Abstract: A cooling fan includes a fan housing, a rotor and a stator. The fan housing forms an air inlet and an air outlet at two opposite sides thereof, respectively. A base is received in the fan housing and arranged at the air outlet of the fan housing. A guiding wall extends upwardly from an outer periphery of the base. An outer diameter of the guiding wall decreases along a direction from the air inlet to the air outlet. A plurality of stationary blades extend from an outer surface of the guiding wall to the fan housing. The stator is arranged in the housing and mounted on the base, and the rotor is rotatably supported by the stator.

Abstract: The present disclosure provides a motor overload protection device that includes a driving gear, a loading wheel, and at least one protecting gear unit rotatably fixed to the loading wheel. The loading wheel defines a central through hole for rotatably receiving a rotor of a motor. The driving gear is fixed on the rotor. The at least one protecting gear unit is rotated by the rotor. A resistance between the at least one protecting gear unit and the loading wheel is predetermined. When the load on the loading wheel is less than or equal to the maximum load of the motor, the resistance keeps the loading wheel and the at least one protecting gear unit together rotating around the rotor of the motor. When the load is greater than the maximum load of the motor, the at least one protecting gear unit rotates relative to the loading wheel.

Abstract: An LED lamp includes a base, an LED module having a plurality of LEDs mounted on a top of the base, and a light-guiding module fixed on the LED module. The light-guiding module includes a plurality of mounted plates and a plurality of inserted plates intersecting and engaging the mounted plates. The mounted plates and the inserted plates cooperatively define a plurality of cavities to receive corresponding LEDs therein for guiding and reflecting light generated by the corresponding LED in a predetermined manner.

Abstract: A circuit board includes four positioning pads placed on a surface of the circuit board, four positioning holes corresponding to the positioning pads, respectively, and a solder mask placed on the surface around the periphery of the positioning pads. An arc-shaped recess is defined at a side of each positioning pad near the corresponding positioning hole and the space between the edges of the positioning pad and the positioning hole ranges from 0.2 mm to 0.5 mm.

Abstract: The present invention provides a method for generating electronic patent application files, which includes steps of: creating multiple extensible markup language (XML) templates; setting basic requirements of drafted files; mapping the XML templates to chapter headers in the drafted files; analyzing and verifying whether the drafted files meet the basic requirements; parsing contents of the drafted files into corresponding XML templates if the drafted files meet the basic requirements; and generating XML patent application files according to the XML templates. A related system is also disclosed.

Abstract: A method and system for monitoring one or more objects by an electronic device are provided. The method includes defining a distance threshold between the electronic device and an object having a RFID tag, calculating a distance between the electronic device and the object, and generating alerts upon detecting that the distance is greater than the distance threshold.

Abstract: A PCI load card includes a PCI interface, an operational amplifier, at least two switches, and a controller. A terminal of each switch is connected to an input terminal of the operational amplifier and connected to a standby power pin of the PCI interface via a first resistor. The other terminals of the at least two switches are respectively connected to ground via at least two resistors. The other input terminal of the operational amplifier is grounded. An output terminal of the operational amplifier is connected to a first terminal of the controller, a second terminal of the controller is connected to a system power pin of the PCI interface, a third terminal of the controller is grounded, the power of the controller is adjusted by controlling the at least two switches.

Abstract: A testing device includes a shielding case and a driving member opening and closing the shielding case. The shielding case includes a receiving space for receiving an electronic device therein, a cover, and a base. The driving member includes a first driving member mechanically connected to an outside of the cover of the shielding case and a second driving member mechanically connected to an outside of the base of the shielding case. The first driving member moves the cover vertically relative to the base. The second driving member moves the base horizontally relative to the cover. Movement of the shielding case in an open position allows the electronic device to be received in or removed from the shielding case. Movement of the shielding case in a closed position allows the electronic device to be tested.

Abstract: A display driving circuit includes a temperature compensation adjustment circuit, a control circuit, a full bridge circuit, and a transformation circuit. The temperature compensation adjustment circuit provides a current signal for the control circuit. The value of the current signal changes along with environment temperature changes. The control circuit controls the full bridge circuit based on the current signal. An output voltage signal of the full bridge circuit decreases as the current signal increases, and when the environment temperature decreases. The transformation circuit amplifies the output voltage signal of the full bridge circuit to drive a display.

