摘要:
The present invention is to provide a printed wiring board which can certainly prevent damage of conductive pattern caused by the terminal. The printed wiring board has a board, a conductive pattern, a through-hole and a non-conductive area. A lead wire of resistance mounted on the printed wiring board is inserted into the through-hole 4. The lead wire projects from a surface of the board, and is bent close to the surface. The non-conductive area is formed into a fan-shaped shape enlarging toward a tip of the lead wire from a center of the through-hole. Since the bent lead wire is arranged on the non-conductive area, the non-conductive area can prevent damage of the conductive pattern which is caused by touching the lead wire to the conductive pattern.
摘要:
Bereitgestellt wird eine Adapterplatte (1) für HF-Strukturen, die dazu eingerichtet ist, zwischen einer Rückseite einer Leiterplatte (2) und einem Reflektor (4) angeordnet zu werden, wobei die Adapterplatte elektrisch leitfähig ist, und die Adapterplatte an jeder Stelle, an der ein Element durch die Leiterplatte auf die Seite der Adapterplatte durchgeführt ist, eine Öffnung (102) oder eine Vertiefung (101) aufweist, wobei mindestens ein Element ausschließlich zur Massekontaktierung durch die Leiterplatte geführt ist.
摘要:
In accordance with the various embodiments disclosed herein, an improved electrical connector footprint, such as on printed circuit boards (PCB), is described. For example, antipads can have a variety of sizes and pairs of differential signal traces can define centerlines that are spaced apart from each other.
摘要:
A multilayer wiring board includes: a first differential wiring (30A) wired to a third signal layer (3C); and a second differential wiring (30B) wired to a ninth signal layer (3I). The multilayer wiring board includes a first differential signal via (12A) and a second differential signal via (12B) that are connected to the first differential wiring. The multilayer wiring board includes a third differential signal via (12C) which is connected to the second differential wiring and a stub (41) of which is terminated above the third signal layer. The multilayer wiring board includes a fourth differential signal via (12D) which is connected to the second differential wiring and a stub of which is terminated above the third signal layer, the first differential wiring wired to pass between the fourth differential signal via and the third differential signal via.
摘要:
A multilayer circuit board, comprising: a plurality of printed circuit board layers arranged stacked together; and a conductively plated via; a surface of a through which the via passes comprises a conducting region surrounding a non-conducting region that is substantially centred around a point where the via intersects the surface; a smallest width dimension, e.g. diameter of the non-conducting region is greater than or equal to 4 times the diameter of the via; the via connects a conductive contact pad on one printed circuit board layer to a conductive contact pad on another printed circuit board layer, with the printed circuit board with the non-conducting region lying between the two connected layers; and the largest width dimension of the conductive contact pads on the surfaces of the printed circuit board layers connected by the via are less than the smallest width dimension of the non-conducting region.
摘要:
Eine Basisplatte (21) für ein Leuchtelement (26) insbesondere für die Lichtwerbung weist - eine erste leitfähige Schicht (23) mit einer ersten Öffnung (32) und eine zweite leitfähige Schicht (24) mit einer zweiten Öffnung (33), und - eine Isolierschicht (22) zwischen der ersten und der zweiten leitfähigen Schicht (23, 24) auf,
wobei ein erstes Befestigungselement (40) durch die erste Öffnung (32) bzw. ein zweites Befestigungselement (41) durch die zweite Öffnung (33) in die Basisplatte (21) derart einfügbar sind, dass das erste Befestigungselement (40) nur an die zweite leitfähige Schicht (24) bzw. das zweite Befestigungselement (41) nur an die erste leitfähige Schicht (24) elektrisch anschließbar sind.
摘要:
The present invention is to provide a printed wiring board which can certainly prevent damage of conductive pattern caused by the terminal. The printed wiring board has a board, a conductive pattern, a through-hole and a non-conductive area. A lead wire of resistance mounted on the printed wiring board is inserted into the through-hole 4. The lead wire projects from a surface of the board, and is bent close to the surface. The non-conductive area is formed into a fan-shaped shape enlarging toward a tip of the lead wire from a center of the through-hole. Since the bent lead wire is arranged on the non-conductive area, the non-conductive area can prevent damage of the conductive pattern which is caused by touching the lead wire to the conductive pattern.
摘要:
A multilayer high-frequency circuit board includes a signal line layer (102) in which a high-frequency signal line (11) is formed, ground layers (101, 103) which are laminated on both sides of the signal line layer, and an interlayer circuit which is provided in the signal line layer and which includes a ground connecting portion (13) connected to the ground layers and a signal line connecting portion (12) connected to the signal line. The interlayer circuit is characterized in that one of the signal line connecting portion and the ground connecting portion surrounds an outer periphery of the other concentrically with the one being separated from the outer periphery of the other along the signal line layer, and an inner periphery of the one and the outer periphery of the other have a similar shape excluding a complete circle.