公开(公告)号：US20110248027A1

公开(公告)日：2011-10-13

申请号：US12801410

申请日：2010-06-08

Applicant: Lien-Hsing Chen ,  Chih-Chi Chang ,  Hui-Hung Hsiang

Inventor： Lien-Hsing Chen ,  Chih-Chi Chang ,  Hui-Hung Hsiang

IPC: H05B6/36

CPC classification number: H05B3/40

Abstract: A heating coil includes at least one winding having a plurality of approach portions. Each of the approach portions is close to a workpiece surrounded by the winding. The winding defines two electrodes at two ends thereof for electric connection with a high-frequency power source. Accordingly, the workpiece can be heated more equably than that of the prior art.

Abstract translation: 加热线圈包括具有多个接近部分的至少一个绕组。 每个接近部分靠近由绕组包围的工件。 绕组在其两端限定两个电极，用于与高频电源电连接。 因此，可以比现有技术更加平均地加热工件。

公开(公告)号：US20130328543A1

公开(公告)日：2013-12-12

申请号：US13567527

申请日：2012-08-06

Applicant: Lien-Hsing CHEN ,  Li-Hao Liu ,  Cheng-Te Tsai

Inventor： Lien-Hsing CHEN ,  Li-Hao Liu ,  Cheng-Te Tsai

IPC: G05F3/04

CPC classification number: H02M7/003 ,  H01F5/00 ,  H01F27/292 ,  H01F27/402 ,  H01F2027/297 ,  H02M3/00 ,  H05K1/144 ,  H05K1/145 ,  H05K1/148 ,  H05K1/18 ,  H05K1/189 ,  H05K3/3405 ,  H05K3/3447 ,  H05K3/403 ,  H05K2201/042 ,  H05K2201/047 ,  H05K2201/09181 ,  H05K2201/1003

Abstract: A miniaturized voltage-transforming device includes a first circuit board and a second circuit board parallel to and separated from each other by a predetermined distance so that there is no physical connection therebetween, and a transformer having a plurality of primary-side pins and a plurality of secondary-side pins, wherein the transformer is located beside the first circuit board and the second circuit board, and has its primary-side pins and secondary-side pins directly or indirectly connected to the first circuit board and the second circuit board physically, so that the transformer is electrically connected to the first circuit board and the second circuit board via the primary-side pins and the secondary-side pins.

Abstract translation: 小型化电压转换装置包括第一电路板和彼此平行并分离预定距离的第二电路板，使得它们之间不存在物理连接，以及具有多个初级侧引脚和多个 其中所述变压器位于所述第一电路板和所述第二电路板旁边，并且其初级侧引脚和次级侧引脚在物理上直接或间接地连接到第一电路板和第二电路板， 使得变压器经由初级侧引脚和次级侧引脚电连接到第一电路板和第二电路板。

公开(公告)号：US20110277277A1

公开(公告)日：2011-11-17

申请号：US12801007

申请日：2010-05-17

Applicant: Lien-Hsing Chen ,  Hui-Hung Hsiang

Inventor： Lien-Hsing Chen ,  Hui-Hung Hsiang

IPC: F16B2/00

CPC classification number: H01L23/4093 ,  F16B5/0635 ,  H01L2924/0002 ,  Y10T24/31 ,  H01L2924/00

Abstract: A fastener for fastening a heat sink and a heat-generating element includes a bended flexible main body, an upper hook portion, and a lower hook portion. The heat sink includes a plurality of fins. The upper hook portion extends from an upper end of the main body for matching the fins and hooking the heat sink. The lower hook portion extends from a lower end of the main body for hooking the heat-generating element.

Abstract translation: 用于紧固散热器和发热元件的紧固件包括弯曲的柔性主体，上钩部分和下钩部分。 散热片包括多个散热片。 上钩部分从主体的上端延伸，以匹配翅片并钩住散热器。 下钩部分从主体的下端延伸以钩住发热元件。

公开(公告)号：US20090135634A1

公开(公告)日：2009-05-28

申请号：US12071954

申请日：2008-02-28

Applicant: Lien-Hsing Chen ,  Li-Hao Liu

Inventor： Lien-Hsing Chen ,  Li-Hao Liu

IPC: H02M7/217

CPC classification number: H02M3/33592 ,  Y02B70/1475

Abstract: A synchronous rectifier drive circuit includes a primary side and a secondary side. The primary side has a first coil winding, a first MOSFET, an auxiliary MOSFET, an auxiliary capacitor, and an input power source. The secondary side has a second coil winding, a DC voltage source, a second MOSFET, a third MOSFET, a fourth MOSFET, a fifth MOSFET, and an inductor. The gate of the second MOSFET is connected with the source of the fourth MOSFET. The gate of the third MOSFET is connected with the source of the fifth MOSFET. The inductor has two ends, one of which is connected with the drain of the third MOSFET. Accordingly, the synchronous rectifier drive circuit can lessen the variation of pulse wave of the drive voltage and refrain the surge voltage to protect the electronic elements.

