Abstract: A package structure for a capacitive coupling isolator is provided. The package structure includes a first and a second leadframes, a transmitter, a receiver and a packaging body. The first leadframe includes a first and a second signal input pins and a first electrode plate, and the second leadframe includes a first and a second signal output pins and a second electrode plate. The first and second electrode plates are arranged one above another and aligned with each other for forming a plurality of capacitors. The transmitter is disposed on the first leadframe and the receiver is disposed on the second leadframe. The packaging body encloses the first and second leadframes and is filled therebetween for electrically isolating the first and second leadframes from each other.

Abstract: The instant disclosure provides a method for manufacturing a package structure of a folding magnetic coupling isolator. The method includes providing a leadframe structure including a frame body and a first and a second leadframes connected to the frame body, the first and second leadframes including first and second chip-mounting portions, first and second coil portions, and a plurality of first and second pins and floated pins; disposing the first and second chips on the first and second chip-mounting portions and establishing electrical connections between the first and second chips and the first and second pins; and rotating the first leadframe relative to the frame body and moving the first leadframe to a position above or under the second leadframe, thereby electrically isolating the first leadframe from the second leadframe. The first coil portion and the second coil portion are aligned with and magnetically coupled to each other.

Abstract: The instant disclosure includes a magnetic coupling package structure with duo leadframes for a magnetically coupled isolator and a method for manufacturing the same. The method includes a leadframe providing step, a chip connecting step and a coil alignment step. The leadframe providing step includes providing a first and a second leadframe each including a chip carrying portion, a coil portion, a plurality of pins and floating pins. The chip connecting step includes disposing at least a first chip and at least a second chip onto the corresponding chip carrying portions for electrically connecting the chips to the pins. The coil alignment step includes arranging the first leadframe above or beneath the second leadframe and applying a first and a second magnetic field to the first and the second leadframes respectively for aligning the coil portions, thereby controlling the coupling effect between two coil portions.

Abstract: A storage device is provided. The storage device includes a first connector, a second connector, and a memory circuit. The first connector is selectively electrically connected to a first electronic device. The second connector is selectively electrically connected to a second electronic device. The memory circuit is disposed between the first connector and the second connector. When the first connector is electrically connected to a first electronic device and the second connector is electrically connected to a second electronic device, the second connector is switched to a charge mode from a device mode, so that the first electronic device charges the second electronic device through the storage device, the second electronic device does not provide power to the storage device through the storage device, and the first electronic device accesses data in the storage device through the first connector.

Abstract: A miter saw includes a base, a worktable pivotally mounted to the base, a fence mounted at the worktable, an operating handle connected to the worktable, and two opposing supporting units respectively mounted to two opposite sides of the base. Each supporting unit includes a fixed panel and a movable panel pivoted to the fixed panel and biasable between an extended position where the operating handle is stoppable by the fixed panel upon operation to rotate the worktable and a first included angle is defined between a cutting slot and a fence of the worktable and a received position where the operating handle is stoppable by the movable panel upon operation to rotate the worktable and a second included angle larger than the first included angle is defined between the cutting slot and the fence of the worktable. Thus, the miter saw achieves the effect of increasing the miter angle.

Abstract: Disclosed is a differential transimpedance amplifier (TIA). In the differential TIA, an input end of the first source follower is coupled to the first output end of a first differential amplification circuit. The output end of the first source follower is coupled to the second input end of a second differential amplification circuit with feedback and a first feedback resistor. The input end of a second source follower is coupled to the second output end of the first differential amplification circuit. The output end of the second source follower is coupled to the first input end of the second differential amplification circuit with feedback and a second feedback resistor. A photo diode and a dummy diode are coupled respectively to two input ends of the first differential amplification circuit.

Abstract: A package structure for a capacitive coupling isolator is provided. The package structure includes a first and a second leadframes, a transmitter, a receiver and a packaging body. The first leadframe includes a first and a second signal input pins and a first electrode plate, and the second leadframe includes a first and a second signal output pins and a second electrode plate. The first and second electrode plates are arranged one above another and aligned with each other for forming a plurality of capacitors. The transmitter is disposed on the first leadframe and the receiver is disposed on the second leadframe. The packaging body encloses the first and second leadframes and is filled therebetween for electrically isolating the first and second leadframes from each other.

