30results about How to "No potential difference" patented technology

A switching device provided herewith includes first to fourth semiconductor layers and a gate electrode. The second semiconductor layer is of a first conductive type or an un-dope type and located on the first semiconductor layer. A hetero junction is formed between the first and the second semiconductor layers. The third semiconductor layer is of a second conductive type and located on the second semiconductor layer. The fourth semiconductor layer is of a second conductive type and located on the third semiconductor layer. A hetero junction is formed between the third and the fourth semiconductor layers. The gate electrode electrically connected to the fourth semiconductor layer.

The present invention relates to a mother substrate and a method for manufacturing the same, the mother substrate comprising: a substrate, comprising at least one display region and pre-cutting regions in a periphery of the display region, wherein the display region comprises gate scanning lines and data scanning lines, the pre-cutting regions comprise a gate-line connecting line and a data-line connecting line electrically connected to each other, and the gate-line connecting line is electrically connected to all of the gate scanning lines in the display region, and the data-line connecting line is electrically connected to all of the data scanning lines in the display region substrate.

The invention belongs to the technical field of micro-nano manufacturing, and discloses an electrostatic focusing electro-fluid jet printing device and method. The device comprises a base, an adjusting cylinder, a nozzle and an electrostatic lens, wherein the adjusting cylinder comprises a cylinder body and a platform arranged below the cylinder body, the base is arranged in the adjusting cylinderand is fixedly connected with the adjusting cylinder through a fastening screw, moreover, a through hole is formed in the base in the vertical direction, the nozzle comprises a pinpoint and a nozzlebody for fixing the pinpoint, the nozzle body is arranged in the through hole and is fixedly connected with the base, and the electric lens comprises an upper electrode ring, an insulating ring and alower electrode ring which are sequentially arranged. The invention provides an electrostatic focusing electro-fluid jet printing method. According to the electrostatic focusing electro-fluid jet printing device and method, the electrostatic lens is integrated into an electro-fluid jet printing spray head so that higher-precision and higher-resolution printing can be achieved, moreover, printing on a insulation base plate or a free-form surface can be simultaneously achieved, the operation is simple and convenient, the printing resolution is high, and the adaptability is high.

The invention provides a socket connector which utilizes a reinforced metal component for protecting a contact with outside forces and can reliably and electromagnetically shield the flowing contact of high-frequency signals. On the reinforced metal component with a reinforcing cover covering one part of the surface of a protruding plate part, a contact pad exposed out of one part of the outer periphery of a housing main body is integrally formed, and is contacted with a shielding housing metal component along the outer periphery of housing main body.

The invention relates to a ground wire junction method for a spiral two-stage pre-finish welding set. The method includes the steps that (1) appropriate locations are found for prepared busbars, and an occupied lot which has the shortest straight-line distance with a conductive brush connector bar and is sufficient for a support to be installed in spatial position is selected for placement, and the support is manufactured and fixed on site; (2) the prepared busbars are installed on the support to be insulated, and the busbars and the fixed support need to be connected through insulating materials; (3) ground wire cable ends connected out of a welding machine are placed at the lower ends of the busbars, connectors are pressed, then the lengths of prepared cables are measured, the connectors are pressed, and the two busbars are connected in series through the corresponding cables; (4) the distance between the busbars and a welding base wire brush wiring board is measured, the cables are used for manufacturing connecting lines, opening and closing of a ground wire brush need to be considered in the manufacturing process, and allowance is required on the aspect of the lengths of the connecting lines; (5) the connecting cables and earthed brush wiring boards are connected, and all bolts are tightened; and (6) insulativity of all the insulated portions is checked and the process is completed if no problems are found.

Flanges, outer cups and inner cups with innovative embodiments can also be made with the same molding process, improving the characteristics of the traditional brushes.

The invention discloses a shielding structure of a voltage transformer. The voltage transformer is a 10kV voltage transformer with a fuse; the voltage transformer comprises a voltage transformer body; epoxy resin is cast on the transformer body; a phase A terminal and a phase B terminal of the voltage transformer are buried in the epoxy resin; the phase A terminal is electrically connected with the phase A primary terminal through a conducting wire. The shielding structure is characterized by comprising a first installing embedding element, a second installing embedding element and a shielding net assembly; the phase A primary terminal is connected with the second installing embedding element through a fuse; the first installing embedding element is connected with the second installing embedding element through an equipotential connection wire; the shielding net assembly is positioned between the phase A primary terminal and the second installing embedding element; in addition, the shielding net assembly is embedded in the epoxy resin. Through the shielding structure of the voltage transformer, no potential difference exist in the epoxy resin; the discharging generating mechanism is eliminated; further, the external discharging phenomenon due to structure reasons can be avoided; the electric performance defects inside the product can be better judged.