摘要:
A system and method for measuring performance of an electronic product using a measurement control device that connects to a measuring machine and a display device. A component of the electronic product is determined according to a coordinate array, and a physical factor of the component to measured is determined according to performance specifications of the electronic product. A sensor corresponding to the physical factor of the component is selected from sensors of the measuring machine, and a physical factor of each the component is measured by the selected sensor. The system indicates whether the electronic product is workable or unworkable by comparing the physical factors of the components with the performance specifications of the components, and generates a measurement report for evaluating the performance of the electronic product according to the indication results.
摘要:
An exemplary actuating mechanism includes a driving shaft and a driven shaft. The driving shaft includes a connecting end. Engaging blocks are formed on the connecting end with a clearance defined between each two neighboring engaging blocks. The driven shaft includes a pivot end. Protruding blocks are formed on the pivot end with a gap defined between each two neighboring protruding blocks. The driving shaft is connected with the driven shaft via the engaging blocks of the connecting end respectively engaged in the gaps and the protruding blocks of the pivot end respectively engaged in the clearances.
摘要:
An exemplary manipulator of a robot includes a fastening seat defining two guiding grooves, a driving mechanism disposed on the fastening seat, two transmitting plates respectively received in the two guiding grooves and cooperating with the driving mechanism, and two detecting bars each fixedly connecting with a corresponding transmitting plate. A detecting pin is fixed on each of the detecting bars. Under a driving action of the driving mechanism on the transmitting plates, the transmitting plates are activated to slide in the guiding grooves to cause the detecting bars to move close to or apart from each other, whereby a distance between the two detecting pins is automatically regulated.
摘要:
A computing device and a method measures scattering parameters (S-parameters) values at ports of a circuit at different signal frequencies, and creates a non-common-pole rational function of S-parameters by applying a vector fitting algorithm to the S-parameters. A matrix of the non-common-pole rational function is converted to a state-space matrix, and the state-space matrix is substituted into a Hamiltonian matrix. The device and method further analyzes if eigenvalues of the Hamiltonian matrix have pure imaginaries, to determine if the non-common-pole rational function of the S-parameters satisfies a passivity requirement.
摘要:
A printed circuit board includes a first to a fifth connector pads, a first to an eighth coupling capacitor pads, a first to a tenth transmission lines, a first via and a second via, a first to a fourth sharing pads, and a voltage converting circuit. The printed circuit board is operable to selectively support different types of connectors.
摘要:
A printed circuit board includes an insulation layer and a signal layer attached to the insulation layer. The signal layer includes a pair of differential transmission lines. Width W of each of the differential transmission lines is changed according to change of space S between the differential transmission lines, based on the following formula: W = C 1 × H × ( C 2 × H 0.8 W 0 + T ) C 3 × ⅇ C 4 × S 0 H - 1 1 - C 3 × ⅇ C 4 × S H - 1.25 T In above formula, C1=7.475, C2=5.98, C3=0.48, C4=−0.96, H is a thickness of the insulation layer, W0 is an original width of each of the differential transmission lines, and S0 is an original space between the differential transmission lines, and T is a thickness of each of the differential transmission lines.
摘要翻译:印刷电路板包括绝缘层和附着到绝缘层的信号层。 信号层包括一对差动传输线。 差分传输线路的宽度W根据以下公式根据差分传输线路之间的空间S的变化而变化:W = C1×H×(Cé2×H 0.8W 0 + T)C uch 3×ⅇC ud 4×S 0 H-1 1 -C3×ⅇC ud 4×SH-1.25T在上式中,C1 = 7.475,C2 = 5.98,C3 = 0.48,C4 = -0.96,H是绝缘层的厚度,W0是差分传输线的原始宽度,S0是差动传输线之间的原始空间,T是各个差分传输线的厚度 差动传输线。
摘要:
A computing system includes a drawing unit and a layout unit. The computing system sets components parameters to components of a circuit diagram of a printed circuit board (PCB). The drawing unit draws the circuit diagram by using the components with the components parameters. If the drawing unit wants to use a component more than once, the computing system copies the component and the corresponding components parameters. The drawing unit uses the copied components and the corresponding parameters. If the circuit diagram has been drawn, the layout unit loads the circuit diagram and wires the PCB according to the components and the components parameters in the circuit diagram.
摘要:
In a method for verifying a printed circuit board (PCB) layout using a computing device, a PCB simulation file is obtained from a storage device of the computing device, and a PCB image is displayed on a display device according to the PCB simulation file. The PCB image includes multiple signal lines and switching voltage regulator nodes (SVRN). A SVRN to be checked is selected from the PCB image, and all signal lines around the SVRN are searched. The method calculates a layout distance between the selected SVRN and each of the searched signal lines, and generates a graphical window interface to position a signal line whose layout distance is equal to or less than the minimum distance. The method further modifies the layout of the positioned signal line to satisfy a layout design specification by increasing the layout distance to the minimum distance.
摘要:
A robot arm includes a circular rack, an elongated first mounting member attached to the rack, and a second mounting member attached to the first mounting member. The first mounting member extends in a radius direction of the rack and moves in a circular trace along the rack. The second mounting member slides relative to the first mounting member along the radius direction, thereby defining a polar coordinate system in a plane defined by the rack to allow the second mounting member to flexibly locate at any desired positions in the plane.
摘要:
In a method for inspecting the layout of a printed circuit board (PCB), a component to be checked is determined from an electronic layout diagram of the PCB, and a power transmission line which may be serving that component is selected. The layout diagram is checked to determine whether the component is connected to the power transmission line, and further checked to determine whether more than one ground pins of the component is connected to the power transmission line. Vias that are shared by two or more ground pins of the component are determined if more than one ground pin is connected to the power transmission line. Shared vias are marked on the layout diagram.