Abstract: A power saving device includes a first power connector adapted for connecting to a power source, a second power connector adapted for connecting to a power wire of a display, an infrared sensor, an infrared coupling circuit, a wave shaping circuit, and a switch circuit connected between the first and second power connectors. The infrared sensor senses user status and initiates a user status signal. The wave shaping circuit receives the user status signal via the infrared coupling circuit and converts the user status signal to a voltage signal. The switch circuit receives the voltage signal and converts the voltage signal to a control signal to control the connection between the first power connector and the second power connector.

Abstract: A system includes several functional modules to alert a user that an accessory has not been placed back into a bay of an electronic device after a predetermined time period. A sensor is configured for determining if the accessory has been received in the bay after the time period has expired. The sensor is further configured for generating a notification if the accessory has not been received in the bay after the time period has expired. An audio module is configured for receiving the notification, and transmitting an audio alarm via a speaker indicating that the accessory has not been received in the bay after the time period has expired. A display module is configured for receiving the notification, and displaying a graphic alarm on a display panel of the electronic device.

Abstract: A wireless transceiver includes an antenna, a filter, a radio frequency (RF) signal processing circuit, a shared amplifying circuit, a first switch circuit, a second switch circuit, a sending power amplifier, and a single-pole double-throw (SPDT) switch. The filter is connected between the antenna and the SPDT switch. The RF signal processing circuit outputs a first control signal when the antenna is utilized to send RF signals, and outputs a second control signal when the antenna is utilized to receive RF signals. The first switch circuit is connected between the shared amplifying circuit and the sending power amplifier, and switches on according to the first control signal. The second switch circuit is connected between the shared amplifying circuit and the SPDT switch, and switches on according to the second control signal. The SPDT switch selectively connects the filter to the sending power amplifier or the second switch circuit.

Abstract: An exemplary housing includes a metallic glass main body; and two coatings formed on the metallic glass main body. The coatings include an adhesive layer on the metallic glass main body, and an outer layer formed on the adhesive layer. Surface treating methods for making present housing are also provided.

Abstract: A system with at least two basic input-output system (BIOS) memories includes a chip unit, a control unit, and two or more BIOS memories. The chip unit includes a control pin. The control unit includes an enable pin and N output pins. The enable pin of the control unit is connected to the control pin of the chip unit. Each of the N BIOS memories is connected to one of the N output pins of the control unit correspondingly. The chip unit is configured to start the control unit. The control unit is configured to start the N BIOS memories according to voltages of the output pins of the control unit. N is an integer greater than one.

Abstract: An LED lamp includes a first heat sink, a second heat sink thermally contacting the first heat sink, and an LED module mounted on the first heat sink. The first heat sink comprises a plate and a plurality of first fins extending from the plate. The plate has a bare area on a top surface thereof. The LED module is mounted on the bare area and surrounded by the first fins of the first heat sink. The second heat sink comprises a base thermally contacting a bottom surface of the plate of the first heat sink and a plurality of second fins arranged at a bottom surface of the base of the second heat sink. Heat pipes are sandwiched between the plate and base of the first and second heat sinks.

Abstract: An electronic system such as a computer system includes a casing defining an opening at a side thereof, a motherboard arranged in the casing, a hard disk located at a side of the motherboard and a heat dissipation structure covering the opening of the casing. The motherboard includes a printed circuit board facing toward the opening of the casing, first electronic components and second electronic components mounted on the printed circuit board and facing toward the opening. The heat dissipation structure includes a base engaging with the casing and fins extending from the base and outside of the casing. The base includes a first engaging portion contacting the first and second electronic components and a second engaging portion contacting the hard disk. The first engaging portion and the second engaging portion are in different levels from each other.

Abstract: A system for testing the accuracy of an electronic compass is disclosed. The system includes a circular track, a compass seat, an electromagnetic element, a driver, a power source, a calculator, and a magnetic shielding chamber. The electromagnetic element is disposed on the circular track and powered by the power source to generate a magnetic field. The electronic compass is installed on the compass seat and surrounded by the circular track. As such, the electronic compass can measure the magnetic field of the electromagnetic element and calculate direction relative to the electromagnetic element at different points of the circular track when the electromagnetic element is driven by the driver to move along the circular track. The magnetic shielding chamber is for shielding the electromagnetic element and the electronic compass from interference of external magnetic fields.