Abstract: A flash memory device includes a Chip-On-Board (COB) type circuit board and a number of first and second contacts electrically connected to the circuit board. Each first contact includes a stiff first contact portion formed on an upper surface of the circuit board. Each second contact includes a cantilevered planar second contact portion extending along the front-to-rear direction. When the flash memory device is inserted into a USB 3.0 receptacle connector, the first and the second contact portions jointly electrically connect with the USB 3.0 receptacle connector. The planar second contact portions provide larger contacting area for mating with the corresponding contacts of the USB 3.0 receptacle connector.

Abstract: A flash memory device includes a circuit board and a contact module slidable with respect to the circuit board. The circuit board includes a plurality of first contacts each having a stiff first contact portion. The contact module includes a slider and a plurality of second contacts fixed to the slider. The slider is slidable with respect to the circuit board along a front-to-rear direction between a first position and a second position. The flash memory device is compatible to USB 2.0 and USB 3.0 receptacle connectors via the slidable contact module.

Abstract: A flash memory device includes a circuit board and a contact module slidable with respect to the circuit board. The circuit board includes a plurality of first contacts each having a stiff first contact portion. The contact module includes a slider and a plurality of second contacts fixed to the slider. The slider is slidable with respect to the circuit board along a front-to-rear direction between a first position and a second position. The flash memory device is compatible to USB 2.0 and USB 3.0 receptacle connectors via the slidable contact module.

Abstract: A flash memory device includes a circuit board and a contact module slidable with respect to the circuit board. The circuit board includes a plurality of first contacts each having a stiff first contact portion. The contact module includes a slider and a plurality of second contacts fixed to the slider. The slider is slidable with respect to the circuit board along a front-to-rear direction between a first position and a second position. The flash memory device is compatible to USB 2.0 and USB 3.0 receptacle connectors via the slidable contact module.

Abstract: A flash memory device includes a circuit board and a contact module slidable with respect to the circuit board. The circuit board includes a plurality of first contacts each having a stiff first contact portion. The contact module includes a slider and a plurality of second contacts fixed to the slider. The slider is slidable with respect to the circuit board along a front-to-rear direction between a first position and a second position. The flash memory device is compatible to USB 2.0 and USB 3.0 receptacle connectors via the slidable contact module.

Abstract: A flash memory device includes a Chip-On-Board (COB) type circuit board and a number of first and second contacts electrically connected to the circuit board. Each first contact includes a stiff first contact portion formed on an upper surface of the circuit board. Each second contact includes a cantilevered planar second contact portion extending along the front-to-rear direction. When the flash memory device is inserted into a USB 3.0 receptacle connector, the first and the second contact portions jointly electrically connect with the USB 3.0 receptacle connector. The planar second contact portions provide larger contacting area for mating with the corresponding contacts of the USB 3.0 receptacle connector.

Abstract: A cooling system for a projector is provided and disposed in the projector. When a sensing temperature of the projector sensed by a thermal sensor of the cooling system is higher than a maximum temperature, a control module controls a fan to increase a rotation speed. When the sensing temperature of the projector sensed by the thermal sensor is lower than a minimum temperature, the control module controls the fan to decrease the rotation speed. As a result, the temperature of the projector is maintained within a proper range.

Abstract: An electronic storage device for connecting with a host system in accordance with the present invention includes a cover having a body section and a protection section bending from one end of the body section, and a main body having an electrical connector with an interface and defining a receiving space. The body section forms a positioning section of polygonal shape at the other end of the cover. The main body includes at least one cooperating portion disposed in the receiving space and having a flat cooperating surface. The body section of the cover covers the main body with the protection section covering the interface of the electrical connector to protect the interface. The positioning section is received in the receiving space of the main body and the main body is capable of rotating relative to the cover with the at least one cooperating portion rotating along the polygonal edge of the positioning section and being compressed by the positioning section to produce deformation.

