Chan Li Machinery Co., Ltd.

Delta Electronics, Inc.

Chan Machinery Co., Ltd.

Chi Hsu

Wei-Hsun Lai

Ke-Cheng Lin

Chi-An Chang

Chao-Liang Tseng

In a radio frequency (RF) amplifier system and a heat dissipation device thereof, the RF amplifier system includes an RF amplifier and a heat dissipation device. The RF amplifier includes an RF power element. The heat dissipation device includes a heat conduction board, a plurality of heat pipes and fins. The heat conduction board is thermally conductively coupled to the RF power element, and one end of the heat pipe is thermally conductively coupled to the heat conduction board. The fins are arranged in parallel and spaced from each other. The other end of each of the heat pipes is inserted through the fins. The heat of the RF power element is conducted to the heat conduction board and the heat pipe, and then the heat is quickly conducted to the fins to be dissipated away quickly, and the RF power element can quickly reach a stable temperature.

Radio frequency amplifier system and heat dissipation device thereof

A method for improving an efficiency of a radio-frequency amplifier includes following steps. A set of predetermined parameters are set. A total circuit parameter is calculated according to the set of the predetermined parameters. A switch stress of a power switch is calculated according to the set of the predetermined parameters and the total circuit parameter. A first curve graph is made according to a duty cycle corresponding to the switch stress. The efficiency is calculated according to the set of the predetermined parameters and the total circuit parameter. A second curve graph is made according to the duty cycle corresponding to the efficiency of the radio-frequency amplifier. A value of the duty cycle is selected according to the first curve graph. The efficiency corresponding to the value of the duty cycle is obtained according to the second curve graph.

Radio-frequency power supply, radio-frequency amplifier and method for improving efficiency of radio-frequency amplifier

A fiber/plastic sheet product cutting-folding machine composed of a cutter, a rotary cutting wheel, one or more differential wheels, a first folding wheel and a second folding wheel is disclosed. The cutter and the rotary cutting wheel are adapted to cut off a fiber/plastic sheet product passing therebetween so that each cut piece of fiber/plastic sheet product has a straight cut edge. The differential wheel enables each two successive cut pieces of fiber/plastic sheet product to be partially overlapped, forming a stack of interfold fiber/plastic sheet product. Subject to the application of the fiber/plastic sheet product cutting-folding machine, each stack of interfold fiber/plastic sheet product is kept neat.

Fiber/plastic sheet product cutting-folding machine

A package bag sealing machine includes a first clamping unit and a second clamping unit respectively connected to a first bracket and a second bracket and movable relative to each other to clamp a package bag therebetween, a first sealing unit, a second sealing unit connected to the second bracket, and a first drive connecting the first sealing unit to the first bracket and controllable to move the first sealing unit toward the second sealing unit for sealing a package bag between the first sealing unit and the second sealing unit. After the first clamping unit and the second clamping unit clamp the package bag to be sealed, they are immovable, preventing stretching the package bag during the sealing operation and increasing the packaging yield.

Package bag sealing machine

A packaging bag line-folding and sealing machine includes a first sealing unit and a second sealing unit for sealing a packaging bag therebetween, a first rocker arm and a second rocker arm mounted at the first sealing unit, a locating block, a first link coupled between the first rocker arm and the locating block, two line-folding units, and two second links coupled between the second rocker arm and the line-folding units for moving the line-folding units to make folding lines on the packaging bag between the first and second sealing units upon movement of the first sealing unit relative to the locating block. The application of the packaging bag line-folding and sealing machine greatly improves the packaging quality of packaging bags, and allows adjustment of the line-folding units to fit different sizes of packaging bags, enhancing user convenience.

Packaging bag line-folding and sealing machine

A web product folding and stacking machine includes two folding line making rolls, two folding fingers, a first carrier unit, a stoppage unit and a holder. The folding line making rolls and the folding fingers are operated to fold up web products on the first carrier unit to form a stack of interfolded web products. Further, there is at least one suction device arranged on the top surface of the first carrier unit to suck the web products nearing the top surface of the first carrier unit and facilitate accurate stacking of the interfolded web products.

Growing community of inventors

Taoyuan, Taiwan

Chi Hsu