Abstract translation: 同步整流器驱动电路包括初级侧和次级侧。 初级侧具有第一线圈绕组，第一MOSFET，辅助MOSFET，辅助电容器和输入电源。 次级侧具有第二线圈绕组，DC电压源，第二MOSFET，第三MOSFET，第四MOSFET，第五MOSFET和电感器。 第二个MOSFET的栅极与第四个MOSFET的源极连接。 第三个MOSFET的栅极与第五个MOSFET的源极连接。 电感器具有两端，其中一端与第三MOSFET的漏极连接。 因此，同步整流器驱动电路可以减小驱动电压的脉冲波的变化，并且避免浪涌电压来保护电子元件。

公开(公告)号：US20050219873A1

公开(公告)日：2005-10-06

申请号：US10846685

申请日：2004-05-17

Applicant: Lien-Hsing Chen ,  Lien-Chien Ke

Inventor： Lien-Hsing Chen ,  Lien-Chien Ke

IPC: H02M3/335

CPC classification number: H02M3/33592 ,  Y02B70/1475

Abstract: A flyback converter is comprised of a primary side and a secondary side. The primary side includes a primary winding and a switch both connected in series. The secondary side includes a secondary winding, a tertiary winding, a first resistor, a capacitor, a second resistor, and an MOSFET (metal-oxide-semiconductor field-effect transistor). The first resistor, the capacitor, and the second resistor are connected in series and together connected in parallel with the tertiary winding. The MOSFET is connected in parallel with the first resistor at its gate and source. Accordingly, when the switch is turned on/off, the power energy provided at the primary side can be transferred to the secondary side in a flyback manner.

Abstract translation: 反激转换器由初级侧和次级侧构成。 初级侧包括串联连接的初级绕组和开关。 次级侧包括次级绕组，三次绕组，第一电阻器，电容器，第二电阻器和MOSFET（金属氧化物半导体场效应晶体管）。 第一电阻器，电容器和第二电阻器串联连接并且与三次绕组并联连接。 MOSFET的栅极和源极与第一个电阻并联连接。 因此，当开关打开/关闭时，设置在初级侧的动力能量可以以回扫方式传递到次级侧。

公开(公告)号：US08649190B2

公开(公告)日：2014-02-11

申请号：US13104803

申请日：2011-05-10

Applicant: Lien-Hsing Chen ,  Li-Hao Liu

Inventor： Lien-Hsing Chen ,  Li-Hao Liu

IPC: H02M3/335

CPC classification number: H02M3/33592 ,  H02M2001/0032 ,  Y02B70/1475 ,  Y02B70/16

Abstract: A power converter includes a DC power source, a transformer having a first winding, a first MOSFET and a PWM controller at the primary side and a second winding, a drive control unit, a current detection control unit, a comparator and a second MOSFET at the secondary side. The comparator has its input end electrically connected to the current detection control unit and its output end electrically connected to the drive control unit, which is electrically connected to the second MOSFET for synchronous rectification. The second MOSFET is electrically connected to one end of the second winding, having a body diode built therein. The second winding and the second MOSFET constitute a combination circuit electrically connected to a load that has a capacitor electrically connected thereto in a parallel manner. By means of the aforesaid arrangement, conduction loss at a low load is minimized, thereby improving the efficiency at a low load.

Abstract translation: 电力转换器包括直流电源，具有第一绕组的变压器，初级侧的第一MOSFET和PWM控制器以及第二绕组，驱动控制单元，电流检测控制单元，比较器和第二MOSFET， 二次侧。 比较器的输入端电连接到电流检测控制单元，其输出端电连接到驱动控制单元，驱动控制单元电连接到用于同步整流的第二MOSFET。 第二MOSFET电连接到第二绕组的一端，其中内置有体二极管。 第二绕组和第二MOSFET构成电连接到具有与之并联的电容器的负载的组合电路。 通过上述布置，低负载下的导通损耗最小化，从而提高了低负载时的效率。

公开(公告)号：US07894214B1

公开(公告)日：2011-02-22

申请号：US12588183

申请日：2009-10-07

Applicant: Lien-Hsing Chen ,  Li-Hao Liu

Inventor： Lien-Hsing Chen ,  Li-Hao Liu

IPC: H02M3/335

CPC classification number: H02M3/33592 ,  Y02B70/1475

Abstract: A power converter includes at least one electric control switch, an electric current detecting and converting unit, a power controller, and a voltage detecting and controlling unit at the primary side; and a synchronous rectifying circuit, two MOSFETs, and an oscillating loop. During the actual operation, electric current detecting and converting unit outputs an AC voltage signal to the power controller and outputs a DC voltage signal to the voltage detecting and controlling unit, and then voltage detecting and controlling unit compares with a reference voltage to turn off the synchronous rectifying circuit at the no-load mode and to rectify via a body diodes of the MOSFETs. Accordingly, the power converter can reduce the power wastage at the no-load mode to be energy-saving.

Abstract translation: 功率转换器包括至少一个电气控制开关，电流检测和转换单元，功率控制器和初级侧的电压检测和控制单元; 和同步整流电路，两个MOSFET和一个振荡环路。 在实际操作中，电流检测和转换单元向功率控制器输出交流电压信号，并向电压检测和控制单元输出直流电压信号，然后电压检测和控制单元与参考电压进行比较，以关断 同步整流电路，并通过MOSFET的体二极管进行整流。 因此，功率转换器可以将空载时的功率损耗降低到节能。