摘要:
An integrated circuit package having metallized contact pads is provided with electrically conducting devices permanently attached to each contact pad. The devices are flexed when so attached, and are aligned and assembled onto corresponding pads of a second electrical component (e.g., a printed circuit board) to provide electrical connection between the integrated circuit package and the second electrical component.
摘要:
A PC (PCMCIA) card is constructed to include a jacket formed of a plastic bottom cover shell and a plastic top cover shell and defining a receiving chamber, the top cover shell and the bottom cover shell each having a plurality of locating grooves symmetrically disposed at two sides, and an interface adapter mounted inside the receiving chamber, the interface adapter including a circuit board and two connectors at two sides of the circuit board, the connectors each having a plurality of locating rods disposed at two sides and respectively engaged into the locating grooves of the jacket.
摘要:
In a folded armature assembly the vibratory end portion of the armature is prelocatable both translationally and rotationally relative to the facing pole surfaces of the permanent magnetic flux means before attachment of the supported portion of the armature to said means. The armature has wings extending laterally from the supported portion to form therewith a connecting bridge portion, and the wings are formed to provide pads extending normal to the bridge. A magnet strap with attached magnets fits slidably between the pads, with a clearance from the bridge of the armature, to permit said locations before the parts are permanently attached. After attachment and with the magnets magnetized, the armature may be adjusted substantially in translation to magnetic center between the pole faces by appropriate plastic deformation of the bridge. In a preferred embodiment, an improved structure is provided for viscoelastic damping of the undesirable second natural resonant mode of the folded armature.
摘要:
Since the radio wave absorbent of the present invention has the main component of a magnesium-zinc system ferrite material containing 45 to 50 mol % of iron oxide, 7 to 19.7 mol % of magnesium oxide, 24 to 28.5 mol % of zinc oxide, 4 to 16 mol % of copper oxide, and 0.1 to 6 mol % of manganese oxide, a matching thickness is less than 8 mm, and the total weight of the radio wave absorbent for use in the inner wall of a radio wave dark room or the outer wall of a building or the like is remarkably reduced as compared with the radio wave absorbent obtained by sintering the conventional magnesium-zinc system ferrite material. Moreover, since the radio wave absorbent can be obtained by sintering the material at a relatively low sintering temperature of about 950 to 1150° C., the manufacture cost can be reduced relative to the radio wave absorbent obtained by sintering the conventional nickel-zinc system ferrite material.
摘要:
An electrical connector (1) includes a housing (2) having at least a pair of engaging portions (203) and a number of passageways (22), a number of terminals (5), a shell (4), and a spacer (3). Each terminal has a mating portion (50) received in the passageway and a tail portion (51) extending downwardly beyond the housing. The spacer includes a pair of hooks (31) extending upwardly from opposite ends thereof and a number of positioning holes (303) for retaining the tail portions in position. Each hook has a first retention portion (32) and a second retention portion (33) positioned above the first retention portion. By means of gradual cooperation between engaging portions and the retention portions, the terminals are gradually oriented and guided by the holes of the spacer to be precisely inserted into a number of apertures defined in a printed circuit board without buckling.
摘要:
A high speed transmission electrical connector (1) comprises a dielectric body (10), a plurality of signal contact units (30) and grounding contacts (20) alternately retained in the dielectric body. Each signal contact unit has a differential pair of upper and lower contacts (32, 34) separated from each other for transmitting differential signals between an electrical component and a circuit board. Each upper or lower contact comprises a retaining body (322, 342), a resilient beam (324, 344) and a soldering portion (328, 348) extending from opposite ends of the retaining body, respectively. The retaining body of the lower contact defines a cutout (340) in an upper side (341) thereof adjacent to the upper contact. The cutout is like an inverted funnel in cross section for eliminating electrical skew between the upper and lower contacts and therefore maintaining system impedance.
摘要:
A simplified socket structure of miniature light bulb sets primarily comprises a shell element and a holding element that is provided with a pair of opposite resilient arms to secure a miniature light bulb in position. When the holding element along with a miniature light bulb seated therein is inserted into the shell element, the resilient arms are urged by the walls of the shell element to move toward each other to firmly grasp the light bulb. Thus the miniature light bulb socket according to the invention has the advantages of simplified structures and promoted gripping effect.
摘要:
A battery connector includes a number of connector blocks (1) each including an insulative housing (10) and a terminal (3) retained therein. The insulative housing has a mating face (11), opposite sidewalls (14) and a pair of slabs (16). Each sidewall and a corresponding slab define a passageway (17) therebetween. A pair of apertures (18) is defined through the sidewalls communicating with the passageways. The terminal includes a fixing portion (31) and a contact portion (30). The fixing portion includes a base section (32) and a pair of limbs (33) extending from the base section engaging with the passageways. Each limb forms a protrusion (331) thereon engaging with the aperture. The contact portion protrudes beyond the mating face to engage a terminal (50) of a rechargeable battery (5).
摘要:
A connector interface is provided with a body portion extending between two mating ends and is suitable for providing an interface between a cable and an electronic device. The connector includes a printed circuit board as its terminal and the circuit board extends through the body portion and has first and second mating edges that extend past the body portion of the housing at the mating ends. These mating edges permit the use of edge card technology to simplify the connector assembly and cost. One of the mating edges is enclosed by an extension portion of the connector housing such that the extension defines a receptacle that accommodates an opposing connector, such as a plug end of a cable assembly.
摘要:
The component (5) has a substrate (6), which comprises a number of contact bridges (7) corresponding to the number of contact elements (2) of the meter (1) which are to be electrically bonded, the contact bridges (7) having soldering tags (8, 9) bent at right angles to one another. The soldering tags (8) can be inserted through the printed-circuit board (3) and be soldered to the contact surfaces (4) of the latter. In this case, the substrate (6) is located on that side of the printed-circuit board (3) which is free of contact surfaces. The other soldering tags (9), which likewise project from the electrically insulating substrate (6) made of plastic, are provided with openings (11), through which the contact elements (2) pass when the meter (1) is being mounted on the printed-circuit board (3) and may be soldered mechanically in the same way as the soldering tags (8).