Abstract:
The REVERSING TRANSMISSION includes a shaft, a retainer, a spacing collar, a plurality of reversing members, two gears and two covers. The holder is sleeved on the shaft with spaced sliding notches formed thereon. The spacing collar is mounted on an outer surface of the retainer. The reversing members each includes two spaced swing plates with two reversed spiral teeth dented on two diagonal half surfaces of the two spaced swing plate. The reversing members slide into the sliding notches of the holder with two swing plates distributed at different side of the spacing collar. Each of the gears has a group of spiral teeth formed on the inner side for engaging with the group of spiral teeth of the reversing members, and cogs formed on the outer circumference surface. The covers are mounted on two opposite ends of the holder to keep the reversing member in position.
Abstract:
A system and method for removing T-point elements with unused stubs from a printed circuit board (PCB) layout design obtains each signal line including one or more T-point elements in the PCB layout design, divides the obtained signal line into a plurality of lines according to the one or more T-point elements with unused stubs, and obtains properties of each of the plurality of lines. The system and method further deletes the original layout of the signal line and reconnects the plurality of lines according to the properties of each of the plurality of lines to generate a reconnected signal line, and outputs the reconnected signal line on a display device.
Abstract:
Parameters of a radio frequency filter can be changed by changing structure of each component of the filter. Material of each component, diameters of each of magnetic cylinders, density of each of conductive coils, thickness of a dielectric layer, and thickness of an insulation tube can be changed. When any component needs to be replaced, each cover is rotated, with connection partitions moving to two slots of an insulation portion, to detach the filter.
Abstract:
An apparatus for adjusting a differential probe includes a regulator arranged therein capable of adjusting a distance between two tips of the probe. The probe is supported on the apparatus. The apparatus includes a rotatable shaft and a rotatable disk. The rotatable shaft engages with the regulator of the probe. The rotatable disk is mounted surrounding the rotatable shaft and rotatable together with the rotatable shaft. An angular ruler or a radian ruler is described on an outer surface of the rotatable disk to indicate a rotation angle or a rotation radian of the rotatable shaft, therefore the distance between the two tips of the probe are accurately adjusted.
Abstract:
A clamping apparatus includes a motor, a first cone gear secured to a shaft of the motor, and two clamping bodies attached to opposite sides of the motor. Each of the clamping bodies includes a second cone gear meshing with the first, a threaded post fixed to the second cone gear, a carriage threadedly connected with the threaded post, and a clamp arm fixed to the carriage. The motor rotates the first cone gear, and in turn the second cone gears and the corresponding threaded posts. With the rotation of the threaded posts, the carriages move towards or away from each other, whereby the clamp arms cooperatively acquire an object between the clamp arms, or release the object therefrom.
Abstract:
A system for operating a differential probe which includes a first metal extension and a second metal extension having the same structures is disclosed. Each of the metal extensions includes a rotatable arm, a rotatable base, and a contact end. The rotatable base and contact end of each of the metal extensions extend from two ends of the corresponding rotatable arm at an angle, the contact ends and the rotatable bases of the metal extensions are parallel to each other. The system controls a mechanical arm to adjust a vertical distance between the contact ends to be equal to a required vertical distance by rotating the first metal extension around the rotatable base of the second metal extension clockwise by a rotated angle, and rotating the second metal extension around the rotatable base of the first metal extension counterclockwise by the rotated angle.
Abstract:
An overdrive topology structure for transmission of a RGB signal includes a signal sending terminal, a signal receiving terminal, and a transmission line to transmit the RGB signal from the signal sending terminal to the signal receiving terminal. The transmission line is divided into a number of section transmission lines. A node is formed between every two section transmission lines. An impedance of a first section transmission line approaching to the signal sending terminal is less than an impedance of a second section transmission line approaching to the first section transmission line to overdrive the RGB signal at a first node between the first and second section transmission lines. At least one node except the first node is grounded via a resistor. An equivalent resistance of the resistor is equal to a resistance of the first resistor.
Abstract:
A flexible printed circuit board (FPCB) includes a signal layer, upper and lower ground layers, and two dielectric layers. The signal layer includes a differential pair comprising two transmission lines to transmit a pair of differential signal. The dielectric layers are respectively located on and under the signal layer to sandwich the signal layer. The upper ground layer is attached to the dielectric layer on the signal layer. The lower ground layer is attached to the dielectric layer under the signal layer. Each ground layer defines a void therein aligning with the differential pair. Dielectric coefficients of the two dielectric layers are different.
Abstract:
A printed circuit board includes a reference layer, at least one first hole defined in the reference layer and adjacent from a first pin in a first column of pins of an electronic component, and at least one second hole defined in the reference layer and adjacent from a second pin of the electronic component. The at least one second hole is defined in the reference layer and opposite to the at least one first hole. The second pin is in a neighboring second column of pins from the first column of pins. A diameter of the at least one first hole is greater than a diameter of the at least one second hole such that a difference in current flowing through the first pin and the second pin is reduced.
Abstract:
A print circuit board (PCB) includes a voltage regulator module (VRM), a plurality of loads, and a sense location for augmenting the voltage margin of the loads. The VRM is configured for charging the loads. Each load has a weight. The voltage value of the sense location equals to a summation of a corresponding weight value of a corresponding load multiplied by a corresponding voltage value of the load, for each of the plurality of loads on the PCB. An optimization method for the sense location on the PCB is also provided.