Abstract: A card edge connector (100) for receiving a module (200) includes an elongated insulative housing (1) having a pair of elongated side walls, a central slot (11) extending therebetween for insertion of the module, and a receiving slot (14) formed on one of the side walls and communicating with the central slot. A group of terminals (2) are positioned in the side walls and extend into the central slot thereof. A latch (3) is rotatably received in the receiving slot for locking the module in the insulative housing at a first position and for ejecting the module out of the insulative housing at a second position. The latch has a main body (30) and a stopping device (31) projecting from the main body to engage with an upper surface (17) of the insulative housing when the latch is at the first and second position, thereby preventing the latch from over-rotating beyond the first and second positions.

Abstract: The present invention relates to an output stage circuit and an operational amplifier thereof. In the output stage circuit, one of a gate of a transistor is coupled to a gate of a bias transistor and a level shifter in response to a small signal outputted from an amplifying circuit in the operational amplifier. In addition, a gate voltage of the bias transistor is controlled by a voltage generating circuit to control a DC bias of the transistor of the output stage circuit. Therefore, there is no need extra frequency compensating component for compensating the transistor of the output stage circuit, and to save circuit layout area and cost can be achieved by the present invention.

Abstract: A non-backboard reflector mirror includes a mirror body with a rim, a locating bar affixed to the back side of the rim of the mirror body, a locating frame, which has a clamping portion coupled to the locating bar and movable along and rotatable relative to the locating bar and affixed thereto at the desired elevation and angle, and a mounting frame selectively fastened to an array of mounting through holes at the locating frame at the desired angle for installation in a ceiling, overhead wall, or vertical wall, short wall. An alternate mounting frame may be used for installation in a post so that the non-backboard reflector mirror is used as a traffic mirror.

Abstract: A connector (100) includes an insulative housing (1) having a pair of side walls (10) with a central slot (11) formed therebetween, a set of terminals (5) including first terminals (51) and second terminals (52) and a spacer (3). Each side wall has a set of passageways (12). Each first terminal has a first contacting portion (511) protruding into the central slot, a first tail portion (513) mounted on a PCB, and a first connecting portion (512). The first connecting portions and the first tail portions are arranged in two rows. Each second terminal has a second contacting portion (521) protruding into the central slot, a second tail portion (523) mounted on the PCB, and a second connecting portion (522). The second connecting portions and the second tail portions are arranged in another two rows. The spacer (3) has a set of first protrusions (31) and forms a plurality of first grooves (32) located between each two adjacent first protrusions. The first protrusions each has a second groove (33) formed thereon.

Abstract: The present invention relates to an output stage circuit and an operational amplifier thereof. In the output stage circuit, one of a gate of a transistor is coupled to a gate of a bias transistor and a level shifter in response to a small signal outputted from an amplifying circuit in the operational amplifier. In addition, a gate voltage of the bias transistor is controlled by a voltage generating circuit to control a DC bias of the transistor of the output stage circuit. Therefore, extra frequency compensating components for compensating the transistor of the output stage circuit is no longer necessary, and saving circuit layout area and cost can be achieved by the present invention.

Abstract: A card edge connector (100) includes an elongate insulative housing (1), a plurality of signal contacts (3) and a pair of power contacts (4) retained in the insulative housing (1). The insulative housing (1) defines a pair of opposed side walls (11) and a central slot (13) between the side walls (11). Each side wall (11) defines a plurality of passageways (110) communicating with the central slot (13). Each signal contact (3) has an engaging portion (32) exposed to the central slot (13.) Each power contact (4) has a securing portion (41) retained in the insulative housing (1), a plurality of contact portions (42) extending upwardly and sidewardly into the central slot (13) from the securing portion (41) and arranged in a row along a length direction of the insulative housing (1), and at least one tail portion (43) extending downwardly from another end of the securing portion (41).

