Abstract: The present invention allows easy inspection of the conditions of soldering of a plurality of first and second contacts in a card edge connector assembly in which daughter boards are stacked in a plurality of tiers. Each of the first contacts (12) has a main body (12a), bent contact parts (12c) which extend into the accommodating recesses (2 and 4) via contact part passage grooves (39 and 41), and a tine (12d) on the lower end of the main body (12a). The plurality of second contacts (13) are constructed from contact members (14 and 15), and a conductive member (17) which electrically connect the contact members (14 and 15) on the rear part of the housing (6). Tines (15g) are formed on the lower ends of the contact members (15). The first contacts (12) are attached from the rear part of the housing (6), and the contact members (14 and 15) of the second contacts (13) are attached from the front part of the housing (6).

Abstract: The present invention relates to an electrical connecting device, which enables to connect electrically an integrated circuit substrate to a printed circuit board in direct or to test an integrated circuit device in use of a printed circuit board.

Abstract: A socket connector and a card-edge is provided for electrical busses. In one embodiment, a socket is provided for electrical busses that require each end of the bus to be terminated that does not require a termination card. In another embodiment, a socket connector is provided for electrical busses that flow through several aligned socket connectors. The design of the socket connector connects a bus to termination resistors located on a circuit board of the socket connector by cross-connecting the signal through the signal pins inside the socket connector.

Abstract: A receptacle for an electrical connector which comprises an elongated insulative housing having parallel lateral walls, parallel end walls and base wall. An interior cavity is formed by those walls, and a longitudinal groove extends between the longitudinal walls from adjacent one of said end walls to the other end wall. At least one conductive contact having a base end and a distal end extends upwardly in the interior cavity. It is fixed to the housing adjacent the base end and is movably attached at a medial guide and then extends upwardly such that the distal end of the contact is adjacent the longitudinal groove. Critical dimensional tolerances relative to the terminal contacts can be achieved with this receptacle.

Abstract: An electrical card edge connector comprising: (a) a housing defining a slot for receiving an edge of a circuit board and a plurality of cavities along the slot for receiving contacts; (b) a plurality of contacts in the cavities. The plurality of contacts has at least a first contact, a second contact, and a third contact, each of which comprises a body and at least one cantilevered arm extending from the body. At least one cantilevered arm of each contact extends into the slot so that when a circuit board is inserted in the slot, a portion of the cantilevered arm of each contact contacts the circuit board. From a viewpoint parallel to the slot, the profile of the body of the first contact overlaps substantially all of the profile of each body of the second and third contacts. Additionally, from this viewpoint, the profile of one or more cantilever arms of the first contact overlaps a substantial portion of the profile of each cantilever arm of the second and third contacts.

Abstract: An electrical card edge connector (1) includes an elongated insulative housing (10), a number of juxtaposed electrical engaging terminals (11) mounted in the housing and a pair of electrical hot plug switching modules (2) assembled in the insulative housing. The insulative housing comprises a card receiving slot (16) for receiving an electronic card. The card receiving slot defines a slot bottom face (160). The switching modules each includes a printed circuit board portion (22) and a number of switching terminals (13, 15) retained in the printed circuit board portion. A first distance H1 is defined between contact portions (116) of the engaging terminals 11 and the slot bottom face (160) and a second distance H2 is defined between contact portions (136, 156) of the switching terminals (13, 15) and the slot bottom face (160). The first distance H1 is relatively smaller than the second distance H2.

Abstract: An electrical connector for electrically connecting a card to a printed circuit board comprises an insulative housing, a number of contacts and a pair of board locks received in the housing, and a pair of card ejector mechanisms pivotally mounted in opposite ends of the housing. The housing defines a slot which separates a middle section thereof into a first part and a second part. The first and second parts each define a number of cavities in which the contacts are received. The first and second parts each provides a number of projections extending beyond an inner wall thereof. The projections on the first part are spaced a distance equal to a thickness of a daughter card inserted in the slot from the projections on the second part. The projections on the first and second parts abut against opposite surfaces of the daughter card thereby securing the daughter card in the housing.

