摘要:
A light-emitting diode lighting apparatus includes a light emitting package structure; a plurality of light-emitting diode (LED) units; a rectifier unit for driving the light-emitting diode (LED) units; a first linear constant current unit electrically coupled with an output end of the light-emitting diode (LED) units; a light-modulating unit electrically coupled with the first linear constant current unit for modulating a current of the first linear constant current unit; a second linear constant current unit electrically coupled with the rectifier unit; and an electrolytic capacitor coupled and cooperated with the second linear constant current unit for providing a buffer for the light-emitting diode (LED) units. The second linear constant current unit and the electrolytic capacitor are both electrically coupled with an input end of the light emitting diode (LED) units.
摘要:
A white light emitting diode comprising a substrate layer, two conductive frames, a light emitting unit, two conductive wires, and a packaging element is provided. The substrate layer is made from a curing reaction of first mixture, and the first mixture includes a curable resin, a curing agent, a phosphor material, and a modified thermal conductive nano-material, wherein the modified thermal conductive nano-material is made from a thermal conductive nano-material and a silane compound. The packaging element is made from a curing reaction of second mixture, and the second mixture includes a curable resin, a curing agent, a phosphor material, and a modified thermal conductive nano-material, wherein the modified thermal conductive nano-material is made from a thermal conductive nano-material and a silane compound. The chip-type white light emitting diode has a good heat-dissipating effect and a good luminous efficiency without additional heat dissipation fins. In addition, the manufacturing method of the chip-type white light emitting diode is a relatively simple process for mass production.
摘要:
A white light emitting diode comprising a substrate layer, two conductive frames, a light emitting unit, two conductive wires, and a packaging element is provided. The substrate layer is made from a curing reaction of first mixture, and the first mixture includes a curable resin, a curing agent, a phosphor material, and a modified thermal conductive nano-material, wherein the modified thermal conductive nano-material is made from a thermal conductive nano-material and a silane compound. The packaging element is made from a curing reaction of second mixture, and the second mixture includes a curable resin, a curing agent, a phosphor material, and a modified thermal conductive nano-material, wherein the modified thermal conductive nano-material is made from a thermal conductive nano-material and a silane compound. The chip-type white light emitting diode has a good heat-dissipating effect and a good luminous efficiency without additional heat dissipation fins. In addition, the manufacturing method of the chip-type white light emitting diode is a relatively simple process for mass production.
摘要:
A self-service terminal includes a first cabinet, a cover rotatably secured on the first cabinet, and an adjustment device received in the first cabinet. A card slot for inputting/outputting a cash card is defined in the cover, and a positioning member is attached to the user interface cover. The adjustment device includes a positioning tray and a mounting member slidably secured to the positioning tray. A reader is attached to the positioning tray and includes an interface. The mounting member includes a slanted side plate abutting the positioning tray; wherein the positioning member is engaged with the positioning tray, for aligning with the interface of the reader and the card slot of the cover.
摘要:
A height-adjustable display device for a display includes a base defining a chamber, a supporting member and a latching member. The supporting member is received and vertically movable in the chamber. The supporting member is connected to the display. The supporting member defines a plurality of grooves arranged a vertical direction. The latching member is pivotedly mounted to the base. The latching member includes a hook able to be received in one of the grooves, thereby retaining the supporting member in a desired vertical position.
摘要:
A method in a video playback system for playing a video with a specific playback speed in accordance with a video feature and a playback record is described. The system allows the playback record records a preceding playback speed corresponding to the video previously played to learn user preferences for a user. This makes the specific playback speed more suitable for the user without any adjustment. In addition, the system also allows the user input a resetting playback speed to actively adjust the specific playback speed if the original specific playback speed is not suitable for the user.
摘要:
Three new crystalline forms of pemetrexed diacid, preparation methods and uses thereof are disclosed. These preparation processes are simple and have better practicality.
摘要:
A method of manufacturing a housing includes steps of providing a transparent film including a first surface and an opposing second surface. Forming a patterned layer on the first surface of the transparent film, forming a metallic film layer on the first surface of the transparent film to cover the patterned layer, applying an adhesive material on the metallic film. Then placing the transparent film in the mold, the second surface of the transparent film attached to the inner molding surface of the mold. And at last injecting plastic material into the mold to form a plastic base adhered with the transparent film. The housing can have both predetermined patterns and metallic luster.
摘要:
A method for molding a nut into a cover of an electronic device is provided. The nut includes a chassis defining a threaded blind hole therein. The method includes the following steps: providing a core mold, the core mold including a molding surface and a recess defined in the molding surface; placing the nut on the core mold with the chassis fittingly engaged in the recess; creating a negative pressure within the recess to firmly secure the chassis in the recess; attaching a cavity mold to the core mold, the cavity mold and the core mold cooperatively forming a molding cavity receiving the nut therein; and injecting molding material into the molding cavity to form the cover with the nut embedded therein. A molding device for molding the nut into the cover is also provided.
摘要:
A single mode fiber having a core, an inner cladding, a depressed cladding, and an outer cladding composed of pure silica glass. The core is surrounded in sequence with the inner cladding and the depressed cladding. The core has silica glass doped with germanium and fluorine, with a diameter (a) of 8.0-8.8 μm, a relative refractive index difference (Δ1) of 0.35-0.38%, and the contribution of fluoride (ΔF) is −0.09±0.02%. The inner cladding has silica glass doped with germanium and fluorine, with a diameter (b) of 18-21 μm and a relative refractive index difference (Δ2) of 0±0.02%. The depressed cladding has silica glass doped with fluorine, with a diameter (c) of 26-36 μm and a relative refractive index difference (Δ32) at the external interface thereof is between −0.22 and −0.35%, and a relative refractive index difference (Δ31) at the internal interface thereof is between −0.20 and −0.35%, and Δ32≦Δ31. The fiber has a good bending resistance, good mechanical properties, and extended service lifetime, and prevents the additional stresses generated by bending from passing on to the core, thereby reducing attenuation.