Abstract: An electronic printed circuit board has a memory module and a contact strip for insertion into another electronic unit. The memory module has at least nine identically designed housing-encapsulated integrated semiconductor memories configured on the printed circuit board. The longer dimension of the housing of one of the semiconductor memories, which is connected as an error correction chip, is oriented perpendicular to the contact strip. The longer dimension of the housings of the other semiconductor memories are oriented parallel to the contact strip. The different orientation of the semiconductor memories makes it possible to reduce the height of the printed circuit board while enabling the rectangular housings to keep the same physical form.

Abstract: An electronic device includes a housing that is formed with two fixed positioning members, and a back-supporting plate that is movable forcibly on an upright housing portion of the housing to move two tongues of two movable members along two annular guide slots in the positioning members. Each of the annular guide slots has a plurality of positioning slot portions. Each of the tongues of the movable members is limited to move within a corresponding one of the annular guide slots along a single direction, and is biased into a selected one of the positioning slot portions of the corresponding one of the annular guide slots. As such, the inclination angle of an upright housing portion of the housing relative to a horizontal support surface can be adjusted.

Abstract: A system is configured for installing a replaceable component at a replaceable component locus in an equipment cabinet having a front and back plane and a plurality of sides. A fixed component occupies a first volume that establishes a replaceable component volume between the first volume and the back plane. The system includes: (a) a substrate supporting the replaceable component that presents substantially parallel first and second edges in a substrate plane; and (b) a guide structure fixed with the cabinet that cooperates with the substrate to slidingly move the substrate along a replacement route between the front plane and a replacement locus in the replaceable component volume in alternate first and second installation movements. The first installation movement is responsive to a first installation force applied to the substrate in the substrate plane. The second installation movement is responsive to a second installation force applied generally perpendicular with the substrate plane.

Abstract: An RF management system especially suitable for use in CATV head end environments is disclosed. The system is characterized by a basic rack-mountable chassis component that can be configured for both front and rear mount applications, for different cable management solutions and for accepting eighteen passive RF modules or nine active RF modules or a combination of passive and active RF circuit modules. The active configuration of the chassis has an integrated power bus with at least nine connectors for receiving up to nine active RF circuit modules. The active RF circuit modules, such as power supplies and amplifiers are each provided with a “floating” connector for ease in connecting the power supply module or amplifier module to the power bus. The RF power supply module is capable of supplying power to all the active RF modules in the chassis as well as to active RF modules mounted in one or more other chassis in the rack.

Abstract: A circuit board support assembly includes a frame, an electronic component and a circuit board. The circuit board and the electronic component are each coupled to the frame along a common axis.

Abstract: A circuit board device includes one or more slots formed in a board, and one or more fastener members having one or more projections engageable into the slots of the board, to anchor the fastener member to the board, and to prevent the fastener member from moving relative to the board while welding the fastener member to the board with one or more solders. One or more electronic components may then be precisely and easily aligned with and secured to the fastener members with the other fastener members. A solder member may be applied on the board for securing to the solders.

Abstract: An optical module comprises (1) an optical device assembly having an optical device for converting one of optical and electric signals into the other; (2) a circuit board for mounting an electronic device to electrically connect with the optical device; (3) a lead frame having a lead pin, a board mounting part for mounting the circuit board, and a support part which are provided on a reference surface; (4) a holding member having a holding part for grasping and holding the optical device assembly, and a grasping part for grasping the support part of the lead frame; and (5) a resin member for encapsulating the optical device assembly, the circuit board, the holding member, and the lead frame.

Abstract: An adjustable circuit sled module for a mass storage device has a housing, a mass storage device, a circuit board, a cover and spacers. The spacers position the mass storage device to align the power and data interface ports of the mass storage device with corresponding power and data interface connectors of the circuit board. The resulting sled module can be adjusted to accommodate a variety of brands and sizes of mass storage devices.

Abstract: A bracket assembly includes a bracket which readily and easily couples with a printed circuit board. The bracket includes at least one tab assembly foldably attached with a support flange for supporting the printed circuit board. The bracket also includes an outer flange which is coupled with the computer chassis. Alignment apertures on the support flange and the printed circuit board facilitate the alignment of the printed circuit board, and allow for rework of the printed circuit board. Each tab assembly is adapted to frictionally engage with corresponding features on the printed circuit board.

Abstract: An EMC shield (10) attachable to a rear panel (40) of a computer enclosure defines a number of elongated openings (12) and forms a number of bars (14) alternating with the openings. The EMC shield includes at least one hook (20) folded back from the EMC shield at one side of at least one opening for engaging with the rear panel, a number of arch-shaped strips (16) protruding outwardly and forwardly on said bars, and a number of tabs (18) protruding outwardly and rewardly on said bars alternating with the strips.

Abstract: The invention pertains to housing for receiving a component which can be connected to the housing in a pluggable manner, in particular an optoelectronic transceiver, the housing having at least one pressing spring, which is deflected when the component is inserted. According to the invention it is provided that the at least one pressing spring (71, 72) tapers in its width in the direction of the interior of the housing. It is preferably of a trapezoidal design. Higher spring forces can be realized with it and it is ensured that a component which is plugged into the housing can be removed from the housing in a safe and reliable manner during unlocking of the housing.

