Abstract: A fixing structure for computer mainboard is provided. The mainboard is clamped between a guard board and a back board. Through the appropriate arrangement of a snap pillar of the guard board and a gourd-shaped hole of the back board, after the snap pillar penetrates the mainboard and the gourd-shaped hole, the mainboard, the guard board and the back board are snapped by moving the back board properly. Furthermore, in the snap state, a fixing pillar penetrates the mainboard and the back board, so as to fasten the two boards. Thus, the step of locking by screws in the conventional art is simplified, and the assembly or disassembly can be fulfilled without any assembling/disassembling tools.

Abstract: A fixing structure for computer mainboard is provided. The mainboard is clamped between a guard board and a back board. Through the appropriate arrangement of a snap pillar of the guard board and a gourd-shaped hole of the back board, after the snap pillar penetrates the mainboard and the gourd-shaped hole, the mainboard, the guard board and the back board are snapped by moving the back board properly. Furthermore, in the snap state, a fixing pillar penetrates the mainboard and the back board, so as to fasten the two boards. Thus, the step of locking by screws in the conventional art is simplified, and the assembly or disassembly can be fulfilled without any assembling/disassembling tools.

Abstract: An engaging device of a circuit board is disclosed. The engaging device is for engaging a circuit board having a positioning hole to a housing of an electronic device. The engaging device includes a conductive hook fixed to the housing, the conductive hook including a hook portion for being hooked to the positioning hole, and a contacting end formed on an end of the hook portion; and a conductive slice fixed to a side of the circuit board, corresponding to the positioning hole for contacting with the contacting end when the hook portion is hooked to the positioning hole, so as to allow static electricity generated by the circuit board to be conducted to the housing, and improve engaging strength of the conductive hook and the housing.

Abstract: A calibration device for calibrating an ADC comprising: an error estimator for estimating an error of a digital signal outputted from the ADC, the error estimator includes: a digital filter for filtering the digital signal to generate a filtered signal; and a least-mean-square module for performing a least-mean-square operation according to the filtered signal to generate an estimated error; and an error correction module for correcting the digital signal according to the estimated error.

Abstract: A phase selector is disclosed. The phase selector is utilized for outputting an output clock to a flip-flop according to an input data signal latched by the flip-flop. The phase selector includes: a clock phase adjustor, for adjusting the delay of an input clock to generate a first clock and a second clock, wherein the clock phases of the first clock and the second clock are different; a phase detector, for detecting phase relation between the input data signal and the first clock to generate a detecting signal; a decision circuit, coupled to the phase detector, for generating a selecting signal according to the detecting signal; and a selection circuit, coupled to the decision circuit, for selecting the input clock or the second clock to generate the output clock to the flip-flop according to the selecting signal.

Abstract: An engaging device of a circuit board is disclosed. The engaging device is for engaging a circuit board having a positioning hole to a housing of an electronic device. The engaging device includes a conductive hook fixed to the housing, the conductive hook including a hook portion for being hooked to the positioning hole, and a contacting end formed on an end of the hook portion; and a conductive slice fixed to a side of the circuit board, corresponding to the positioning hole for contacting with the contacting end when the hook portion is hooked to the positioning hole, so as to allow static electricity generated by the circuit board to be conducted to the housing, and improve engaging strength of the conductive hook and the housing.

Abstract: A fixing structure without any fixing member is disclosed. The fixing structure is able to be installed in a housing of an electronic device for fixture of a driver. The fixing structure includes at least a supporting member fixed to the housing of the electronic device, and an elastic member connected to the driver. The driver is able to be fixed to the fixing structure through a fixing action achieved by the supporting member and the elastic member.

Abstract: A bandgap voltage generating circuit includes a circuit coupled to a first node and a second node, driving the first and the second nodes to the same voltage level. A first impedance element is coupled to the first node and a second impedance element is coupled to the second node, wherein the impedance of the second impedance element is larger than the impedance of the first impedance element. A first transistor is coupled to the first impedance element, and a second transistor is coupled to the second impedance element and the first transistor. The bandgap generating circuit generates a bandgap voltage at the second node.

Abstract: A fixing structure of battery module for fixing a battery module in an electronic device is proposed. The fixing structure includes a first lid and a second lid, which are formed on a surface of the electronic device, wherein the first lid is formed with a first fastening part, and the second lid is formed with a second fastening part for being engaged with the first fastening part; a mounting cavity formed in the electronic device at a position corresponding to the second lid; a first locking part formed on the second lid; and a second locking part formed on the battery module, for being coupled to the first locking part so as to fasten the battery module to the second lid. When the first and second lids are coupled together by the first and second fastening parts, the battery module fastened to the second lid is received in the mounting cavity and fixed in the electronic device.

Abstract: A fixing structure for a battery module having a first coupling portion and a second coupling portion, includes a base and a rotating member pivotally mounted to the base. The base has a first fixing portion and a second fixing portion. The first fixing portion includes a first end for being coupled to the first coupling portion, and a second end communicating with the first end thereof and for fixing the first coupling portion. The second fixing portion includes a first end for being coupled to the second coupling portion, and a second end communicating with the first end thereof and for fixing the second coupling portion. The rotating member includes a third fixing portion for being fixed to the first end of the first fixing portion, and a poking portion for allowing the third fixing portion to be separated from the first end of the first fixing portion.

