Abstract:
An integrated circuit (IC) having a plurality of IC modules, each IC module having attachment surfaces to which elements of the IC are attached, and each IC module having interlocking edges adjacent to the attachment surface. The interlocking edges of adjacent IC modules are interlocked to form a structural connection between the IC modules. The interlocking edges are a plurality of teeth and recesses, which are arranged in rows. The teeth are securely received by a respective recess in an adjacent interlocking edge to create a structural connection between adjacent IC modules. In addition, the interlocking edges can be a ridge member or a ridge recess, where the ridge member or ridge recess is securely received by a respective ridge recess or ridge member of an adjacent IC module to create a structural connection between the IC modules. The interconnection edge can also be a combination of the ridge member, ridge recess, and/or the rows of teeth and recesses. The attachment surfaces of adjacent IC modules can be co-planar and non-planar, depending on the shape desired. The elements on the IC modules communicate using external pathways and/or internal pathways using conventional wire-bond techniques or using conductive layers within the IC module. The IC module is formed of conventional Si wafers. Using this configuration, an IC can be constructed that utilizes less real estate, fits in non-planar spaces in a housing, and has improved speed due to reduced pathway lengths.
Abstract:
A multi-axis magnetometer is provided having three magnetic field sensing circuits for sensing a magnetic field along the X, Y and Z axes. Each magnetic field sensing circuit includes an operational amplifier and a bridge chip having at least one electrical conductor. The operational amplifier is electrically connected to the at least one electrical conductor of the bridge chip for receiving a portion of a current flowing through the at least one electrical conductor. The operational amplifier provides an output voltage based on a magnitude of the portion of the current flowing through the at least one electrical conductor. The multi-axis magnetometer further includes a voltage regulator for providing an operating voltage. A method is also provided for fabricating the multi-axis magnetometer which includes the steps of providing at least one bridge chip having at least one electrical conductor on a motherboard; providing at least one operational amplifier to the motherboard; electrically connecting the at least one electrical conductor to the at least one operational amplifier; providing at least one bridge chip having at least one electrical conductor on a daughterboard; providing at least one operational amplifier to the daughterboard; electrically connecting the at least one electrical conductor of the at least one bridge chip on the daughterboard to the at least one operational amplifier on the daughterboard; and attaching the daughterboard to the motherboard.
Abstract:
A method of making a circuit board (10) on which surface electronic components (15) are mounted during the method using a solder reflow process. The board comprises a circuit portion (12), a surrounding circumferential portion (13) and at least one elongated opening (14) formed in the surrounding circumferential portion substantially parallel to the direction that the board travels during the reflow direction (16), thereby preventing electronic component soldering failures that may occur as a result of the deflection of the circuit board during the reflow process.
Abstract:
An improved board ID number display mechanism whereby an LCD or LED or similar display is utilized on the backplane of a circuit card. The display is viewable for outside the computer case, making it possible to ascertain the board's ID number without having to open up the computer case and examine jumper or switch patterns.
Abstract:
The electrical unit has a printed circuit board (10) supporting the circuit, which includes a power component (11) which generates heat. In order to dissipate this heat from the power component, the power component rests on a heat conductive layer (13) which in turn is applied to the upper side (12) of the printed circuit board. This heat conductive layer further has a portion of the lid (18, 19) of the housing resting on it, which serves as a cooling area. Alternatively, the cooling area can be a free-standing cooling element. The heat transfer thus takes place via the heat conductive layer (13) to the cooling element (18, 19) so that the latter may be applied and formed independently of type and form of the power component.
Abstract:
Anodized aluminum anode and cathode foils are interleaved in a stack separated by spacers saturated with electrolyte in an enclosure. The anode foils and cathode foils have tabs which protrude from the housing and are cold welded to leads outside the housing, where they are not exposed to electrolyte. This permits using copper leads, which can be soldered to traces on a printed circuit board. A flat capacitor can be fixed underneath a PCB or even used as the substrate for a circuit, resulting in high volume efficiencies and the possibility of using it as a heat sink for other components.
Abstract:
There is provided a printed circuit board including (a) at least one dielectric layer, (b) at least two metal layers one of which acts as a ground layer, another one of which acts as a power-supplying layer, and the others of which, if any, act as a wiring layer in which a signal pattern is formed, the dielectric layer and the metal layers being alternately formed one on another, and (c) at least one resistor disposed at a marginal end of the printed circuit board between the ground layer and the power-supplying layer, the resistor having a function of disallowing current communication between the ground layer and the power-supplying layer. The above-mentioned printed circuit board prevents fluctuation in a voltage between ground and a power-supply, and further prevents unintentional electromagnetic interference and circuit malfunction caused by invasion of external electromagnetic field thereinto.
Abstract:
A universal connector pad is intended for use on a printed circuit board and is used to connect a variety of connector types to the printed circuit board, without having to provide a specific connector pad layout which is unique to a specific connector type. The connector pad includes multiple rows and columns of solder pads, which receive a variety of connectors, wherein at least some of the solder pads are usable by more than one type of connector.
Abstract:
A conductive component for carrying electrical signals constructed from a molded polymer substrate and a conductive coating adhered to the substrate, the coating defining a continuous electrical pathway between at least two terminals. Preferably, molded plastic such as liquid crystal polymer is formed to make circuits having conductive ink adhered thereto in order to provide inexpensive and versatile printed circuit boards for carrying electrical traces and other components and to provide printed formed contacts. The conductive solderable inks can be adhered to the substrate, for example, via screen printing, brush, spraying, dipping, masking, vacuum plating or vacuum deposition with subsequent oven drying, reflowing in a vapor phase, post curing or plating.
Abstract:
Electronic components utilize the waste areas of panelized circuit boards to provide self-fixturing of the components to the circuit boards prior to soldering. The components, connectors in particular, include a main body or housing intended to remain with the circuit board after assembly and one or more locator tabs extending from the housing into the waste area or areas of the panelized circuit board. A weakened area located between the housing and the locator tab facilitates separation of the locator tab from the housing and permits the locator tab or tabs to be easily removed at the same time the waste area of the circuit board is removed from the useful area.