Abstract:
A printed circuit board upon which are mounted a number of electronic components is provided with a connector strip for electrically coupling the components to respective components on a second circuit board located underneath. The strip comprises a body portion and pins projecting thereform. The pins have a stepwise configuration with a first end portion extending through apertures in the upper circuit board and connected to a second connector strip on the second circuit board, a second end portion extending through the body portion, and a middle portion which abuts the surface of the upper circuit board and by which the strip is connected to the upper circuit board by means of a solder joint. Components on the upper circuit board are electrically coupled by means of tracks which are connected to the components at one end by a solder joint and at the other end by a solder joint, via pins, to the second connector strip and tracks on the lower circuit board.
Abstract:
A system for supporting a plurality of terminals to be inserted into an electrical circuit board utilizes a body of molded, water soluble, polymeric material closely encasing portions only of the terminals.
Abstract:
Disclosed herein is a mechanical translator for use in replacing one semiconductor chip with another. A translator allows a first semiconductor chip to be replaced with second semiconductor chip. The translator includes a module having a first surface with a plurality of pins in a first pattern that is compatible with the contact pins of the first semiconductor chip and having a plurality of electrically conductive pads in a second pattern that is compatible with the contact pins of the second semiconductor. The module includes translating semiconductor logic for translating the electrical signals designed to be supplied to and received from the first second semiconductor chip to be compatible with the electronic signals supplied to and received from the second semiconductor chip. The electrical pads are appropriately connected to the translating logic. Also included is an adapter having pattern of pins and sockets compatible with the pattern of pins and sockets of the replacing semiconductor chip. The adapter is connectable in piggy back fashion with the module.
Abstract:
A printed circuit board for mounting and connecting a plurality of semiconductor devices is disclosed and includes a planar insulating substrate having multiple conductive layers disposed in overlying relationship within the planar substrate. A plurality of parallel rows of apertures for wire-wrap, quick-connect or stitch-wire contacts are provided for mounting integrated circuits. One side of the printed circuit board includes a plurality of power and ground connections disposed between each pair of parallel rows of apertures so that filter capacitors may be mounted under each integrated circuit, thereby conserving printed circuit board space. In a preferred mode of the present invention, alternate ones of the conductive layers are coupled to a source of electrical power while all remaining conductive layers are grounded. At least two adjacent conductive layers are then utilized to minimize parasitic capacitance by completely surrounding each aperture with a portion of conductive material.
Abstract:
A printed circuit for mounting and connecting a plurality of semiconductor devices is disclosed and includes a planar insulating substrate having multiple conductive layers disposed in overlying relationship within the planar substrate. A plurality of parallel rows of apertures for wire wrap, quick connect or stitch wire contacts are provided for mounting integrated circuit. One side of the printed circuit board includes a plurality of power and ground connections disposed between each pair of parallel rows of apertures so that filter capacitors may be mounted under each integrated circuit, thereby conserving printed circuit board space. In a preferred mode of the present invention, alternate ones of the conductive layers are coupled to a source of electrical power while all remaining conductive layers are gounded. At least two adjacent conductive layers are then utilized to minimize parasitic capacitance by completely surrounding each aperture with a portion of conductive material.
Abstract:
A circuit terminating clip for mechanically retaining and electrically connecting a planer substrate such as a thick/thin film circuit to a printed wiring card. The terminating clip is characterized by a terminating body having planer sidewalls defining a hollow interconnecting post receiving area therebetween. A substrate spring member extends from a bottom edge of a front wall of the terminating body arranged to accept the edge of the substrate, connecting the substrate to the terminating body. A terminating pad member extending from the top edge of the front wall of the terminating body is soldered to the substrate retaining the terminating body to the substrate. Post spring members extending inwardly into the post receiving area engage an interconnection post which extends from the printed wiring card thereby retaining the terminating body to the printed wiring card.
Abstract:
The integral interconnect socket and flexible board assembly accepts an electronic module having a plurality of leads arranged in a predetermined pattern. The assembly includes a flexible printed circuit (PC) board having a plurality of conductors and a first set of holes disposed to respectively intersect the conductors. A substantially rigid platform is mounted to the PC board and has a second set of holes. The first and second set of holes are in alignment and define common apertures arranged in the predetermined pattern to receive the leads of the modules. A layer of metal plating formed within the apertures makes electrical connections with the respective conductors. Jacks are mounted to each aperture for receiving the leads and making electrical connections between the leads and the conductors.
Abstract:
Interconnect sockets (10) are assembled with substrates, such as printed circuit cards (12), to connect the leads (17) of electrical components (18) to conductive pads (14) deposited on the substrate. Each socket has an end section (19)inserted into a mounting hole (11) in the substrate, for gripping portions of the walls of the hole to mount the socket to the board; a midsection (13) for contacting the conductive pad; and a lead-engaging section (16) for gripping the component lead and connecting it to the pad through the socket. Preferably, the socket is a tubular member of a conductively plated spring metal, with spring members (20, 22, 30) for resiliently engaging the walls of the hole, the contact pad, and the lead. The sockets are especially useful with thermosetting conductive-particle/resin conductors, such as silver-epoxy or -acrylic resin "thick-film " conductive inks.This divisional application relates particularly to methods of assembling such sockets with printed circuits having flowable, heat-curable conductive pads (14), wherein each socket is first fastened in the mounting hole so that a contact section (13) of the socket compresses the pad, after which the pad is heated to cure the conductive patterns and to bond the contact section of the socket to the pad.
Abstract:
A logic card for interconnection of integrated circuits comprises a laminate for supporting integrated circuit devices. The laminate includes a relatively highly conductive layer. A selected plurality of holes are formed through the laminate in selected patterns at each of a plurality of stations on the laminate. A conductor is disposed in each of the holes. The conductors comprise, in each pattern, first and second groups of conductors. The conductors in each first group have one end effectively exposed on one side of the laminate and the conductors in each second group in each pattern have their opposite ends effectively exposed on opposite sides of the laminate, thus adapting the conductors for connection thereto of either or both of a lead from an integrated circuit and a conductor wire. Coupling means are located internally of the laminate for coupling the conductive layer to the in-hole conductors of the first group in each pattern and defining between the conductive layer and each said conductor a transmission line termination device.
Abstract:
Circuit elements on circuit boards of a stacked assembly are electrically interconnected by interconnect devices located in a pseudo-random array on the boards. The interconnect devices include rigid, elongated members extending through the region separating adjacent circuit boards and assembled to receiver means, such as recesses, located in housings supported by an adjacent circuit board.