理单元; 所述功率处理单元输出第二电压信号，所述稳定模块稳定所述第二电压信号，并向所述第二滤波器模块发送第三电压信号; 第二滤波器模块对第三电压信号进行滤波并向负载发送驱动电压。 响应于第二电压信号瞬间从高电平变为低电平或低电平变为高电平，在电流变化期间，第二电压信号的功率被存储在稳定性模块中并通过第二过滤器模块释放。

公开(公告)号：US20080180977A1

公开(公告)日：2008-07-31

申请号：US12011977

申请日：2008-01-29

申请人： Jie-Jian Zheng ,  Tong Zhou ,  Jian-Hui Lu ,  Hua Xiao ,  Kun Le

发明人： Jie-Jian Zheng ,  Tong Zhou ,  Jian-Hui Lu ,  Hua Xiao ,  Kun Le

IPC分类号： H02M7/02 ,  G05F1/00 ,  G09G5/00

CPC分类号： H02J9/005

摘要： An exemplary power supply control circuit (200) includes a first port (201), a second port (202), a third port (203), a controllable switch (280), and a control circuit (270). The first and second ports are configured to receive a power supply voltage signal. The second and third ports are configured to output the power supply voltage signal to a load circuit. The controllable switch includes a control member (281) and a switch member (282 ). The control circuit is configured to control a working state of the control member. When the load circuit stops working, the control circuit controls the control member to control the switch member to be disconnected, so as to cut off the power supply voltage signal from outputting to the load circuit. A liquid crystal display (400) using the power supply control circuit is also provided.

摘要翻译： 示例性电源控制电路（200）包括第一端口（201），第二端口（202），第三端口（203），可控开关（280）和控制电路（270）。 第一和第二端口被配置为接收电源电压信号。 第二和第三端口被配置为将电源电压信号输出到负载电路。 可控开关包括控制构件（281）和开关构件（282）。 控制电路被配置为控制控制构件的工作状态。 当负载电路停止工作时，控制电路控制控制构件以控制开关构件的断开，从而将电源电压信号切断输出到负载电路。 还提供了使用电源控制电路的液晶显示器（400）。