Abstract: A circuit board pad resonance control system includes a board. A signal transmission line is included on the board. A plurality of connector pads are positioned on the board. A first connector pad receives the signal transmission line adjacent a first end of that connector pad. The first connector pad includes a mounting surface that mounts directly to a coupling element that is configured to couple a subsystem to the board, and reduces a resonance that is produced by an open portion of a signal transmission path that is created when the coupling element is directly mounted to the mounting surface of the first connector pad in a first orientation. In a specific example, the mounting surface may include a plurality of protrusions, a plated surface, and/or a mask that reduces the conductivity of the connector pad which reduces signal integrity issues due to resonance.

Abstract: A pumping device includes a barrel, a pump, and a control valve. The barrel has a gas hole. The pump includes a cylinder and a piston movable in the cylinder. The piston partitions the cylinder into a first space and a second space. Air in the first space is able to enter the second space via a one-way mechanism, but not in reverse. The control valve includes a main body and a control element. The main body has a first hole, a second hole, a ventilation hole, an inlet, and an outlet. The first hole and the second hole communicate the gas hole. The inlet communicates the first space, and the outlet communicates the second space. The control element is movable to make the inlet communicate the first hole or the ventilation hole and to make the outlet communicate the ventilation hole or the second hole.

Abstract: A storage structure for fluid pumping device adapted for disposing on a fluid pumping device comprises: a ring body, sleeved onto the fluid pumping device; a plurality of storage portions, arranged around the ring body, each of the storage portions being adapted for a workpiece to removably connected.

Abstract: A printed circuit board includes a circuit trace and a connector pad. The connector pad provides electrical and mechanical mounting of a connector lead of a surface mount device and provides a circuit path between the surface mount device and the circuit trace. The connector pad includes 1) a connector pad base electrically coupled to the circuit trace, and 2) a first connector pad island electrically isolated from the connector pad base. The connector pad base has a length that is substantially equal to a length of a contact portion of the connector lead.

Abstract: The present invention discloses an antenna tuning system and method thereof. The method comprises the following steps: choosing a parasitic antenna that combined with a main antenna, the strongest received signal strength indicator of a target station is detected; controlling the selected parasitic antenna that combined with a main antenna, to generate a scattering resonance through turning on or off a switch unit; and controlling a diffraction radiation pattern between the main antenna and the selected parasitic antenna through adjusting a load of a designed circuit.

Abstract: A circuit board pad mounting orientation system includes a board. A signal transmission line is included on the board. A plurality of connector pads are positioned on the board. At least one connector pad receives the signal transmission line adjacent a first end of that connector pad. At least one connector pad includes a second end that provides a reduction in a width of that connector pad to indicate a mounting orientation for coupling to the connector pad that receives the signal transmission line. In a specific example, a first connector pad receives the signal transmission line, includes the first end, and includes the second end that is opposite the first connector pad from the first end and that provides the reduction in the width of the first connector pad to indicate the mounting orientation for coupling to the first connector pad.

Abstract: In one or more embodiments, a circuit board may include a trace pair and a serpentine region of the trace pair, which may include: a first subregion in which the first trace includes a first portion that has a third width and a first length and in which the second trace includes a second portion, at least substantially parallel to the first portion, that has a fourth width, greater than the second width, and a second length; and a second subregion, adjacent to the first subregion, in which the first trace includes a third portion that has the third width and a third length and in which the second trace includes a third portion that has the fourth width and a third length, different from the second length.

Abstract: Ultrasonic wave sensing device includes a reading transistor, an ultrasonic wave transducer, and an input circuit. The reading transistor includes a first node, a second node, and a control node, wherein the first node receives a reference voltage, the second node couples with a reading node, and the control node couples with a first signal node. The ultrasonic wave transducer couples between the first signal node and a first input node, and receives a first control signal from the first input node. The input circuit couples between the first signal node and a second input node, and receives a second control signal from the second input node. The ultrasonic wave transducer generates an ultrasonic wave according to the first control signal and the second control signal, and outputs a sensing signal to the control node according to a reflected sound wave.

