Abstract:
A circuit board system comprising mechanical protection of electrical components is presented. The circuit board system comprises a circuit board (101) furnished with electrical components (103-111) and a protection element (102) attached to areas of the circuit board which are free from the electrical components. The protection element has thickness in the direction perpendicular to the circuit board and it is shaped to leave the electrical components unscreened in the direction perpendicular to the circuit board. Thus, the protection element constitutes barriers protecting the electrical components but still allows the electrical components to be accessed from the direction perpendicular to the circuit board for example in a flying probe testing. The body of the protection element can be made of same material as the electrically insulating body of the circuit board. Thus, the thermal expansion coefficient of the protection element can be substantially the same as that of the circuit board.
Abstract:
This carbon-fiber-reinforced plastic structure includes: an electroconductive layer (233) formed by being laminated on a carbon-fiber prepreg (231); and an electric-conductor-made jumper (24) that penetrates through the electroconductive layer (233) and the carbon-fiber prepreg (231).
Abstract:
A light emitting device array is provided comprising a printed circuit board on which a plurality of electrode patterns having the same width is formed, a light emitting device package disposed on a predetermined number of electrode patterns and a power supply line disposed on at least one of the remaining electrode pattern except for the predetermined number of electrode patterns.
Abstract:
Es wird eine Widerstandsbaugruppe angegeben, die insbesondere für Mittelspannungs- und Hochspannungsanwendungen geeignet ist. Die Baugruppe weist einen isolierenden, langgestreckten Träger (10) mit zwei gegenüberliegenden Hauptflächen (11, 12) auf. Auf der einen Hauptfläche (11) ist eine erste Widerstandsanordnung (20) vorgesehen, während eine zweite Widerstandsanordnung (30) auf der anderen Hauptfläche (12) vorgesehen ist, die sich beide über die Länge des Trägers (10) erstrecken. Der Träger (10) besitzt eine Vielzahl von integrierten, abtrennbaren Modulen (14), die jeweils miteinander verbunden sind und miteinander verbundene Teile der beiden Widerstandsanordnungen (20) und (30) tragen. An den jeweiligen Enden der Module (14) sind Verbindungsanschlüsse (A - D) für die erste und die zweite Widerstandsanordnung (20, 30) vorgesehen.
Abstract:
In an electronic control device related to the present invention, a current circuit is formed on a printed circuit board 1, and an electric component with lead is soldered to the printed circuit board by a flow soldering method, the electronic control device includes: a copper foil flat pattern 28 forming a soldering surface current pattern at a soldering surface side which is flowed through by current of the current circuit at the soldering surface side of the printed circuit board and exposing copper foil; a through hole 29 formed on the copper foil flat pattern 28; and a jumper lead wire 30 to be mounted on the through hole 29 from the soldering surface side and soldered by the flow soldering method.
Abstract:
A flexible printed wiring board 1 includes a substrate 2, conductor wirings 3 and 4, a coverlay film 5, a jumper wiring 11, and through holes 9 and 10. The conductor wirings 3 and 4 are disposed on a first surface 2a of the substrate 2. The coverlay film 5 covers at least part of the conductor wirings 3 and 4. The jumper wiring 11 electrically connects the conductor wirings 3 and 4 to each other. The through holes 9 and 10 are formed in the substrate 2 and respectively open to the surfaces of the conductor wirings 3 and 4. The jumper wiring 11 is composed of a hardened material of a conductive paste and is formed so that a second surface 2b of the substrate 2 is continuous with respective surfaces 3a and 4a of the conductor wirings 3 and 4 to which the through holes 9 and 10 open.
Abstract:
A printed circuit board (500a-d) is disclosed. The printed circuit board comprises a substrate (200) having a top surface (202) and a bottom surface (203). A ground plane (228) is on the bottom surface. A signal trace (212c) is on the top surface along a first direction. At least two isolated power planes (208,210) are on the top surface adjacent to opposite sides of the signal trace, respectively. A conductive connection (330) along a second direction couples to the two power planes, across the signal trace without electrically connecting to the signal trace, wherein the signal trace doesn't directly pass over any split of the ground plane.
Abstract:
The invention concerns a component for a double-sided printed circuit with non-plated vias, consisting of a part (10) made of electrically conductive material including two elongated pins (12) adapted to pass respectively through two vias of the printed circuit and integral with a flat enlarged portion (11) extending perpendicularly to the elongated pins (12). The invention is useful for electrical connection between two strip conductors of a double-sided printed circuit.
Abstract:
The present invention relates to a device and a method at a printed board for obtaining good transmission qualities in transmission conductors on a predetermined area (10) of the printed board (11). A separate component (1) for signal transmission comprises a conductor (5). The component (1) is mounted, with the conductor facing the printed board (11), over the area (10) of the printed board, which requires good transmissions qualities, whereby an air gap (L) is obtained between the conductor (5) and the printed board (11). Soldering joints (21) connect each one of the outer parts (7a, 7b) of the conductor (5) of the component (1) to corresponding pattern conductors (17a, 17b) on the printed board (11). The thickness of the soldering connections and the thickness of the pattern conductors form the air gap (L) between the conductor (5) and the printed board (11). In an alternative embodiment according to the invention, a groove (23) is milled out of the printed board (11) under the conductor (5), obtaining an enlarged air gap between the conductor (5) and the printed board (11).