Abstract: An electronic storage device for connecting with a host system in accordance with the present invention includes a cover having a body section and a protection section bending from one end of the body section, and a main body having an electrical connector with an interface and defining a receiving space. The body section forms a positioning section of polygonal shape at the other end of the cover. The main body includes at least one cooperating portion disposed in the receiving space and having a flat cooperating surface. The body section of the cover covers the main body with the protection section covering the interface of the electrical connector to protect the interface. The positioning section is received in the receiving space of the main body and the main body is capable of rotating relative to the cover with the at least one cooperating portion rotating along the polygonal edge of the positioning section and being compressed by the positioning section to produce deformation.

Abstract: A fuel cell system is adapted for use with at least one electrical power source. The fuel cell system includes: a fuel cell body for receiving a fuel, and for generating electrical power; a fuel supply unit adapted to be coupled electrically to the electrical power source, coupled to and in fluid communication with the fuel cell body, and having the fuel stored therein; and a manual driving unit coupled to the fuel supply unit, and operable to permit transfer of the fuel stored in the fuel supply unit to the fuel cell body when electrical power of the electrical power source is insufficient to drive the fuel supply unit for transferring the fuel to the fuel cell body.

Abstract: An optical projection apparatus comprising an illumination system, a light valve, an imaging system, a power supply circuit and a generator are provided. The illumination system with a color wheel is providing a light beam. The light valve is disposed on the transmitting path of the light beam for transforming the light beam into an image light beam. The imaging system is also disposed on the transmitting path of the image light beam. The power supply circuit is electrically connected to the illumination system and the light valve is connecting with an external power supply. The generator is electrically connected to the power supply circuit. The color wheel connected to the generator drives the generator to generate electric power. The electric power is transmitted to the power supply circuit and powers the optical projection apparatus. Consequently, overall power consumption of the optical projection apparatus is reduced.

Abstract: An electric screen for a projector is provided. The electric screen utilizes a photo-electric conversion apparatus to convert received photon energy into electric energy and stores the electric energy in a storage battery. A motor is driven by the electric energy stored in a storage battery to extend or retract a screen. The electric screen further has a switch, the electric screen cooperates with the projector more efficiently.

Abstract: A cooling system for a projector is provided and disposed in the projector. When a sensing temperature of the projector sensed by a thermal sensor of the cooling system is higher than a maximum temperature, a control module controls a fan to increase a rotation speed. When the sensing temperature of the projector sensed by the thermal sensor is lower than a minimum temperature, the control module controls the fan to decrease the rotation speed. As a result, the temperature of the projector is maintained within a proper range.

Abstract: An integrated structure comprises a north bridge substrate, a CPU, and a north bridge chip. The north bridge substrate has a first surface and a second surface opposite to the first surface. A first area and a plurality of first pads are disposed on the first surface. A second area and a plurality of second pads are disposed on the second surface. The first pads are electrically connected with the second pads by a plurality of conducting traces. The CPU is disposed on the first area of the first surface and is electrically connected with the first pads. The CPU is electrically connected with the second pads via the first pads. North bridge chip is disposed on the second area of the second surface and is electrically connected with the second solder pads.

Abstract: A chip test device is provided for using a printed circuit board to perform a test process. The printed circuit board includes a pin probe socket having a plurality of pin probe holes. A chip to be tested includes a plurality of protruding electrodes. The chip test device comprises a test base for electrically coupled to the chip to be tested, a plurality of elastic first pin probes, and a test converting board having a first layer with a plurality of pin probe holes coupled to a corresponding one of the protruding electrodes and a second layer with a plurality of second pin probes coupled to a corresponding one of pin probes on the printed circuit board.

Abstract: A chip-testing socket using surface mount technology is used for holding a ball grid array (BGA) chip to be tested. The chip-testing socket includes a base and a fixing portion. The base has a number of windows for positioning to a circuit board, and a number of elastic pin probes electrically connected to the circuit board. The base could be disposed on the circuit board by using surface mount technology. The fixing portion is applied to fix the chip on the base wherein the fixing portion can be disposed to the base in a removable way.