Abstract: In part, and in addition to apparatus and methods presented, an expansion board to be connected/disconnected to/from its mother board easily is provided. A face of a CDC (Communication Daughter Card), which is an expansion board to be connected to the mother board of a computer system is covered by an insulating sheet. In the CDC, an edge of one end of this insulating sheet is extended so as to form a projection. A user can take this projection with fingers, thereby carrying and connecting/disconnecting the CDC to/from the mother board easily.

Abstract: A structure for a handheld device with a function of electrostatic discharge (ESD) protection has a circuit member (230), a displaying member (240), and a conductive supporting frame (250) with a hollow region (251). The circuit member and the displaying member are affixed to the conductive supporting frame at the hollow region to construct a subassembly (300). The subassembly is then mounted in a housing (202) consisting of upper and lower housings (210,212) at a location that the conductive supporting frame is just beside a gap (203) between the upper and lower housings. ESD-sensitive components (231,232) on the circuit member and the displaying member are surrounded by the conductive supporting frame, whereby ESD entering the housing via the gap which may cause a harm to the ESD-sensitive components and the displaying member is absorbed by the supporting frame and transmitted to ground via an electrical connection between the supporting frame and ground trace of the circuit member.

Abstract: An apparatus for guiding a card enclosure into a daughter card enclosure includes a daughter card removeably positioned within a cage for connecting the daughter card with a mother card. A cassette assembly removably positioned with the daughter card enclosure for connection with said daughter card includes a card configured for pluggable signal interconnection with the daughter card. A guide means for guiding the cassette assembly into proper alignment with the daughter card is mountable therewith and an associated stiffener using two mounting locations. The guide means is configured to insure full insertion of said cassette assembly before plugging in the card and insure an unplugged status of the card before extraction of the cassette assembly from the daughter card enclosure.

Abstract: An intrinsically safe portable programmer for communicating with the electronic process control equipment over a wireless communication link. The portable programmer comprises a microprocessor controlled electronic circuit housed in an enclosure formed from a polymers polystyrene having a low surface resistivity. The electronic circuit is mounted inside the enclosure with a low voltage battery supply and encased in epoxy to prevent sparking. The electronic circuit includes an infrared transmitter and a keypad. In response to keypad inputs, the electronic circuit generates control signals which are transmitted to the electronic process control equipment via the infrared transmitter.

Abstract: An electronic instrument has an instrument body 2, an operation unit 3, and an engagement link 4. The engagement link 4 removably attaches the operation unit 3 to the instrument body 2. The engagement link 4 has a first joint member 22 and a second joint member 23. The first joint member 22 engages with a lower end 3a of the operation unit 3. The second joint member engages with an upper end 3b of the operation unit 3. The link mechanism moves the second joint member 23 to release the second joint member 23 from the upper end 3b when the first joint member 22 moves toward an engaging position of the first joint member 22 with the lower end 3a. The link mechanism can move the second joint member 23 to engage with the upper end 3b while the first joint member 22 has been engaged with the lower end 3a.

Abstract: A fastening member for an electronic circuit board having an elastically deformable leg formed in a case for housing the electronic circuit board and a projection formed continuous with the leg to be engaged with the electronic circuit board so as to fasten the electronic circuit board on a prescribed mounting surface in the case. In the member, the projection is engaged with the electronic circuit board such that a prescribed angle is formed between a surface of the projection contacting the electronic circuit board, when the electronic circuit board is fastened on the mounting surface in the case. With this, since the tangent between the board contact surface and the electronic circuit board is variable within the range of the board contact surface, molding error can be tolerated (absorbed) and volumetric variation produced by temperature change can be readily coped with.

Abstract: A portable data carrier includes a card-shaped body having a recess for receiving a chip module. The chip module includes at least one semiconductor chip on a first main side of a chip carrier connected to the card-shaped body, and a metallization layer disposed on a second main side of the chip carrier and having contact lugs. The chip carrier has desired bending points which, upon the occurrence of bending stresses, reduce forces on the semiconductor chip and wire connections.

Abstract: A circuit board on which various electronic components are mounted is contained in a box-shaped resin case. The case is mounted on a bracket made of an iron plate by snap-fitting projections formed on the case to resilient hooks formed on the bracket. To correctly align the projections with respective resilient hooks by pushing down the case toward the bracket in a process of mounting the case on the bracket, a guiding projection slidably contacting one of the hooks and generating a thrusting force is formed on the case. The case is correctly engaged with the bracket by simply pushing down the case toward the bracket because the case is guided by the guiding projection. Thus, the case can be easily mounted on the bracket without fail.

Abstract: A fuse box has a base seat, a plug fuse inserted in the base seat, a breakdown display electric circuit board disposed in the base seat, an upper cover engaging with the base seat, and a connection band connected to the base seat and the upper cover. A light emitting device is disposed on the base seat. The breakdown display electric circuit board has a positive end, a negative end, the plug fuse connected to the breakdown display electric circuit board, a first resistance connected to the plug fuse in parallel, a second resistance connected to the plug fuse in parallel, the second resistance connected to the first resistance in series, the light emitting device connected to the first resistance in parallel and connected to the second resistance in series, a load connected to the plug fuse and the second resistance, and the negative end connected to the load.