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 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:
The invention provides an electronic product having a double-PCB sandwich structure, comprising a PCB assembly and a casing having an open side, wherein a protuberance is respectively formed on the inner sides of two side walls of the casing in the longitudinal direction, the PCB assembly consists of 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:
A decoupling capacitor (40) is mounted on a thin auxiliary board (20) and connected by metallization traces (37, 33) on the board to a single pair of plug-in contacts (50, 51) press-fitted into a pair of apertures (36) in a pair of integral tabs (31, 32) extending from the board (30). The auxiliary board (20) and capacitor (40) height is not more than about 0.070 inches. The plug-in contacts (50, 51) are pluggable into a pair of sockets in a printed circuit board. The auxiliary insulative board (20) with its attached capacitor (40) is sandwiched between a surface of a printed circuit board (12) having a plurality of sockets, and the underside of a dual-in-line (DIP) integrated circuit package (11). At least two leads (15a, 14x) of the DIP package (11) are inserted into the pair of insertable contacts (50, 51) in the auxiliary insulative board (20) while the remainder of the DIP package leads are inserted directly into other sockets in the printed circuit board (16a, 16x, 17a, 17x). In one embodiment, other DIP leads pass through clearance holes (69, 68) in a second pair of integral tabs (63, 65). Another embodiment provides for redundant capacitors each connected to separate pairs of contacts (82, 83; 84, 85) on the auxiliary board (81) for interconnection of two ground leads and two power leads of the DIP to respective PC board sockets.