Abstract: An electronic device containing an electronic element such as a thermistor element is produced first by providing the element with electrodes formed on its two main surfaces facing outward away from each other, at least two terminals and a casing. Each terminal has a contact part for contacting one of the electrodes and an extended part extending from the contact part. The contact part of at least one of the terminals is elastic and bendable. The terminals and the electronic element are inserted into the casing either sequentially or simultaneously as an assembly in any of the ways such that the electrodes on the electronic element are not rubbed directly against the contact parts of the terminals. This may be done by disposing flexible guide plates over the contact parts such that the electrodes will glide over these guide plates as the electronic element is inserted after the terminals are installed inside the casing.

Abstract: An edge card electrical connector is adapted for receiving an edge of a printed circuit board having contact pads on at least one side of the board adjacent the edge. The connector includes an elongated dielectric housing having a board-receiving face with an elongated slot for receiving the edge of the printed circuit board. A plurality of terminal-receiving cavities are spaced longitudinally of the slot along at least one side thereof and separated by transverse walls. A plurality of first and second terminals are received in the cavities. The shapes of the terminals are such as to provide excellent capacitive coupling between the first and second terminals to improve electrical performance and reduce crosstalk of the connector.

Abstract: An input/output connector adapted for a mobile electric device. The input/output connector includes a connector body and at least one pair of terminals. The connector body is exposed to the outside and having at least one pair of terminal holes. Each terminal hole is provided with an engaging block at a position adjacent to the outside respectively. A contact portion is formed at one end of the terminal, and an engaging portion is formed at the other end. Each engaging portion engages with the engaging block, and the opposing contact portions hold a printed circuit board of the mobile electric device. Therefore, the printed circuit board is capable of electrically communicating with the external electric device.

Abstract: A smart card connector, in particular a SIM-card connector has a top portion supporting contact elements (30) and a bottom portion supporting contact elements (31) disposed in a spaced relationship to the top portion, said top portion (12) and said bottom portion (13) form a card slot (14) in which two smart cards, in particular SIM-cards can be inserted in such a manner that one card (27) faces with its card contacts (29) towards the contact portions of the contact elements (30) of the top portion whereas the other SIM-card (28) faces with its card contacts (290) towards the contact portions of the contact elements (31) of the bottom portion.

Abstract: A card edge connector is provided. This card edge connector comprises: a first connector housing and a second connector housing to be inserted into a connector receiving chamber provided with a wiring substrate having terminal connecting portions; a plurality of terminals each having an elastic contact segment provided with a contact portion; assisting members (spring members) for helping the elastic contact segments to resist separation of the first connector housing and the second connector housing in the connector receiving chamber; and a holding mechanism provided to the first connector housing and the second connector housing for holding the assisting members by engaging them with the rotary support axes and the bearings.

Abstract: A card edge connector comprises an insulative housing having a mating face and a mounting face and a plurality of different kinds of conductive contacts. The housing defines an elongate slot in the mating face for receiving a mating edge of a circuit board having an unequal number of conductive pads on opposite faces of the mating edge. The housing also defines a plurality of aligned, transverse cavities on each side thereof for receiving the different kinds of conductive contacts therein. At least two kinds of different contacts are received in the transverse cavities of one side of the housing and a smaller number of contacts are received in the cavities of the opposite side of the housing.

Abstract: A socket for receiving a semiconductor component (10) having an electric terminal (12) comprises a contact (31), to which the electric terminal is connected, and a driving mechanism for moving the contact (31) toward the electric terminal (12) when the semiconductor component is inserted into an insertion position in the socket. The driving mechanism has a movable separation member (40) for keeping the contact (31) away from the insertion position of the semiconductor component (10) when the semiconductor component is not inserted in the socket. The socket also has a spring (50) which is compressed as the semiconductor component (10) is inserted, and pushes back the movable separation member (40) toward the semiconductor component.

Abstract: An electrical connector comprises an insulative housing and a plurality of terminals. The insulative housing includes a central portion, a pair of side walls and a pair of lateral walls. The central portion defines a plurality of passageways therethrough for receiving corresponding terminals therein. Each terminal comprises a fixing portion, a contacting portion, a slanting portion and a tail portion. The contacting portion is formed at the top end for electrically contacting with a mating connector. The slanting portion slantways extends from the fixing portion with an obtuse angle. A tail portion is formed at the end of the slanting portion. A soldering portion of each terminal is folded at a same plane before soldering on a circuit board. Therefore, after the terminals are assembled to the insulative housing, the soldering portions of corresponding terminals can be arranged with a proper planarity and the quality of solder process is also improved.

