Abstract: A multi-lamp driving system includes a power supply and at least one balance transformer. Each balance transformer includes two cores, two primary windings, two secondary windings and two protection windings. Each primary winding is wrapped around a core and serially connected to a lamp to form a first circuit branch in parallel connection with each other. The first circuit branches are powered by the power supply. The Each secondary winding is wrapped around a core and connected to a primary winding. The two secondary windings are connected in series to form a short circuit loop. Each of the protection windings is wrapped around a core and connected to a primary winding. The protection windings are wrapped in opposite directions and connected in series to form a second circuit branch. The second circuit branch outputs voltage signals to the power supply when induced voltages crossing the protection windings are unequal.

Abstract: An electric connector includes a female connector and a male connector. The female connector defines a first sliding groove, a second sliding groove parallel to the first sliding groove and a guiding slot communicating with the first sliding groove and the second sliding groove. The guiding slot includes a first guiding slot and a second guiding slot communicating the first guiding slot with the second sliding groove. The first sliding groove and the first guiding slot collectively form a step portion. The male connector includes a latching hook to engage with the first sliding groove and the second sliding groove. The latching hook slides along the first sliding groove to be received in the first guiding slot and resist on the step portion to combine the male connector with the female connector. The latching hook sides along the second guiding slot to release the male connector from the female connector.

Abstract: A static-conducting sheet of conductive material is provided. The static-conducting sheet includes a longitudinal substrate, two fixed portions and at least one elastic arm. The fixed portion includes a perpendicular portion and a lateral portion. The perpendicular portion extends from two opposite ends of the longitudinal substrate. The perpendicular portion extends perpendicularly upward from the planar surface. The lateral portion is parallel to the planar surface. The elastic arm includes a fixed end and a distal end. The fixed end is fixed on the longitudinal substrate. The arm extends perpendicular from the planar surface. The arm includes a fixed end and a distal end. The fixed end is connected to the longitudinal substrate, and the distal end is hooked.

Abstract: An image sensor holder includes a frame, first and second slidable holders, first and second driving devices, first and second driving arms, and at least two elastic members. The first slidable holder is slidably mounted on the frame. The second slidable holder is slidably mounted on the first slidable holder. The first and second driving devices are separately mounted on the frame. The first driving arm is mounted on the frame and contacts to the first slidable holder and the first driving device by opposite ends thereof. The second driving arm is slidably mounted on the frame extending from the second slidable holder, and contacts the second driving device by an end thereof. The two elastic members are separately positioned between the first holder and the frame and between the first holder and the second holder.

Abstract: A paper-out mechanism includes a paper out wall and a paper out board. The paper out wall defines a paper out opening. The paper out opening includes a first edge and a second edge facing to the first edge. The paper out board is slidably mounted on the paper out wall below the paper out opening. The paper out board includes an adapter portion which includes a first side and a second side. A distance between the first side and second side is greater than a distance between the first edge and the second edge. The paper out board is slidable between a first position and a second position. In the first position, the first side is in alignment with the first edge. In the second position, the second side is in alignment with the second edge.

Abstract: The present invention relates to a board inverter and a boarding inverting system. The board inverter includes a support, a first board picking device, an second board picking device and a controller. Each of the first board picking device and the second board picking device includes a driving mechanism and a first board picking device. The driving mechanism comprises a first linear driving means mounted on the support, a second linear driving means mechanically coupled to the first linear driving means, and a rotary driving means attached to the second linear driving means. The controller is connected to all the power supply members. The controller controls the motion of the first board picking device and the second board picking device such that the first board picking device and the second board picking device cooperatively inverting workpieces transmitted on a production line. The board inverter can be installed on a production line without altering the arrangement of existing production line.

Abstract: A fastening device for fixing an electronic device includes a base board; a hook fixed on the base board and capable of inserting into the electronic device; a locking member attached on the base board, the locking member is rotatable in a first rotating plane; an actuating member attached on the base board and adjacent to the locking member, and a resilient member comprising two ends and a winding connecting with the two ends. The actuating member is rotatable between a first position and a second position in a second rotating plane, which is perpendicular to the first rotating plane. The actuating member contacting with the locking member. One of the two ends fixed on the actuating member, and the other one of the two ends fixed on the baseboard. The winding unrestrained disposed by the two ends.

Abstract: A RF circuit includes a master PCB, a plurality of slave PCBs and a plurality of antennas. The master PCB includes at least two RF ICs and at least two transceiving diplexer groups for tranceiving different frequency bands. Each transceiving diplexer group includes a plurality of transceiving diplexers transceiving a same frequency band and electrically connected to the RF ICs via PCB tracks without intersection. Each slave PCB includes a frequency division diplexer electrically connected to at least two transceiving diplexers respectively belonging to different tranceiving diplexer groups for respectively transmitting different frequency bands. Each antenna electrically connects to one of the division diplexers.

Abstract: A cable immobilizing device for an electronic device. The cable immobilizing device includes a buckle and a sleeve. The buckle is fixed on a shell of the electronic device. The buckle includes two juts facing to each other. The two juts define a slot therebetween to receive a cable of the electronic device. The sleeve is configured to enclose the cable, the outer diameter of the sleeve is lager than the width of the slot.

Abstract: An apparatus for detecting electromagnetic wave includes an electromagnetic wave sensor, a first electrode and a second electrode spaced from each other and electrically connected to the electromagnetic wave sensor, and a measuring device electrically connected to the first electrode and the second electrode. The electromagnetic wave sensor includes a carbon nanotube structure. The carbon nanotube structure includes a plurality of carbon nanotubes extending along a same direction from the first electrode to the second electrode. The measuring device is capable of measuring resistance of the carbon nanotube structure.

Abstract: A clamp includes a pivot, a first lever, a second lever, and two stretched resilient members. The first and second levers are pivotally coupled to each other via the pivot. Each of the first and second levers includes a first handle and, a second handle arranged at opposite sides of the pivot. Each of the first and second levers includes a first jaw member arranged on a distal end of the second handle thereof and a second jaw member arranged on a distal end of the first handle. One of the stretched resilient members is interconnected between the first handle of the first lever and the second handle of the second lever, and the other of the stretched resilient member being interconnected between the second handle of the first lever and the first handle of the second lever.

Abstract: An exemplary warning method for avoiding eye stress of a computer user includes: capturing a number of consecutive images of the face of a computer user; processing the images to obtain a number of values each indicative of a degree of openness of the eyes of the computer user; counting an amount of values exceeding a predetermined threshold to obtain accumulated viewing time of the computer user; and triggering a warning means if the accumulated viewing time of the computer satisfies a predetermined condition.