摘要:
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.
摘要:
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 references (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.
摘要:
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.
摘要:
Provided is an electrical connector for connecting a first electrical component to a circuit member having generally oppositely facing mating and remote surfaces and conductive regions on at least one of the mating and remote surfaces, at least one of the conductive regions being a through hole. The connector includes a dielectric housing having a receiving area for receiving the first electrical component therein and a plurality of terminal receiving cavities extending generally perpendicularly to at least one of the surfaces. The connector further includes a terminal in one of the terminal receiving cavities. The terminal has a body portion, a contact arm extending from the body portion for electrically contacting the first electrical component, a retention portion for retaining the terminal in the cavity, and a board contact extending from the body portion to the through hole. The board contact is a through hole-type tail for extending through the through hole. The tail includes a full segment and an abutting narrowed segment, each segment having edges and a centerline generally perpendicular to the mating surface, the centerline of the narrowed segment being offset from the centerline of the full segment. A transition between the abutting segments is positioned between the mating and remote surfaces of the circuit member when the connector is mounted to the circuit member.
摘要:
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.
摘要:
A termination unit (144) for use with a system that permits the monitoring of a computer network to perform network inventories. The termination unit takes the form of a cap that engages the termination face of a network jack and has a sensing circuit (246) integrated therewith so that, once engaged with the jack, the sensing circuit is connected to two terminals of the jack. The sensing circuit may include a resistor, capacitor or inductor, any of which provide a known sensing value that is different than a sensed value of an end-user device used on the network, but less than infinity so that the system senses when an end-user device is connected to or disconnected from the network.
摘要:
A processor mounted to a circuit board is provided with regulated voltage through lower-inductance circuit board traces by mounting a voltage regulator module for the processor, on the side of the circuit opposite to the processor. Current from the voltage regulator is provided to the processor by way of one or more conductors between the regulator and processor that extend through the circuit board from one side to the other. Inductance attributable to lead length is reduced by locating the voltage regulator close to its load. Circuit board space on the processor side of the circuit board is increased by moving the voltage regulator to the opposite side.
摘要:
A contactless interconnecting system is provided between a computer chip package and a circuit board. The chip package has a substantially planar lower surface with a pattern of discrete terminal lands. The circuit board has a substantially planar upper surface spaced from and generally parallel to the lower surface of the chip package. A pattern of discrete circuit pads on the upper surface are aligned with the terminal lands. A plurality of discrete interposer members are disposed between the terminal lands and the circuit pads and are in a pattern corresponding to and aligned with the aligned patterns of the terminal lands and circuit pads. The interposer members are preferably of a material having a higher dielectric constant that of the material filling the gaps between interposer members.
摘要:
The present disclosure is directed to connectors and methods for passing signals through capacitive coupling and electron tunneling. The connectors according to the present disclosure can include contacts that have a dielectric film or coating applied at least at a contact interface area where the contacts engage with the contacts of a complementary mating connector. The contacts of the either or both of the connector and complementary connector can be coated with a dielectric film. The dielectric film can be selected from metal oxides and can be applied using known methods such as vapor deposition methods, oxidative methods, plating methods and adhesive coating methods. Performance parameters such as capacitance and resistance can be selected by selecting the material for the film and the thickness of the dielectric film and provides a contrast between the requirements for high frequency signal transfer using capacitive coupling and electron tunneling versus traditional metallic contact.
摘要:
A system for delivering power to an integrated circuit includes a decoupling capacitance located in a connector that is formed as a socket, or frame for the IC. The power delivery system takes the form of a power reservoir that is integrated into a connector, thereby eliminating the need for complex and expensive power traces to be formed in or discrete capacitors mounted on a circuit board to which the IC is connected. The system includes a connector that takes the form of a cover member that fits over the IC and which contains a recess that accommodates a portion of the IC therein. The cover member includes at least a pair of spaced-apart capacitor plates that are disposed therewithin. Electricity is supplied to the plates so that they will become charged as a capacitor and the plates are formed with a plurality of terminals that extend into contact with the IC so that the plates may selectively discharge to the IC and thereby provide it with operating and surge currents.