Abstract: An electrical connector includes an elongate insulative housing and a plurality of terminals. The housing forms an engaging slot and a plurality pairs of passageways exposed to the engaging slot for receiving corresponding terminals therein. Each terminal forms a plurality of fixing sections on a middle section thereof. The fixing sections are spaced from each other a distance whereby a possible buckling of the terminal when inserting it into the housing is prevented. An obstruction portion comprising a folded portion and a pair of projections is formed on the terminal proximate a circuit board for inhibiting wicking of flux. A spacing recess is formed in the housing opposite the engaging slot and proximate a circuit board. A pair of positioning posts is formed on a bottom surface of the housing proximate the spacing recess for engaging with corresponding holes formed in the circuit board.

Abstract: An apparatus and method for routing all external connection points of a double-sided edge connector of a circuit card to one side of a test tray suitable for testing with a bed of nails, “pogo pin” or similar type of load board for functional testing of said circuit card. A first embodiment of the apparatus includes a pivotally mounted or snap-in removable electrical and mechanical receptacle with a slot or socket suitable for holding a double-sided edge connector of a circuit card in a test tray. The receptacle pivots or is otherwise mounted in the test tray to allow the circuit card to lie co-planar with the test tray, thus providing perpendicular contact to the pins of a bed of nails load board. Another embodiment provides a fixed receptacle mounted vertically that routes all edge connector traces to the bottom surface of the test tray, again, suitable for engaging with a bed of nails-type test board.

Abstract: A high speed connector (10) includes an insulative housing (12) defining a central slot (14) with two rows of passageways (16) by two sides thereof wherein each passageway (16) receives a contact (18) therein. Each contact (18) includes a base (20) with retention means (24) for interferentially engaging the contact (18) within the corresponding passageway (16). From the base (20), a main arm (26) extends upwardly toward and into the central slot (14), and an auxiliary arm (28) extends upward spaced from the main arm (26) and also spaced from the outer wall (30 in the passageway (16). When the module (100) is inserted into the central slot (14), the module (100) first engages the main arm (26) and pushes the main arm (26) outwardly. The main arm (26) successively engages the corresponding auxiliary arm (28) aside and pushes the auxiliary arm (28) outwardly.

Abstract: A card edge connector comprises an insulative housing, a number of first contacts and a corresponding number of second contacts. The housing defines a card receiving slot and a number of contact receiving cavities. The first and second contacts have spring portions including individual contacting portions that are located at different levels from a top face of the housing and are spaced a height which is greater than a vertical length of a tapered front edge of a daughter card mated with the connector. The spring portion of the second contact forms an S-shaped portion having a lower turning point spaced from a retention portion of the second contact a distance less than the vertical length of a free end of the second contact above a bottom face of the prestress portion that the free end of the second contact bears against.

Abstract: An electrical connector comprises an insulative housing defining a number of passageways as well as a mating face, and a number of conductive terminals received in the corresponding passageways. Each terminal includes a contact section, a securing section and a joint section. The contact sections of the terminals each have a first crook connected to a second or contact crook by a connecting section. The terminals comprise both long terminals and short terminals arranged in the housing in two rows. The long terminals are alternately arranged with the short terminals whereby the electrical connector can clippingly engage with a PCB while exhibiting the advantages of quick assembly at low cost.

Abstract: A card edge connector which has a pivoting latching mechanism that has a pair of parallel fingers that direct inward transverse forces on the opposed sides of the printed wiring board to secure it in the connector. The connector also includes a plate on each of the contact elements which prevents overstressing of the arcuate element of the contact. The plate also includes a longitudinal projection and an opposed longitudinal recess so that the adjacent contact elements may be connected to resist axial forces.

Abstract: An electrical connector 12 is provided for receiving a card edge into a card-receiving slot 13. A series of contacts 20 are disposed inside contact-receiving cavities 14 which are provided along the card-receiving slot 13. The contacts 20 have a cantilever arm 42, a tail section 40 and a contact section 48 which is lanced from the cantilever arm 42. The contact section 48 is profiled to have a contact point 50 located at a distance from the cantilever arm 42 near a free end 44.