Abstract: A voltage buffer circuit is disclosed for receiving an input voltage and generating an output voltage. The voltage buffer circuit includes a voltage buffer stage and a voltage output stage. The voltage buffer stage buffers the input voltage and generates a first voltage. The voltage buffer stage includes a first circuit. The voltage output stage is coupled to the voltage buffer stage for receiving the first voltage and generating the output voltage. The circuit structure of the voltage output stage corresponds to the circuit structure of the first circuit.

Abstract: A battery module fixture applicable to a battery module having a first positioning portion is disclosed. The battery module fixture includes a base and a spring member. The base includes a second positioning portion having a first end for engaging with the first positioning portion, and a second end connected to the first end capable of being fixed to the first positioning portion. The spring member is capable of being fixed to the base, and includes a third positioning portion corresponding to the first end of the second positioning portion of the base, and a actuating portion for moving along with the third positioning portion, so as to break the third positioning portion away from the first end.

Abstract: This invention discloses a lock mechanism. The lock mechanism comprises a tray, a locking element, a solenoid, a linked apparatus, a first arm and a boss. The locking element has a protrusion and is rotably fixed on the tray. The solenoid is fixed on the tray and supplies a magnetic force to an active block. The linked apparatus is connected with the active block of the solenoid and is rotably fixed on the tray to push the locking element. The first arm is rotably fixed on the tray to push the linked apparatus and has a protruding rib to push against the protrusion of the locking element. The boss cooperates with the locking element when the tray is loaded. According to this mechanism, the sounds resulted from the locking element and the first arm are happened at the same time.

Abstract: A heat sink has a substrate with first pivoting portions thereon. A heat scattering member has a plurality of fins on a top thereof, a protrusion on a periphery thereof and a pressing portion between the protrusion and the distal fin. A clip member has connection portions, second pivoting portions and a lock portion. The second pivoting portions are projected from ends of the connection portions to be pivotally connected to the first pivoting portions of the substrate. The clip member is moved between a fist position and a second position. The lock portions are projected from the other ends of the connection portions to be engaged with the pressing portions while the lock portion is moved to the second position.

Abstract: An optical disk drive includes a main body and a tray. A tray locking mechanism includes a base fixed to the tray, a locking device installed on the base for combining with or separating from a stop pin of the main body, a transmission device installed on the base for driving the locking device, and a control device installed on the base for stopping the transmission device. When the locking device combines with the stop pin of the main body, the tray can be locked to the main body, and when the transmission device drives the locking device to be separated from the stop pin of the main body, the tray can eject from the main body and the control device can stop the transmission device from rotating.

Abstract: An electrical connector fixation device having at least a connector housing and a fastening piece is proposed. The connector housing has at least a receiving portion for accommodating the electrical connector and a compressing board portion to deform the receiving portion by compression. The fastening piece is used to hold the compressing board portion and to fix the connector housing on a body of electrical device. With such design, an electrical connector is assembled in the body of electric device, so that the body of electric device is expanded with device interconnection function.

Abstract: A disc braking device is utilized in an optical disc drive. The disc braking device is installed on a disc tray of an optical disc drive. Without being affected by an covering component or the location of the disc braking device, the disc braking device makes a disc stop rotating in a more direct and efficient way. The disc braking device contains a structure portion; a braking rod installed and not fixed on the structure portion; and a braking component installed on the braking rod and utilized for making the disc stop rotating.

Abstract: A modularized circuit board mounting architecture is proposed, which is designed for use to mount a modularized circuit board onto the inside of an enclosure, such as a server's chassis or a desktop computer's casing. The proposed mounting architecture is more advantageous to use that prior art in that the mounting and dismounting of the modularized circuit board to and from the enclosure can be both carried out effortlessly simply by hand without requiring technical personnel or user to use any assisting tools, such as screw drivers. This feature allows computer manufacturers to assembly computer units more quickly and efficiently and thereby significantly reduce labor hours. Moreover, it also allows after-sale maintenance or upgrade to be carried out more quickly and efficiently.

Abstract: A modularized electronic device operating status display architecture is proposed, which is designed for use with a modularized electronic device mounted on the inside of a chassis of an electronic system, and which is capable of detecting whether the modularized electronic device operates normally during operation to thereby display its operating status as light signals on the outside of the chassis to allow assembly personnel or user to learn the operating status by visually checking the externally-displayed light signals. The proposed modularized electronic device operating status display architecture is more advantageous to use in that it allows the assembly to be less complex in structure and more increased in productivity. Furthermore, it allows no removal and reconnection of electrical wires during the replacement of a faulted modularized device. This feature allows both assembly and maintenance of the modularized fan unit to be more convenient and efficient than prior art.

Abstract: A heat sink has a substrate with first pivoting portions thereon. A heat scattering member has a plurality of fins on a top thereof, a protrusion on a periphery thereof and a pressing portion between the protrusion and the distal fin. A clip member has connection portions, second pivoting portions and a lock portion. The second pivoting portions are projected from ends of the connection portions to be pivotally connected to the first pivoting portions of the substrate. The clip member is moved between a fist position and a second position. The lock portions are projected from the other ends of the connection portions to be engaged with the pressing portions while the lock portion is moved to the second position.