Abstract: A catalyst composition and a method for hydrogenating a polymer having a conjugated diene are provided. The catalyst composition includes (a) a first composition having one of a bis(cyclopendienyl, fluorenyl, indenyl and derivatives thereof) titanium compound and a mixture thereof; (b) a second composition having one selected from the group consisting of a first compound of a formula (II), a second compound of a formula (III) and a mixture thereof: wherein the formula (II) has a chain structure, the formula (III) has a cyclic structure, the R is C1˜C12 alkyl, the X1 and X2 are ones selected from the group consisting of C1˜C12 alkyl, C1˜C12 cycloalkoxy, aryl, C1˜C12 alkyl aryl and carbonyl, and n>1 and m>2; and (c) a third composition having an organic metallic compound.

Abstract: A card edge connector (100) for receiving a module (200), includes an insulative housing (1) having a receiving slot (12) for receiving the module and a pair of arm portions (10) located at opposite ends thereof. Each arm portion has a pair of side walls (15) and a resilient arm (16) with a retaining embossment (162) for locking the module. The side walls are integrally formed on the insulative housing and include a projection (157). A number of terminals (2) are mounted on said insulative housing and extend into the receiving slot thereof. A pair of latches (3) are attached to the arm portions and move with the resilient arms. Each latch includes a base (31) and a stopping plate (37) extending from the base. The stopping plates engage with said projections of the side walls thereby open said resilient arms when the module detaches from the card edge connector.

Abstract: A card edge connector (100) includes an elongate insulative housing (1), a plurality of signal contacts (3) and a pair of power contacts (4) retained in the insulative housing (1). The insulative housing (1) defines a pair of opposed side walls (11) and a central slot (13) between the side walls (11). Each side wall (11) defines a plurality of passageways (110) communicating with the central slot (13). Each signal contact (3) has an engaging portion (32) exposed to the central slot (13.) Each power contact (4) has a securing portion (41) retained in the insulative housing (1), a plurality of contact portions (42) extending upwardly and sidewardly into the central slot (13) from the securing portion (41) and arranged in a row along a length direction of the insulative housing (1), and at least one tail portion (43) extending downwardly from another end of the securing portion (41).

Abstract: A filter applied in a sigma-delta modulator includes an integrator, a signal attenuator and a feedback circuit, in which these components are connected in series sequentially to form a local feedback circuit. The integrator integrates an input signal to output an integral signal. Accordingly, the signal attenuator attenuates the integral signal to output an attenuation signal to the local feedback circuit so as to share a part of attenuation amount to reduce the chip area of the sigma-delta modulator.

Abstract: A card edge connector (100) for receiving a memory card (200) includes an insulative housing (1) and a number of terminals (2) retained therein. The insulative housing (1) includes an elongated base (10) extending along a longitudinal direction thereof and a pair of tower section (18) extending upwardly from opposite ends of the base (10). The base (10) defines a receiving slot (10) for receiving the memory card (200) and two rows of contact receiving channels (111) communicated with the slot (10). Each tower section (18) includes a pair of opposed arms (13) and a cavity (15) located therebetween. The arm (13) has a cantilever type resilient finger (132) formed from an inner wall of the arm (13) and extending downwardly for sandwiching the memory card (200), and a locking projection (131) at an upper portion thereof to engage with a notch (203) of the memory card (200).

Abstract: A method of measuring dimensions for an optical system to measure the critical dimension of a sample object according to this aspect of the present invention includes the steps of preparing a plurality of standard objects, selecting a predetermined focus metric algorithm, performing an analyzing process on each standard object to generate a plurality of focus metric distributions using the predetermined focus metric algorithm, analyzing the focus metric distributions to determine a target order, generating a reference relation, acquiring a measured characteristic value from the sample object, and determining the critical dimension of the sample object based on the measured characteristic value and the reference relation. Each standard object has a grating-shaped standard pattern with a predetermined pitch and line width. The focus metric algorithm is a gradient energy method, a Laplacian method, a standard deviation method, or a contrast method.

Abstract: A card edge connector (100) for receiving a module (3) includes an elongated insulative housing (1) having a central slot (10) for receiving a bottom edge of the module and an arm portion (16) coupled to an end of the insulative housing. The arm portion includes a pair of side walls (160) with a retaining slot (168) formed therebetween for receiving a side edge of the module and a latch (17) located between the side walls and integrally extending upwardly from the insulative housing. The latch has a resilient arm (171) defining a retaining embossment (173) for latching the module and a gripping portion (172) for rotating the resilient arm. A number of terminals (2) are mounted on the insulative housing and extend into the central slot for electrical connection to the module.