Abstract: A firing pin assembly of a nail gun and a bonding method thereof are provided. The firing pin assembly includes a firing pin body and a firing pin head made of a material having a hardness greater than that of the firing pin body. The firing pin head has a first end and a second end. The first end is made of a material having a density lower than that of the second end. The first end and the front end face of the firing pin body are preheated to a set temperature. The top of the second end is pressed toward the front end face of the firing pin body for an appropriate bonding time, so that the material particles of the firing pin body are dissociated and fused into the first end of the firing pin head to form the firing pin assembly.

Abstract: A battery health state evaluation method for evaluating a health state of a battery comprises a charging step, an idling step, a pulse discharging step, an evaluation index calculating step, and an evaluation result yielding step. The evaluation index calculating step retrieves a continuous voltage data and a continuous current data in a charging process, an idling process, and a pulse discharge process and calculates a plurality of evaluation indexed according to the continuous voltage data and continuous current data. The evaluation indexes are associated with the health state of the battery. The evaluation result yielding step evaluates the health state of the battery according to the indexes and yields an evaluation result. Therefore, the battery health state evaluation method is easy, convenient, and effective in performing a test quickly and accurately.

Abstract: A type of furniture with structural support, mainly includes: a first base and a second base connected to said first base, wherein the first base has a first frame having a first opening, a first connecting portion having an inner surface and an outer surface, and a plurality of first connectors, the first connecting portion and the first frame being separately configured and connected through the first connectors; the second base has second frame having a second opening, a second connecting portion, having an inner surface and an outer surface, the first and second connecting portions are connected through an assembly, and a plurality of second connecters, the second connecting portion and the second frame being separately configured and connected through the second connecters.

Abstract: A differential trace pair system includes a board having a first, a second, a third, and a fourth board structure member. A differential trace pair in the board includes a first differential trace extending between the first and the third board structure members, and a second differential trace extending between the second and the fourth board structure members. The differential trace pair includes a serpentine region that includes a first portion and a second portion where the first and the second differential traces have a first width, are substantially parallel, and spaced apart by a first differential trace pair spacing, and a third portion in which the second differential trace includes a second width that is greater than the first width, the first and second differential traces are substantially parallel and spaced apart by a second differential trace pair spacing that is greater than the first differential trace pair spacing.

Abstract: In one or more embodiments, a circuit board may include a trace pair and a serpentine region of the trace pair, which may include: a first subregion in which the first trace includes a first portion that has a third width and a first length and in which the second trace includes a second portion, at least substantially parallel to the first portion, that has a fourth width, greater than the second width, and a second length; and a second subregion, adjacent to the first subregion, in which the first trace includes a third portion that has the third width and a third length and in which the second trace includes a third portion that has the fourth width and a third length, different from the second length.

Abstract: A ratchet wrench includes a main body, a ratchet, two detents, two elastic members, and a switch knob. The strength of the material of the detents is greater than that of the material of the ratchet. During the process of operating the ratchet wrench, if the applied force is greater than the limit torsional force of the meshing portion between the teeth of the ratchet and the toothed portion of the detent to damage the teeth of the ratchet, the toothed portion of the detent will be instantly engaged with the intact teeth of the ratchet, located behind the damaged teeth, to be positioned again, thereby ensuring the safety of the operator.

Abstract: A blow-molding plastic bubble-generating device is provided, including a board-like shell body. The board-like shell body is formed through blowing a hollow embryo placed in a mold, the hollow embryo is blown and expanded, the hollow embryo is penetrated through by a plurality of needle posts on an inner wall of the mold to form the board-like shell body, the board-like shell body is integrally formed and hollow and has a shell wall which completely and continuously surrounds the board-like shell body, and the shell wall has a plurality of through holes.

Abstract: A housing for an electronic device in the home or car includes a substrate and a composite layer. The composite layer is formed on a surface of the substrate. The composite layer includes an adhesive layer, an ink layer, and a protective layer. The adhesive layer is fully attached to the surface of the substrate. The ink layer is formed on a surface of the adhesive layer away from the substrate. The protective layer is formed on a surface of the ink layer away from the adhesive layer and the process is completed by half-curing and full curing processes. A method for making the housing also is provided.

Abstract: A transfer film providing a textured finish to the surface of a glass object comprises a color ink layer, a texture layer attached to a surface of the ink layer, a metal layer attached to a surface of the texture layer opposite from and contacting the ink layer, and an adhesive layer attached to a surface of the metal layer opposite from and contacting the texture layer. A transfer sticker and a glass product using the transfer film are also provided.