Abstract: An electrical edge connector and a terminal therefore for connecting a first electrical circuit board to a second electrical circuit board, the first electrical circuit board having an insertion edge and two sides, the connector comprising an elongated dielectric housing having therein a longitudinal slot for receiving the insertion edge of the first electrical circuit board and a plurality of transverse terminal receiving cavities adjoining the slot on each side of the slot, and a plurality of signal terminals disposed within some of the terminal retention cavities on each side of the slot and a plurality of ground terminals disposed within others of the terminal retention cavities on each side of the slot, the signal and ground terminals each having a base portion, a retention portion extending from the base portion and retaining the terminal in one of the retention cavities, a tail portion extending from the base portion for electrically connecting the terminal to the second electrical circuit, and a sprin

Abstract: A printed circuit card having first and second circuit units mounted thereon in connection to terminal pads adjacent two card edges, with the first and second circuit units being in connection to each other and to select pads of a first edge such that upon insertion of that edge into a given card socket, both circuit units are enabled, and the circuit units also being in connection to the pads of a second edge such that upon insertion of that edge into a second card socket, only the second circuit unit is enabled. In the preferred embodiment, the card is a memory module card having buffer and memory circuit units designed to cooperate with each other and with either of standard, buffered or unbuffered memory card sockets in a system board in accordance with insertion of a first or second pad edge in one of the card sockets to automatically provide, either combined circuit unit operation, or single circuit operation. The invention is also applicable to clocked register circuits and series pass devices.

Abstract: A card edge connector for mounting on a circuit board and removeably receiving a circuit card includes an elongated housing defining a card receiving slot. Numerous terminal receiving cavities intersect and extend to both sides of the slot. Alternate cavities include stamped reference (ground or power) terminals and signal terminals, all having downwardly extending board contacts and upwardly extending spring arms. There are numerous similar sets of face to face contacts, each including a reference contact parallel to and substantially overlying an opposed pair of signal contacts. The upwardly extending reference terminal spring arms include oversize pad portions for reducing crosstalk by increasing coupling between the reference and signal terminals. The circuit paths to the circuit board are in an array symmetrical about the centerline of the circuit card, with parallel inner lines of circuits containing only reference contacts and outer lines of circuits containing only signal contacts.

Abstract: An electrical connector assembly (40) in which the elements (42, 44) providing electrical contact are separate from the element insuring sufficient normal contact force. The assembly is capable of operating at elevated temperatures by utilizing a stainless steel spring member (46) to provide the contact force, since stainless steel maintains its resiliency at high temperatures. The conducting elements (42, 44) are formed of a conductive material which maintains its conductivity over a wide range of temperatures. The assembly holds the conducting elements in a stack so that only a single spring member is required.

Abstract: An electrical connector for connecting a memory module to a circuit board comprises an elongate housing, a number of contacts and an ejector. The housing includes an elongate body and a pair of arms extending from opposite ends of the body. The body includes a plurality of cavities formed in opposite side walls thereof and an elongate slot defined between the side walls in communication with the cavities for insertion of the memory module. The slot is slightly wider than the memory module. Each arm defines a channel in an inner surface thereof in communication with the slot of the body for guiding the memory module into the slot. A pair of elongate ribs project from inner surfaces of opposite side walls of each arm for abutting against the memory module thereby restricting movement of the memory module along a lateral direction. The contacts are received in the cavities of the housing and exposed to the slot of the housing for mating with the memory module.

Abstract: A connector (2) has a first card receiving slot (16) and a second card receiving slot (32). The first card receiving slot is for connection to a circuit board with the ISA standard, and the second slot is for connection to a circuit board with the PCI standard. The terminals (24, 38) and terminal receiving cavities (28, 36) of the first and second slots are offset (P3) with respect to each other such that the cavities interleave in a central portion (60) of the housing between the slots. The latter enables provision of a small spacing D between the slots (16, 32).

Abstract: An electrical connector 10 is provided for completing a right angle electrical interface between a pair of circuit boards. The connector 10 features an insulative housing 20 having an upright section 30 and a board receiving section 28. The board receiving section has open top and bottom outer surfaces 29, 27 for allowing insertion of contacts 50, 52 into contact receiving passages 34, 32. A ground plane 60 is disposed over the top set of contacts 50 and is profiled to engage selected ones of the contacts 50 in the upright section of the passage 34.

