公开(公告)号：US08044609B2

公开(公告)日：2011-10-25

申请号：US12317977

申请日：2008-12-31

Applicant: Da Liu

Inventor： Da Liu

IPC: H05B37/02 ,  H05B39/00

CPC classification number: H05B33/086

Abstract: A circuit for controlling light sources comprises a converter, a feedback circuit and a current distribution controller. The converter is operable for converting an input voltage to an output current and for providing the output current to the light sources. The feedback circuit is coupled to the light sources for generating feedback signals indicative of currents flowing through the light sources respectively. The current distribution controller is coupled to the feedback circuit for generating control signals based on the feedback signals respectively so as to regulate the currents of the light sources respectively, and for controlling the converter to regulate the output current based on the feedback signals.

Abstract translation: 用于控制光源的电路包括转换器，反馈电路和电流分配控制器。 转换器可操作用于将输入电压转换为输出电流，并将输出电流提供给光源。 反馈电路耦合到光源，用于产生分别表示流过光源的电流的反馈信号。 电流分配控制器耦合到反馈电路，用于分别基于反馈信号产生控制信号，以分别调节光源的电流，并且用于基于反馈信号控制转换器来调节输出电流。

公开(公告)号：US20100039048A1

公开(公告)日：2010-02-18

申请号：US12229010

申请日：2008-08-18

Applicant: Da Liu ,  ShengTai Lee ,  Youling Li

Inventor： Da Liu ,  ShengTai Lee ,  Youling Li

IPC: H05B37/02

CPC classification number: H05B41/3927 ,  H05B41/2828 ,  Y02B20/186

Abstract: A driving circuit for driving loads includes a switch circuit, a transformer, a current sensing circuit, and an inverter controller. The switch circuit and the transformer are used for converting a DC electric power to an AC electric power so as to energize the loads. The current sensing circuit coupled to the loads generates a feedback current signal indicative of a current flowing through the loads. The inverter controller includes a switch drive circuit, a current regulation circuit receiving the feedback current signal, and a mode controller circuit. The switch drive circuit controls the switch circuit so as to adjust power delivered to the primary winding of the transformer in accordance with the feedback current signal. The mode controller disables the switch circuit through the switch drive circuit if the external signal is in an absence state for a predetermined period.

Abstract translation: 用于驱动负载的驱动电路包括开关电路，变压器，电流感测电路和逆变器控制器。 开关电路和变压器用于将直流电力转换为交流电力以使负载通电。 耦合到负载的电流感测电路产生指示流过负载的电流的反馈电流信号。 逆变器控制器包括开关驱动电路，接收反馈电流信号的电流调节电路和模式控制器电路。 开关驱动电路控制开关电路，以便根据反馈电流信号来调节输送到变压器的初级绕组的功率。 如果外部信号在预定时间段内处于不在状态，则模式控制器通过开关驱动电路来禁止开关电路。

公开(公告)号：US20060202635A1

公开(公告)日：2006-09-14

申请号：US11432784

申请日：2006-05-10

Applicant: Da Liu

Inventor： Da Liu

IPC: H05B41/36

CPC classification number: H05B41/282 ,  H05B41/2827 ,  H05B41/2828 ,  H05B41/3921 ,  Y02B20/183

Abstract: The present invention provides a driving circuit for driving a light source. The driving circuit includes a serial-arranged transformers system having multiple primary windings and secondary windings; a first switch conducting current though a first path and a second switch conducting current though a second path. The first path is a first set of primary windings connected in series and the second path is a second set of primary windings connected in series and the first set of primary transformer windings and the second set of primary transformer windings form the dual primary windings of the transformers respectively. Based on the conduction of each switch, a DC voltage source supplies power to the primary windings of the transformers, which in turn powers on the light source connected to the secondary windings of the transformers.

公开(公告)号：US20050093356A1

公开(公告)日：2005-05-05

申请号：US10726864

申请日：2003-12-02

Applicant: Da Liu

Inventor： Da Liu

IPC: A47C7/64 ,  B60N2/02

CPC classification number: A47C7/64

Abstract: A wheeled chair having a clothes hanger comprises a chair back, a chair seat and a stand. The chair back is connected to the chair seat using an L-shaped fixing frame, and the stand is connected to the chair seat through a tubular axle. The rear side of the chair back is further provided with a height-adjusting device, a cushion device and a clothes hanger for hanging clothes and adjusting the height of the hanger. The cushion device facilitates upward motions of the hanger by pulling upward an adjusting frame of the height-adjusting device. A tendon of a resilient part is pressed to depart indentations of the adjusting frame from blocks on the chair back so that the hanger can move downward. Further, multiple cushioning measures are utilized to assure operation safety of adjusting the hanger's height.

Abstract translation: 具有衣架的轮椅包括椅背，椅座和支架。 椅背使用L形固定框架连接到椅子座上，支架通过管状轴连接到椅子座上。 椅背的后侧还设置有高度调节装置，缓冲装置和用于挂衣服并调整衣架高度的衣架。 缓冲装置通过向上拉高度调节装置的调节框架来促进衣架的向上运动。 按压弹性部分的腱将调节框架的凹痕从椅背上的块排出，使得衣架能向下移动。 此外，采用多种缓冲措施来确保调整衣架高度的操作安全性。