摘要:
An electrical connector can includes a connector housing that includes a housing body and further includes at least one fulcrum supported by the housing body. The electrical connector further includes at least one electrical contact supported by the connector housing, the at least one electrical contact configured to mate with a complementary electrical contact of a complementary electrical connector. The electrical connector further includes a latch assembly. The latch assembly can include an actuator and a latch. The actuator can have an actuator portion, an attachment portion, and at least one arm that extends between the actuator portion and the attachment portion. The latch can have a latch body that defines an attachment portion that is configured to be attached to the attachment portion of the actuator, such that movement of the actuator in a predetermined direction causes the pivot member to ride along the fulcrum, thereby pivoting the latch from a latched position to an unlatched position.
摘要:
The present invention provides an apparatus for reducing acoustic noise in a magnetic resonance imaging device including passive shielding located outside the actively shielded gradient winding elements in order to reduce the magnitude of fields that spread outside the gradient coil assembly in unwanted directions and interact with the magnet cryostat or other metallic magnet parts, inducing eddy currents that cause consequent acoustic noise. The passive shielding elements are conducting layers located on the outer radius of the cylindrical gradient coil assembly in a cylindrical magnet system, conducting layers located at the ends of the gradient coil assembly in a cylindrical magnet system, and conducting layers located inside the actively shielded gradient winding inner elements in a cylindrical magnet system. The passive shielding could also be located on separate structures that are vibrationally isolated from the magnet cryostat. The actively shielded gradient winding can also be extended to portions at the ends of the actively shielded gradient winding and further to portions inside the inner radius of the inner portion of the actively shielded gradient winding. The actively shielded gradient windings and passive shielding should be designed concurrently in order to substantially optimize the gradient linearity and reduce the eddy currents generated in metallic parts of the magnetic resonance imaging system.
摘要:
A high density, high speed, low profile, electrical connector (100) includes a housing (10) and conductive contacts (20) partially positioned in the housing. The housing has a base (11) defining therethrough a number of passageways (114). Each contact has a body portion (21) and a pair of cantilevered beams (22) extending from the body portion. A retaining tab (212) is stamped from the body portion and abuts against a projection (116) formed in the passageway for protect the housing from possible movement with respect to a board on which the connector is mounted. The connector also has a stabilizer (30) assembled to the housing.
摘要:
An electrical connector for connecting a sheet-like member includes a housing (1) defining an insertion slot (10); a plurality of terminals (2) arranged in the housing in parallel relationship with a predetermined pitch, each of the terminals having a contact beam (22) extending into the insertion slot and a pivot beam (21) extending substantially parallel to the contact beam; and an actuator (3) rotatably provided for establishing an electrical connection between the sheet-like member and the contact beams. The actuator provides cam portions (31) each interposed between every other the pivot beam. Each of the cam portions provides shaft portions (32) respectively adapted for pivotably engaging with the pivot beams disposed therebeside. The shaft portions extending towards each other respectively from two adjacent cam portions are spaced to define a gap (33) therebetween.
摘要:
A connector assembly (1) used to interconnect a primary circuit board (4) to an intermediate circuit board (5) includes a one-piece insulated housing (2) and an outer shell (3) partially enclosing outside of the housing (2). The housing (2) has a space (20) formed from a mounting side of the housing (2) to the primary circuit board (4) and a face (22) formed at another mounting side of the housing (2) to the intermediate circuit board (5). A plurality of conductors (25) is retained in the housing and extends from the space (20) to the face (22) and each conductor (25) has one tail portion (251) to be press-fit on the intermediate circuit board (5) and another tail portion to be engaged with a corresponding hole (41) on the primary circuit board (4). The one-piece housing and fewer interfaces are used, and the mounting method and mechanism of the conductors is simplified to reduce the cost of manufacturing.
摘要:
An electrical device (100) for interconnecting two parallel printed circuit boards at a large distance includes a plug connector (1), a receptacle connector (1′), and a mating extender (2) disposed between the plug connector and the receptacle connector. The mating extender includes a subassembly of wafer (21), a pair of identical caps (20) disposed on the top and bottom portions of the subassembly of wafer, and a pair of shroud-halves (22) sliding on the subassembly of the wafer. The subassembly of wafer is made up of a number of wafer modules (24) parallel with each other. Each wafer module has a wafer support (26) and a number of contacts (28) embedded in the wafer support.
摘要:
An electrical connector (100) adapted for mounting on a printed circuit board (300) includes an insulative housing (1) and a number of conductive contacts (2) attached to the housing. The conductive contacts include a number of signal contacts (20) and a number of ground contacts (22). Each ground contact includes a pair of solder tails (30). The solder tails include retention type tails (32) positioned in selected positions of the insulative housing and non-retention type tails (34). Each retention type tail includes a pair of lateral bulge (36) in back to back manner for interfering with corresponding through hole of the printed circuit board (300).
摘要:
An electrical connector (1) straddle-mounted on an edge (20) of a printed circuit board (2) includes an insulative housing (10) having an elongated groove (11) for mating. A plurality of receiving channels (13) each used to receive a support subassembly (3) is formed adjacently to and communicated with the mating groove (11). The support subassembly (3) includes a base (30) with signal contacts (5) and a ground member (4) attached thereon. Every contact (5) includes an engaging end (51) exposed to the mating groove (11) and a tail end (52) extending out of the receiving channel (13) in a suspended status. And the ground member (4) includes a plurality of contacting legs (42) extending from the ground member (4) and being arranged to stagger with the tail end (52) of every contact (5) along the lengthwise of the connector (1). Several holding elements (43) are formed in a hook shape on one edge side of the ground member (4) to hook and be partially inserted into the apertures (22) formed on the housing (10) to stop further insertion of the support subassembly (3), and the holding elements (43) of the neighboring ground member (4) are inserted in the same apertures (22) so that they can establish a common ground path to reduce their needed contacting legs (42) to the printed circuit board (2).
摘要:
A printed circuit board (1) for a straddle mount electrical connector (2) includes a first side surface (10) and a second side surface (12) opposite to the first side surface. Each of the side surfaces has a front and a rear rows of conductive pads (14), (16) and the conductive pads in the front row are staggered with respect to the conductive pads in the rear row. A number of solder pastes (11), (13) are applied through a solder stencil (18) to the conductive pads wherein each solder paste corresponding to the conductive pad in the front row is narrower and longer than the conductive pad. The straddle mount electrical connector has staggered signal and grounding contacts (221), (222) respectively secured to the front and the rear rows of conductive pads of the printed circuit board.
摘要:
A method of transmitting interleaved real-time and non-real-time data on a packet based network so as to provide voice Quality of Service comparable to the Time Division Multiplexing realm of traditional telephony. The method reduces packet jitter and delay by employing separate queues for the different types of data as well as through the use of jitter buffers. The interleaving method consists of a number of discrete concepts and mechanisms that when used together in the manner disclosed herein provides consistent high-quality transmission of real-time data over packet/frame/cell-based networks. The elements required for this method include time-slot co-ordination, a dynamic MTU algorithm, and a Multiple queue egress traffic management system.