Abstract: A printed circuit board includes a layer. A layer of copper is covered on a surface of the layer. A through hole passes through the printed circuit board. An approximately C-shaped thermal engraving is defined in the surface of the layers, surrounding the through hole and without being covered by the layer of copper. An opening of the thermal engraving faces an output terminal of the power supply.

Abstract: A method for making cathode slurry is provided and includes the following steps. First, a plurality of electron emitters, an inorganic binder, and an organic carrier are provided. Second, the plurality of electron emitters, the inorganic binder, and the organic carrier are mixed to obtain a mixture. Third, the mixture is mechanically pressed and sheared.

Abstract: A fastening assembly includes a connecting member, a mounting member mounted to the connecting member, and a sliding member. The mounting member includes a first fixing portion. The sliding member is slidably received in the mounting member and the connecting member. The sliding member includes a first end exposed out of the first fixing portion, and a second end slidably received in the connecting member. The second end of the sliding member is operable to be extended out of or substantially coplanar with an end of the connecting member. The fastening assembly can be utilized to mount a heat sink to a board.

Abstract: A heat dissipating device includes a heat dissipating element and a bracket. The bracket includes a first fixing portion and a second fixing portion. The first fixing portion is to fix the heating dissipating element. The second fixing portion is movably mounted to the first fixing portion. The second fixing portion is configured to fix the bracket to another apparatus to adjust a distance between the heat dissipating element and the apparatus.

Abstract: When a controller identifies a universal serial bus (USB) device connected to a USB interface, it outputs a control signal to close a relay and a first start test signal to an electronic device to test a USB interface of the electronic device. When the test of the USB interface is completed, to the controller adds one to an inside counter, and determines whether the count value reaches a preset count value. If the count value reaches the preset count value, the controller outputs a finish test signal to the electronic device. If the count value does not reach the preset count value, the controller controls the closed relay to open and outputs a second start test signal to close a next relay to test a next USB interface of the electronic device corresponding to the now closed relay.

Abstract: A keyboard includes a main body and a support in the main body. The main body includes a bottom defining two slots and two opposite sidewalls each defining a receiving hole. The slots communicate with the receiving holes, respectively. The support includes a rotation member, two driving members and two connecting members received in the two slots, respectively. Each connecting member includes a first arm and a second arm, wherein two ends of the first arm are rotatably connected to the rotation member and the second arm, respectively, the second arm is further rotatably connected to one of the driving members, and the second arm moves together with the one of the two driving members, causing the connecting ends of the first arm and the second arm to extend out of one of the two slots.

Abstract: An exemplary touch screen apparatus comprises a display screen, a first reflector, a first infrared light source, and an infrared light receiving unit. The display screen includes a display area. The first reflector is disposed outside said display screen and surrounds the display area. The first reflector has a first focal point, and the first infrared light source is disposed on the first focal point. The infrared light receiving unit is capable of receiving the infrared light from the display screen.

Abstract: A portable sound box includes a main body and a clip. The main body includes a battery for supplying power to the portable sound box. Thus, the portable sound box can supply power on its own. The clip is fixed to the main body and configured for clipping to an external object. Thus, the portable sound box can attached to the external object instead of standing on a surface.

Abstract: A cathode composite material includes a cathode active material particle having a surface, and a continuous aluminum phosphate layer coated on the surface of the cathode active material particle. A material of the cathode active material particle is layered type lithium nickel oxide. The present disclosure also relates to a lithium ion battery and a method for making the cathode composite material.

Abstract: A charging device for charging a portable electronic device includes a voltage regulating unit and a charger body electrically connected to the voltage regulating unit. The voltage regulating unit is configured for receiving electric energy from an external power source and converting the external power into a stable power. The charger body receives the stable voltage and transfers the electric energy to the portable electronic device via inductive coupling to charge the portable electronic device.

Abstract: A hard disk drive (HDD) bracket for fixing a HDD includes an arm, a frame pivotably connected to the arm, a handle mounted to the frame, and a fixing member slidably attached to the arm and capable of engaging with both of the handle and the arm.

Abstract: An electronic device includes a frame having a protrusion, a support, and a hinge assembly. The hinge assembly rotatably connects the frame and the support. The hinge assembly includes an elastic member providing a force pulling the frame and the support to move towards each other. The protrusion of the frame and the support cooperatively support the electronic device on a surface.