Abstract: A method and structure of an electrical connector is provided for tuning the impedance of the connector according to a given impedance of an electrical circuit in which the connector is interconnected. The connector includes a dielectric housing having a receptacle for receiving a complementary electrical component. A plurality of terminals are mounted on the housing. The terminals include body portions located in the housing and contact portions for engaging respective contacts on the electrical component. The body portions include mechanically non-functional sections of a given area which effect a given capacitance. The mechanically non-functional sections are selectively trimmable to selectively vary the area thereof and thereby vary the capacitance of the terminals and, therefore, the impedance of the connector to match the given impedance of the electrical circuit. The connector includes a plurality of signal terminals and a plurality of ground terminals.

Abstract: A printed wiring board comprises a main board and a pair of rows of connection terminals for holding a card board in a vertical position. Each connection terminal is inserted into the main board at a predetermined interval, and electrically connected with a circuit pattern of the main board. The printed wiring board allows the card board to be positioned vertically on the main board, and is adaptable to change the number of patterned external connection terminals of the card board. A guide means with resilient tongues may be provided at the respective ends of the rows to additionally secure the card board in place.

Abstract: A slanted card edge connector (10) includes an insulative housing (12) defining a central slot (14) for receiving a card therein wherein two rows of passageways (30, 32) are disposed by two sides of the central slot (14) for respectively receiving the corresponding contacts (34, 36) therein. The lower row contacts (36) are installed within the corresponding passageways (32) from the front side of the housing (12), and the upper row contacts (34) are installed within the corresponding passageways (30) from the rear side, respectively. Three wedge like supports (20) are provided under two opposite ends and the middle portion (22) of the housing (12) so as to result in the central slot (14) extending upward and forward along a predetermined upward angle, thus resulting in a significant distance between the surface of the PC board (100), on which the connector (10) is seated, and the corresponding lower row passageway (32).

Abstract: A card edge connector includes an insulative body defining two receiving slots therein for selectively receiving two daughter boards. The receiving slots are spaced from each other by an internal wall of the insulative body. Each receiving slot has a number of contact elements received and retained therein for electrically engaging with the corresponding daughter board. The daughter boards received in the receiving slots are disposed in opposite directions thereby eliminating the possibility of interference between electronic components mounted on the daughter boards.

Abstract: A female connector to be coupled with a male connector of an electric device and an external circuit board. The female connector is composed of a case member to be inserted into a coupling hole of the circuit board, a pedestal portion extending outward from the case member in a direction perpendicular thereto, a plurality of terminal members disposed in the case member, and at least a pair of projection members extending from opposite sides of the pedestal portion toward the coupling hole of the circuit board. The case members have a plurality of parallel slits, and the pedestal member has a plurality of parallel grooves connected to the slits. The terminal member has a base portion inserted in one of the grooves, a first terminal portion inserted to one of the slits and a second terminal portion extending from the base portion toward the external circuit board.

Abstract: An apparatus and method for routing all external connection points of a double-sided edge connector of a circuit card to one side of a test tray suitable for testing with a bed of nails, "pogo pin" or similar type of load board for functional testing of said circuit card. A first embodiment of the apparatus includes a pivotally mounted or snap-in removable electrical and mechanical receptacle with a slot or socket suitable for holding a double-sided edge connector of a circuit card in a test tray. The receptacle pivots or is otherwise mounted in the test tray to allow the circuit card to lie co-planar with the test tray, thus providing perpendicular contact to the pins of a bed of nails load board. Another embodiment provides a fixed receptacle mounted vertically that routes all edge connector traces to the bottom surface of the test tray, again, suitable for engaging with a bed of nails-type test board.

Abstract: A grounding contact (1) for inducing noise on a pair of contacts (215) in a high speed, high density electrical connector (2) to ground includes a first section (10) and a second section (11) separated from each other. The first section (10) includes a contact portion (102) for engaging with a daughter board (40) inserted into the connector (2), a fitting portion (104) interferentially engaging with a housing (201) of the connector (2), and a terminal portion (12) to be fitted into a hole of a printed circuit board. The second section (11) includes a contact portion (112) for engaging with the daughter board (40), a fitting portion (114) interferentially engaging with the housing (201) of the connector (2), and a terminal portion (13) for engaging the terminal portion (12) and joining the two sections (10, 11) of the grounding contact (1) together.

