Abstract: A wavelength division multiplexing/demultiplexing device is presented utilizing a polarization-based filter to separate odd and even wavelengths, or upper and lower channels of an input optical signal. The wavelength filter first converts the input signal to a predetermined polarization. A series of birefringent waveplates provide a polarization-dependent optical transmission function such that the polarized beam is decomposed into a first beam component carrying the first spectral band at a first polarization and a second beam component carrying the second spectral band at a second, orthogonal polarization. A beam displacer spatially separates the beam components into a pair of orthogonally-polarized beams. A quarter-wave plate converts these orthogonally-polarized beams into a pair of circularly-polarized beams, which are reflected by a mirror back along parallel optical paths through the quarter-wave plate, beam displacer, and waveplates.

Abstract: A composite heat sink with high density fins and a method for assembling the composite heat sink are disclosed. The composite heat sink includes a base and a plurality of fins detachably connected to each other, wherein each fin includes a plate and a bottom perpendicularly extended from a first end of the plate. Furthermore, each bottom of the fin is disposed on a surface of the base.

Abstract: A movable mechanism for using with an electrical apparatus, in which the electrical apparatus has a casing having a receptacle for mounting therein the movable mechanism, to be dissipated by at least one heat-dissipating device installed in the movable mechanism. The movable mechanism includes a housing pivotally connected to the electrical apparatus in receptacle and having a slit for replaceably inserting therein the at least one heat-dissipating device.

Abstract: A locking device adapted to secure a retractable storing device in a frame of an electrical apparatus is provided. The locking device includes a main body, an activating element assembled with the main body and having an activating button and a first engaging member thereon, and a handle pivotally connected to the main body and having a second engaging member for engaging with the first engaging member when the retractable storing device is secured in the frame, wherein the activating button, being invisibly disposed in a concavity of the main body, is used for disengaging the second engaging member from the first engaging member when the retractable storing device is retracted from the frame.

Abstract: A locking device adapted to secure a retractable storing device in a frame of an electrical apparatus is provided. The locking device includes a main body, an activating element assembled with the main body and having an activating button and a first engaging member thereon, and a handle pivotally connected to the main body and having a second engaging member for engaging with the first engaging member when the retractable storing device is secured in the frame, wherein the activating button, being invisibly disposed in a concavity of the main body, is used for disengaging the second engaging member from the first engaging member when the retractable storing device is retracted from the frame.

Abstract: The present invention discloses power supply cable for providing DC power from a power supply to a microprocessor of a personal computer. The output cable includes a plate-cable includes a first and a second metal plates insulated with an insulation layer between the first and second metal plates. The output cable further includes a plurality of capacitors disposed on the plate cable. Each of the capacitors has a first and second electrical terminals and each of the first and second electrical terminals connected to one of the first and second metal layers provided for storing electrical charges therein for transmitting through the metal layers for supplying power to the microprocessor. In a preferred embodiment, the plurality of capacitors disposed on the first metal plate with the first electrical terminal for each of the capacitors connected to the first metal plate.

Abstract: The present invention discloses a direct-current (DC) electric connector that includes plurality of conductive and insulation layers constituting a near-zero inductance connector. The connector further includes a top and a bottom insulation-and-protection covers covering and protecting the plurality of conductive and insulation layers. The top and bottom insulation-and-protection covers having a tapered outer surface for providing a tapered profile along a horizontal direction toward a connector opening for receiving a printed circuit board into the near-zero inductance connector. The connector further includes a locking cartridge for adaptively enclosing the near-zero inductance connector with the printed circuit board inserted therein. The locking cartridge has top and bottom surfaces each engages the top and bottom insulation-and-protection covers respectively for horizontally pushing toward a direction having a gradually increased profile height for generating a vertical pressing force.

Abstract: An electrical connector for electrically interconnecting a daughter board and a circuit board each having a plurality of contact pads comprises an insulative housing and a plurality of terminals received in the housing. The housing has a top face and an opposite bottom face. The housing defines a number of receiving areas recessed from the top face and a plurality of receiving holes located in the receiving areas and extending through the housing from the top face to the bottom face. Each terminal comprises a pair of U-shaped mounting beams, a base portion extending between corresponding ends of the mounting beams, a support portion extending between corresponding opposite ends of the mounting beams and an arcuate contact beam extending from the base portion and having a free end located on the support portion for electrically connecting with a corresponding contact pad of the daughter board.