Abstract: A process for joining a stainless steel part and a silicon carbide ceramic part comprising: providing a SUS part, a SiC ceramic part, a Mo foil and a Ti foil; placing the SiC ceramic part, the Mo foil, the Ti foil, and the SUS part into a mold, the Mo foil and the Ti foil located between the SiC ceramic part and the SUS part, the Mo foil abutting the SiC ceramic part, the Ti foil abutting the SUS part and the Mo foil; placing the mold into a chamber of an hot press sintering device, heating the chamber and pressing the SUS part, the SiC ceramic part, the Mo foil, and the Ti foil at least until the SUS part, the SiC ceramic part, the Mo foil and the Ti foil form a integral composite article.

Abstract: A container data center includes a mobile container and a number of server systems. The mobile container includes a bottom wall, an inner container portion and an outer container portion. The inner container portion includes a first top wall opposite to the bottom wall, and a number of first sidewalls connected between the first top wall and the bottom wall. The outer container portion includes a second top wall facing the bottom wall, and a number of second sidewalls connected between the second top wall and the bottom wall. The second sidewalls surround the inner container portion. A passage is formed between the first and second top walls and between the first and second sidewalls. The second top wall and the second sidewalls define a number of through holes. The server systems are installed in the inner container portion.

Abstract: A centrifugal fan includes an impeller and a housing receiving the impeller therein. The impeller includes a hub and blades extending radially from the hub. The housing includes a bottom wall, a sidewall extending upwardly from the bottom wall and a bracket for supporting the impeller thereon. The bottom wall defines an air inlet therein. A plurality of protruding posts extend downwardly from a bottom surface of the bottom wall around the air inlet. Each of the protruding posts defines a screw hole therein. The bracket is located in the air inlet. The bracket defines a plurality of through holes corresponding to the protruding posts respectively. The protruding posts of the bottom wall are respectively inserted into the through holes of the bracket. A plurality of bolts are respectively screwed into the screw holes of the protruding posts to connect the bracket and the bottom wall together.

Abstract: A method for booting up a mobile phone quickly is disclosed. The method includes the steps of: driving hardware devices when the mobile phone is turned on; initializing application software installed in the mobile phone; loading data in the mobile phone from a storage to a memory; creating a table for each kind of data in the memory, and ordering data in each table according to a particular order condition; converting each table into a binary file, and storing the binary file in the storage; loading the binary file of each table directly from the storage to the memory when the mobile phone is turned on. A related quickly booting mobile phone is also disclosed.

Abstract: A coupling mechanism includes a pivot assembly and a lifting assembly. The pivot assembly includes a first bracket, a pivot pin, a second bracket, and a cam piece. The second bracket is rotatably mounted to the first bracket via the pivot pin and has a valley portion recessed from one surface thereof. The cam piece is mounted to the pivot pin for holding the second bracket at any angle. The cam piece has a peak portion formed on one surface thereof and received in the valley portion of the second bracket at a closed position. The lifting assembly is adjustably assembled to the second bracket such that the lifting assembly is pivotally assembled with the first bracket.

Abstract: An exemplary lens barrel includes a hollow main body. The hollow main body includes a first end at an object side, and an opposite second end at an image side. The hollow main body also including a cylindrical inner surface adjacent to the first end, a partially conical inner surface adjacent to the second end, and a ring-shaped groove located between the cylindrical inner surface and the partially conical inner surface. The partially conical inner surface faces toward the first end. A cone angle of the partially conical inner surface is in a range from 8 degrees to 16 degrees.

Abstract: An exemplary computer case includes an external shell, a circuit board received in the external shell, and a dehumidification device. The circuit board includes a PCI socket providing an auxiliary power supply when the computer shuts down but the computer case retains electrical connection with an external AC power source. The dehumidification device includes a dehumidification card received in the PCI socket for obtaining the auxiliary power supply therefrom and a remote device. The dehumidification card includes a fan for generating airflow to remove moisture from the computer case and a sensor detecting a humidity inside the computer case. The remote device includes a display unit for displaying the result. When the humidity exceeds a predetermined value, the computer is not powered up until the fan evacuates the excess moisture from the computer case and the humidity falls below the predetermined value.

Abstract: A heat dissipation device includes a canister filled with a phase-changeable working fluid, a housing hermetically fixed to a top of the canister and communicating with the canister, a fan located above a top of the housing and an impeller comprising a driving member received in the housing, an annular magnet accommodated in the hub and an axle coaxially connecting the driving member and the annular magnet together. The fan includes a plurality of windings fixed on an inner side thereof. When the working fluid is heated and vaporized to move through the driving member, the driving member is driven by the vaporized working fluid to rotate, whereby the annular magnet rotates within the windings to cause the windings to generate a current.