Abstract: A slanted DIMM connector (10) includes an insulative housing (12) defining a central slot (13) for receiving a module therein and a pair of ejectors (16) rotatably positioned within a pair of corresponding towers (14) adjacent two opposite ends of the housing (12). Three support blocks (18) extend forward from a center portion and two opposite end portions wherein each of the support blocks (18) about the end portion has a cut-off (36) in alignment with the tower (14). When the two slanted DIMM connectors (10) are closely side by side arranged on the PC board (100) in a front-to-end direction, the outermost upper edge (40) of the tower (14) of the front connector (10) is substantially aligned with a vertical plate (38) of the cut-off (36) of the adjacent rear slanted DIMM connector (10), so that the rear connector (10) can be directly upward moved from the PC board (100) without interference with the raised tower (14) or any portion of the front connector (10).

Abstract: Personal computer motherboards commonly have connectors located on them for the insertion of plug-in adapter cards. Disclosed is a connector having a first opening in which a PCI adapter card may be inserted and a second opening in which an adapter card of a second type, such as an ISA or EISA card may be inserted. The connector has an insulating moulding common to the first and second openings. By using such a connector, the spacing between slots may be reduced from that required when separate PCI and ISA or EISA connectors are used. This allows either a lower profile for a personal computer or for more connection slots to be incorporated.

Abstract: An electric connector for receiving an interface card (4), the connector including two rows of terminals (2 and 3), each terminal (2, 3) having a contact portion (22, 32) supported between a supporting portion (26, 36) and a retaining portion (23, 33) for positive contact with the inserted interface card (4), and an endpiece (27, 37) stopped against an inside wall of the casing of the electric connector to support the retaining portion (23, 33) against a stop edge (15, 16) inside the casing, the contact portions of the two rows of terminals (2 and 3) being disposed at different elevations so that less frictional resistance is produced when an interface card (4) is inserted into the electric connector.

Abstract: An electrical connector assembly for electrically connecting different type daughter board to a mother board, comprises a first connector housing, a second connector housing, a plurality of first contacts and a plurality of second contacts. The first connector housing includes a first slot for receiving one daughter board therein and a plurality of first passageways each receiving one first contact. The second connector housing integrally connected with said the first connector housing, includes a second slot for receiving another daughter board therein and a plurality of second passageways each receiving one second contact. A plurality of third passageways are defined between the slots wherein each third passageway consists of at least a first passageways and a second passageways in the structure thereof for receiving a first contact and a second contact which are alternately arranged.

Abstract: A card edge connector having a housing, first contacts, and second contacts. The first and second contacts each have mounting sections and cantilevered flexible sections. The mounting sections of the first and second contacts have different lengths. The cantilevered flexible sections of the first and second contacts have the same length and shape. The first and second contacts are inserted into the housing at the same time on a single carry strip to form multi-level contact areas.

Abstract: An electrical connector for interconnecting a circuit card to a substrate includes a dielectric housing having an elongated slot which is open for receiving an edge portion of the circuit card, and a plurality of contacts which are spaced-apart along a length of the slot. Each of the contacts has a base portion, a lead extending from the housing for connection with a circuit path on the substrate, and a contact arm having a contact surface which extends into the slot for engaging a respective contact pad on the circuit card. An electrical path through each contact is defined from the contact surface to the lead, the electrical path being relatively long when the contact is undeflected. The contact arm has a free end which engages the base portion of the contact during insertion of the circuit card into the slot, wherein a relatively shorter electrical path through the contact is defined from the contact surface to the lead.

Abstract: A card edge slot connector includes an insulative housing defining a central slot for receiving a card therein with a plurality of passageways disposed therein by two sides of the central slot. A corresponding number of signal contacts are received within the passageways, respectively. At least an elongated grounding member is disposed in the inner portion of the housing with a series of grounding straps extending from the grounding member into the corresponding passageways, respectively, wherein each grounding strap shares the same passageway with the corresponding signal contact.

Abstract: Disclosed is a card edge connector which has a pivoting latching mechanism that has a pair of parallel fingers that direct inward transverse forces on the opposed sides of the printed wiring board to secure it in the connector. The connector also includes a plate on each of the contact elements which prevents overstressing of the arcuate element of the contact. The plate also includes a longitudinal projection and an opposed longitudinal recess so that the adjacent contact elements may be connected to resist axial forces.