Abstract: A card edge connector (100) for receiving a module (200) includes an elongated insulative housing (1) having a receiving slot (19) for receiving the module and at least one arm portion (10) positioned at one end of the insulative housing. The arm portion (10) has a pair of side walls (11) and a recess (12) located therebetween. Each side wall has a stopper (14) extending in the recess. A sets of terminals (2) are mounted on said insulative housing and extend into the receiving slot thereof. A latch (3) is adapted to be rotatably received in the recess (12). The latch includes an ejecting portion (33) for ejecting the module out of the receiving slot, a locking portion (34) for locking the module into the receiving slot and a pair of projections (31) formed on opposite sides thereof for cooperating with the stoppers (14). The projection (31) has a side surface (312) coated with a lubricant film (315) thereon for interfering engagement with the stopper (14) when the latch is rotated inwardly.

Abstract: The present invention relates to an output stage circuit and an operational amplifier thereof. In the output stage circuit, one of a gate of a transistor is coupled to a gate of a bias transistor and a level shifter in response to a small signal outputted from an amplifying circuit in the operational amplifier. In addition, a gate voltage of the bias transistor is controlled by a voltage generating circuit to control a DC bias of the transistor of the output stage circuit. Therefore, there is no need extra frequency compensating component for compensating the transistor of the output stage circuit, and to save circuit layout area and cost can be achieved by the present invention.

Abstract: The present invention relates to an output stage circuit and an operational amplifier thereof. In the output stage circuit, one of a gate of a transistor is coupled to a gate of a bias transistor and a level shifter in response to a small signal outputted from an amplifying circuit in the operational amplifier. In addition, a gate voltage of the bias transistor is controlled by a voltage generating circuit to control a DC bias of the transistor of the output stage circuit. Therefore, extra frequency compensating components for compensating the transistor of the output stage circuit is no longer necessary, and saving circuit layout area and cost can be achieved by the present invention.

Abstract: A data weighted average circuit is disclosed which includes a lookup unit and a storage unit. The invention uses a lookup table to speed up the circuit operation. Besides, the operation delay is not affected by various orders of the data weighted average circuit and various bit-widths of input data.

Abstract: An amplifier includes: an input stage for receiving an input signal to generate a first signal corresponding to a first band; a first modulator coupled to the input stage for modulating the first signal to generate a second signal corresponding to a second band; an amplifier stage coupled to the first modulator for processing the second signal to generate a third signal, wherein the third signal includes a fourth signal corresponding to the second band and a first interference signal corresponding to the first band; and a second modulator coupled to the amplifier stage for modulating the third signal to generate a fifth signal corresponding to the first band and to generate a second interference signal corresponding to the second band.

Abstract: A card edge connector (100) for receiving a module (200) includes an elongated insulative housing (1) having a pair of elongated side walls, a central slot (11) extending therebetween for insertion of the module, and a receiving slot (14) formed on one of the side walls and communicating with the central slot. A group of terminals (2) are positioned in the side walls and extend into the central slot thereof. A latch (3) is rotatably received in the receiving slot for locking the module in the insulative housing at a first position and for ejecting the module out of the insulative housing at a second position. The latch has a main body (30) and a stopping device (31) projecting from the main body to engage with an upper surface (17) of the insulative housing when the latch is at the first and second position, thereby preventing the latch from over-rotating beyond the first and second positions.

Abstract: A card edge connector (100) includes an insulative housing (1) having a pair of side walls (16) with a central slot (12) formed therebetween and a number of upper cavities (13) and lower cavities (14), the central slot defining a central line (125) along a middle portion thereof, the upper cavities and the lower cavities being located on opposite sides of the central line; a number of contacts each including a contacting portion (211, 221, 231, 241) extending into the central slot, a soldering portion (213, 223, 233, 243) extending out of the housing and a fixing portion (212, 222, 232, 242) interconnecting the contacting portion and the soldering portion, said contacts having upper contacts and lower contacts received in the upper cavities and the lower cavities respectively, the lower contacts comprising a first row contacts (21) and a second row contacts (22), the fixing portions (212) of the first row contacts and the fixing portions (222) of the second row contacts being located on opposite sides of the