Abstract:
A noise dampening energy efficient circuit board includes a carbon material layer for dampening electromagnetic interference between surface mount components and trace patterns of the circuit board. One or more ground plane layers are arranged relative to the carbon material layer to cooperatively dampen and repel noise of varying frequencies. The positioning of the carbon material layer with respect to the ground plane layer enhances the ground plane operation. Glass fiber material layers and other insulating dielectric layers are disposed at particular locations within the noise dampening energy efficient circuit board. The carbon material layer and the ground plane layer dampen electromagnetic noise, thereby permitting energy saving design considerations, increasing energy efficiencies and reducing power consumption. Mounting posts of the surface mount components include insulating sleeves to selectively insulate different layers of the circuit board from surface mount components. Methods for constructing and using the circuit board are also disclosed.
Abstract:
A device and method for manufacturing an integrated real time clock integrated circuit (RTC IC) package is disclosed, in which the RTC IC and its related components are integrated into a single package. Therefore, the layout area required by the integrated RTC IC package is significantly reduced. Also, only a single manual assembling process is required. Furthermore, various examination steps are built into every process to manufacture the integrated RTC IC package to make sure the completed products are in normal condition. No extra examination and fix-up processes are required for the completed products so that manufacturing cost can be significantly reduced.
Abstract:
A electronic circuit board arrangement includes a main circuit board on which components are mounted, with component leads passing through holes in this board. Additional components are provided on an auxiliary circuit board at least part of which is directly against the main board, either on the component side underlying components or on a soldering side of the main board. The additional components are connected to the component leads via conductive tracks on the auxiliary board. The auxiliary board can be flexible to also extend over components on the main board. The arrangement is particularly useful for adding additional components to an original circuit design.
Abstract:
Engineering changes (EC) for an integrated-circuit (IC) module or circuits connected to an IC module sometimes require the addition of discrete electrical components or circuit chips. Such engineering changes are implemented herein on a small printed circuit card or board that may be physically attached to the top of the IC module. The EC pads on the printed circuit EC card are juxtaposed with the IC module input/output (I/O) pins that require the engineering change. A short fly wire is then soldered between each juxtaposed EC pad and the I/O pin to make the electrical connection between the EC card and the module. In this way, no additional surface area is consumed on the printed circuit board on which the module is mounted.
Abstract:
A package assembly which combines metallized ceramic technology and printed circuit board multilayer technology. A plurality of modules on a metallized ceramic substrate have closely spaced pins, for example, on 50 mil centers or grid, are plugged into a complex high precision multilayer printed circuit carrier. The pins are staggered in height with the longer pins having a relatively wide spacing, for example, on 100 mil centers or grid. The longer pins protrude through the high precision carrier and plug into a normal relatively simple and low cost printed circuit card or planar package.
Abstract:
A plug contact for electrically contacting a circuit board by inserting the plug contact into a via hole in the circuit board, the plug contact having two flat contact arms that are resilient relative to each other, and a connecting region, from which the two contact arms extend in the plug-in direction of the plug contact, the plug contact being punched as a single piece from a flat metallic material. In the connection region, adjacent to the two contact arms, a recess is formed in the plug contact, the distance between the two contact arms increases from the recess towards the free ends of the contact arms, the two contact arms being spread apart relative to each other and the two contact arms together having a width which is the same as or only slightly smaller than the diameter of the corresponding via hole in the circuit board.
Abstract:
An electronic device for a motor vehicle includes a metal tubular casing extending longitudinally and opening at its two ends, and a wall having a curved profile with cooling fins on its outer surface. The electronic device includes an assembly of printed circuit boards comprising a first plurality of printed circuit boards that include heat-generating electronic components. The printed circuit boards of the assembly are connected together by flexible conductive elements. The device further comprises a first heat sink arranged inside the tubular casing comprising a curved wall generally extending parallel to the curved wall of the tubular casing. The first plurality of printed circuit boards is interposed between the curved inner surface of the wall of the casing and the curved wall of the first heat sink so heat is dissipated through the first heat sink and through the curved wall equipped with cooling fins of the tubular casing.
Abstract:
In accordance with embodiments of the present disclosure, a circuit board may include a connector configured to electrically couple a device to the circuit board. The connector may include a conductive element configured to be electrically coupled to a first voltage and a detection pad configured to be electrically coupled to a second voltage via a resistor, such that when a device pin of a device is electrically coupled to the conductive element, the detection pad is electrically coupled to the conductive element via the device pin.
Abstract:
An electronic product having a double-PCB sandwich structure includes a PCB assembly, and a casing having an open side. The electronic product is configured such that a protuberance is respectively formed on the inner sides of two side walls of the casing in the longitudinal direction, the PCB assembly comprises an electronic component, a base PCB and a main PCB, the length of the base PCB and the length of the main PCB in the longitudinal direction of the casing are substantially equal to each other and slightly smaller than the length of the casing so that the PCB assembly can be installed into the casing by mating with the protuberances.
Abstract:
An index signal output device where a magnetic flux detector is moved in the direction of a relevant tangent to the circumference of a rotor yoke so that the phase difference between an index signal detected by the magnetic flux detector and an index reference signal previously recorded on a floppy disk is within a prescribed range. The lead terminals of the magnetic flux detector are connected to detection signal output terminals on a printed circuit board, and the magnetic flux detector is moved for adjustment in the direction of the tangent by flexing the lead terminals using a tool.