Abstract: The present invention is related to a method for manufacturing lead frames and a lead frame material including an intermediate layer and a top layer. The intermediate layer is composed of a layer of nickel-cobalt alloy having 5 to 30 wt. % of cobalt and a thickness of 3 to 20 microinches and a layer of nickel or nickel alloy having a thickness of 10 to 80 microinches. The intermediate layer can inhibit the diffusion of the base metal to the surface of the leads. The top layer consisting of gold or gold alloy, which is composed of gold and at least one metal selected from the group consisting of palladium, silver, tin and copper and has at least 60 weight percent gold, has a thickness of 0.1 to 5 microinches.

Abstract: A socket connector includes a rectangular base plate adapted to be positioned on a circuit board and retaining an electronic device, such as an integrated circuit, thereon for establishing electrical connection between the electronic device and the circuit board by means of contacts retained therein. Bumps are formed on the base plate for engaging with notches defined in the electronic device to precisely positioning the electronic device with respect to the base plate. A retention module includes a frame having four wall segments defining an interior space therebetween for receiving the base plate. A pair of sideways projections is formed on one wall segment with aligned holes defined therein for receiving pivots of a resilient clip thereby making the clip movable between an open position where the base plate is exposed for receiving the electronic device and a closed position where the clip resiliently engages with the electronic device thereby securing the electronic device to the base plate.

Abstract: A contact strip includes a number of conductive contacts (4), a contact carrier (5) and a corresponding number of links (6) connecting corresponding contacts to the contact carrier. Each contact includes a contact portion (42) and a soldering portion (43) opposite the contact portion for attaching a solder ball for soldering to a printed circuit board. The contact portion is plated with gold using a molten gold plating liquid for enhancing electrical/mechanical characteristics of the contact portion. Each link defines a longitudinal slot (61) for obstructing a wicking path from the contact to the contact carrier. Furthermore, an elongate opening (52) is defined in the contact carrier above and perpendicular to a corresponding slot to further prevent the plating liquid from wicking up to the contact carrier, thereby preventing loss of the expensive plating liquid and reducing the cost of the contact.

Abstract: The invention relates to an automatic reset circuit for detecting much faster transient voltage variation between the supply voltage (VDD) and the electric ground (GND) of an electric system with noise and disturbance. The automatic reset circuit of the invention includes a plurality of detecting units, a plurality of voltage-couple devices connected with the detecting units, and a decision unit with an output port. The decision unit and the voltage-couple devices are also connected. The automatic reset circuit of the invention can detect nanosecond transient voltage variation between the supply voltage and the electric ground, and a reset is then enabled for protecting the inner circuits and surviving the normal operations of the electric system.

Abstract: Integrated circuits may be passivated by means of two deposited layers--one of phosphosilicate glass and one of silicon nitride. It was observed that if significant time elapsed between the deposition of the phosphosilicate and the silicon nitride, appreciable degradation of the underlying metallurgy, in the form of voids, occurred. This was traced to a change, over time, in the stresses to which the metallurgy was being subjected--from tensile to compressive. This problem has been solved in the present invention by the provision of a dry environment in which to store the integrated circuits between the application of the two passivation layers.

Abstract: A magnetic induction counting device includes: an inductive source having a permanent magnetic member disposed therein and a structure adapted to be worn on a worker's hand during material handling and counting operations; at least two sensing members made of Hall element for detecting the magnetic field of the inductive source and producing a voltage signal; a plurality of amplifiers respectively connected to the sensing members for receiving and amplifying the voltage signal of the sensing members; a sequential processor coupled with the amplifiers for outputting a pulse signal according to a sequential and unilateral condition of the voltage signal received from the amplifiers; and a counter functionally connected to the sequential processor for performing counting and displaying operations according to the pulse signal; thereby, during material handling and counting operations, automatic counting of the materials can be conveniently carried out in accordance with the movement of the worker's hand wearing

Abstract: Hydrogen storage materials are provided by a quaternary alloy of the formula:Zr.sub.1-x Ti.sub.x CrFe.sub.ywherein x has a value in a range from 0.1 to 0.3, and y has a value in a range from 1.2 to 1.4, and their hydrides.