Abstract: A thin and small computer system that can be used generally for control of equipment or the like, includes a CPU chip, peripheral control chips, and other components mounted in the form of a bare chip, whereby a computer system having a so-called hierarchy architecture can be incorporated in an IC card-like casing. Computer system components are affixedly attached to a double-sided printed wiring board. Electronic components may be attached to the printed wiring board in a bare form and then at least partially sealed with a resin. A system may further include a second printed board which is independent from the first printed board and adhesively attached to a inner surface of the casing and connected to the first printed board by a flexible member. In addition the second circuit board may include structure which enables it to connect to an apparatus for programming an electronic component attached thereto.

Abstract: A method and structure of an electrical connector is provided for tuning the impedance of the connector according to a given impedance of an electrical circuit in which the connector is interconnected. The connector includes a dielectric housing having a receptacle for receiving a complementary electrical component. A plurality of terminals are mounted on the housing. The terminals include body portions located in the housing and contact portions for engaging respective contacts on the electrical component. The body portions include mechanically non-functional sections of a given area which effect a given capacitance. The mechanically non-functional sections are selectively trimmable to selectively vary the area thereof and thereby vary the capacitance of the terminals and, therefore, the impedance of the connector to match the given impedance of the electrical circuit. The connector includes a plurality of signal terminals and a plurality of ground terminals.

Abstract: A connector for an edge card includes an elongated insulative housing with a central edge card-receiving slot formed in its top surfaces between two opposing sidewalls of the housing. The housing incudes two sets of terminal-receiving cavities disposed between the two side walls. The cavities are spaced apart from each other and separated by intervening cavity walls and the cavities are open to the exterior of the connector housing at the top and bottom of the housing. Conductive terminals are inserted into the cavities, preferably from the bottom and the terminals contain contact portions that are adapted to engage confronting contact pads on the edge card. The contact portions extend through additional openings of the cavities so that part of the contact portions extend into the card-receiving slot. The housing includes two preload walls that extend the length of the housing and separate the top openings from the slot openings of the cavities.

Abstract: A card edge connector (10) includes an insulative housing (12) defining a card receiving central slot (14) for receiving a card (200) therein. Two rows of passageways (16) are respectively positioned by two sides of the central slot (14) for receiving a plurality of signal contacts (18) therein, respectively. A corresponding number of grounding contacts (20) are positioned in the same passageways (16) with the signal contacts (18), respectively, in a one-by-one relationship with the signal contact (18) wherein each grounding contact (20) is disposed in a lower and inner position in the corresponding passageway (16) in comparison with the signal contact (18) which shares the same passageway (16).

Abstract: An apparatus and method for rigidly stabilizing or restraining circuit boards is provided. The apparatus has a rigid cross member (20) and a circuit board clamp (10). These provides stabilization of commercial off the shelf (COTS) circuit boards for use in harsh environments. A one piece clamp has hooks with notched ends that attach to opposite sides of each circuit board. The clamp has a surface parallel to the hook. The parallel surface has threaded holes. Threaded shafts are used with the threaded holes to contact the clamp hook and provide pressure on the printed circuit board. A threaded hole is used with a threaded shaft to engage a rigid cross member. The cross member has unthreaded holes to allow for attaching to the clamps with threaded fasteners. The rigid cross member is then attached to the chassis with a fastener. This eliminates flexing of the circuit board under vibration.

Abstract: An IDC type terminator (10) includes a housing (12) having a plurality of passageways (18) extending therethrough in the vertical direction. A plurality of contacts (20) are respectively received within the corresponding passageways (18). The upper and lower portions of the contacts (20) respectively and oppositely extending out of the housing (12) wherein the upper portions engage the PC board (15) which vertically stands on the housing (12), and the lower portions engage the corresponding flat cable (34) which is sandwiched between a bottom cover (16) and the housing (12). Opposite to the bottom cover (16), a top cover (14) is attached to the housing (12) for shielding the PC board (15) therein. A pair of cavities (22) are positioned on two opposite ends of the housing (12) so that the latches (58, 64) of the top cover (12) and of the bottom cover (14) may commonly but oppositely side by side occupy the corresponding cavity (22).