摘要:
A carrier tape structure including a belt-shaped tape body, a plurality of carrier boxes, and a plurality of protruding ribs is provided. The carrier boxes are disposed separately on the tape body, and the protruding ribs are in strip shape and are disposed between the carrier boxes. The material around the protruding ribs has lower strength so that the tape body can be bent along the peripheries of the protruding ribs. A plurality of chains is disposed along two sides of the tape body, and the chains can be hung onto a winding machine so that the carrier tape structure can be winded on the winding machine without damaging the carrier boxes.
摘要:
A circuit board structure includes a dielectric layer, a first metal layer, a second metal layer and a first ferrite element. The first metal layer is disposed on an upper surface of the dielectric layer and has a first circuit area, a second circuit area and a first metallic neck connecting the first circuit and the second circuit areas. The second metal layer is disposed on a lower surface of the dielectric layer and has a third circuit area, a fourth circuit area and at least a second metallic neck connecting the third circuit and the fourth circuit areas. The orthogonal projections of the first and the second metallic necks on the upper surface are not overlapped. The first ferrite element is disposed on the upper surface and overlays at least one of the orthogonal projections of the first and the second metallic necks on the upper surface.
摘要:
A circuit board structure includes a dielectric layer, a first metal layer, a second metal layer and a first ferrite element. The first metal layer is disposed on an upper surface of the dielectric layer and has a first circuit area, a second circuit area and a first metallic neck connecting the first circuit and the second circuit areas. The second metal layer is disposed on a lower surface of the dielectric layer and has a third circuit area, a fourth circuit area and at least a second metallic neck connecting the third circuit and the fourth circuit areas. The orthogonal projections of the first and the second metallic necks on the upper surface are not overlapped. The first ferrite element is disposed on the upper surface and overlays at least one of the orthogonal projections of the first and the second metallic necks on the upper surface.
摘要:
A structure for protecting and guiding a flat cable connected between a traveling module and a protective cover of a scanner is disclosed. The protective structure includes an anti-bending member mounted onto the traveling module for preventing the flat cable from being over-bent at its first end. A guide channel member is disposed on the protective cover under the flat cable and along the moving direction of the traveling module for guiding the flat cable during moving of the traveling module and preventing the flat cable from being swung left and right. The second end of the flat cable is extended into the protective cover via a protective sheath fitted on the cover for preventing the second end of the flat cable from excess bending angle and keep the flat cable smoothly moving without deflection.
摘要:
The invention discloses an improved structure of light-source module, which arranges a reflection piece of light-source module in an image picking-up device of optical scanner. The invention applies the design of improved reflection piece to generate a compensatory function to the light source to reduce the waste formed by the light dissipation, which will be gathered by the reflection piece and be reflected to the document to be scanned. With the design of appropriate angle and position, the reflection piece may completely reflect the light onto the document to be scanned for obtaining a preferable quality of scanned image. Wherein, the reflection piece may be designed as two pieces, one of which may reach the function of light compensation, or one reflection piece may be designed as two reflection parts, one of which may reach the function of light compensation.
摘要:
A method for suppressing the resonant effect between capacitors connected in parallel is disclosed. By adjusting the length of the transmission line of the shunt capacitors, the performance of the shunt capacitors, which can be applied on various types of filtering circuits, can be improved in the desired bandwidth.
摘要:
A paper-separating plate is adapted for a paper-separating mechanism having a paper-separating roller. The paper-separating plate placed around a side of the paper-separating roller comprises a main body and a cushion. The main body has a surface and a plurality of grooves and the grooves are positioned on the surface. The cushion is positioned on the surface of the main body and covers the grooves. The cushion positioned over the partial grooves is elastically pressed onto the paper-separating roller. The grooves are linear and the direction of extending the linear grooves is substantially parallel with the axis of the paper-separating roller, the linear grooves neighboring one another or each other. Besides, the cushion is made of flexible material and the main body is made of rigid material.
摘要:
A signal transmitting apparatus being used in a network device includes a voltage-controlled current source for outputting a current signal according to an input digital signal; a line driver for outputting a voltage signal according to the current signal; at least one impedance-matching unit, which is coupled to the line driver, for impedance-matching at the output of the line driver; and a first correction unit, which is coupled to the voltage-controlled current source, for outputting a first correction signal to adjust the current signal outputted from the voltage-controlled current source.
摘要:
A network transmitter and an associated transmitting method are disclosed. The network transmitter includes a signal converter and a signal driver. The former can convert an input signal into a current signal, and the latter can output a differential transmission signal according to the current signal. The signal driver includes a feedback network which can switch between a first configuration and a second configuration.
摘要:
A multi-layer printed circuit board having a low noise characteristic, the multi-layer printed circuit board includes at least one circuit layer; at least one isolation line for dividing the at least one circuit layer into at least two areas, the at least one isolation line forming an open pattern and the at least one isolation line extendedly forming a long neck line into the at least one area; and at least one capacitor placed at one side of the opening of the open pattern in any one of the areas.