Abstract: A keyswitch capable of identifying keycap change includes a substrate, a keycap, a resilient component, an optical detection module and a processor. The keycap is disposed above the substrate and includes a reflective element. The optical detection module is disposed on the substrate and adapted to receive an optical signal reflected from the reflective element. The processor is disposed on the substrate and electrically connected to the optical detection module. The processor is adapted to analyze the optical signal for acquiring a type and a movement of the keycap. The keyswitch further includes a supporting component and a membrane. An end of the supporting component is connected to the keycap, and the other end of the supporting component is connected to the substrate. The membrane has light penetrating property and is disposed above the optical detection module.

Abstract: The instant disclosure includes a magnetic coupling package structure with duo leadframes for a magnetically coupled isolator and a method for manufacturing the same. The method includes a leadframe providing step, a chip connecting step and a coil alignment step. The leadframe providing step includes providing a first and a second leadframe each including a chip carrying portion, a coil portion, a plurality of pins and floating pins. The chip connecting step includes disposing at least a first chip and at least a second chip onto the corresponding chip carrying portions for electrically connecting the chips to the pins. The coil alignment step includes arranging the first leadframe above or beneath the second leadframe and applying a first and a second magnetic field to the first and the second leadframes respectively for aligning the coil portions, thereby controlling the coupling effect between two coil portions.

Abstract: A navigation device with distance detecting function can utilize a distance detecting mechanism to detect a distance relative to a working surface. The distance detecting mechanism includes a base, a connecting component, a feature unit and a detection unit. The connecting component partly protrudes from the base. The connecting component optionally contacts against or is spaced from the working surface to generate a distance variation relative to the base along an axial direction. The feature unit is disposed on the connecting component. The detection unit is connected to the base. The detection unit can detect parameter difference of the feature unit according to the distance variation of the connecting component relative to the base, so as to determine the distance between the working surface and a bottom of the base via the parameter difference.

Abstract: Disclosed is a differential transimpedance amplifier (TIA). In the differential TIA, an input end of the first source follower is coupled to the first output end of a first differential amplification circuit. The output end of the first source follower is coupled to the second input end of a second differential amplification circuit with feedback and a first feedback resistor. The input end of a second source follower is coupled to the second output end of the first differential amplification circuit. The output end of the second source follower is coupled to the first input end of the second differential amplification circuit with feedback and a second feedback resistor. A photo diode and a dummy diode are coupled respectively to two input ends of the first differential amplification circuit.

Abstract: An accommodation structure includes a frame, a first connector disposed on a first side of the frame, and a second connector disposed on a second side of the frame. When the first storage device is connected to the first connector, the first storage device occupies a first portion of the accommodation space. When the second storage device is connected to the second connector, the second storage device occupies a second portion of the accommodation space. In addition, the first portion at least partially overlaps the second portion.

Abstract: This present invention discloses an optical mouse and a parameter calibration method thereof. The optical mouse includes: a light source, an image capturing unit, a memory unit and a processing unit, and the parameter calibration method of the optical mouse includes: capturing images formed by the reflective light projected from the mouse pad when the optical mouse is placed upon the mouse pad and has a relative displacement between the mouse pad, and then producing image frames according to the images; determining if any pattern information is found in the image frames; further, setting parameters of the optical mouse when at least one of the pattern information is found in the frames, in which, the pattern information is composed of a pattern of the mouse pad.

Abstract: The present disclosure provides a portable electronic device and an optical proximity sensor module thereof. The optical proximity sensor module includes a circuit substrate, a light-emitting element, an optical proximity sensor element, a light-transmitting package structure and a light-shielding structure. The light-emitting element and the optical proximity sensor element are disposed on the circuit substrate. The light-transmitting package structure includes a first package body disposed on the circuit substrate to enclose the light-emitting element and a second package body disposed on the circuit substrate to enclose the optical proximity sensor element. The light-shielding structure is disposed on the light-transmitting package structure to enclose one part of the first package body and one part of the second package body.

Abstract: A keyboard has a keyswitch capable of showing its movement depth. The keyswitch includes a substrate, a lifting unit, a multistage positioning component and a keycap. The lifting unit is disposed on the substrate. The multistage positioning component is disposed on the substrate and has a plurality of first actuating portions. The keycap is connected with the lifting unit and adjacent by the multistage positioning component. The keycap has a second actuating portion. The keycap is moved relative to the substrate via the lifting unit, and the second actuating portion can contact against one of the plurality of first actuating portions to generate a feedback signal.

Abstract: Apparatus and associated methods relate to a micro-electro-mechanical system (MEMS) based gas sensor including an electrolyte contacting one or more top electrode(s) arranged on the bottom surface of a top semiconductor substrate (TSS), and one or more bottom electrode(s) arranged on the top of a bottom semiconductor substrate (BSS), the TSS and BSS joined with an adhesive seal around the electrolyte, the sensor including one or more capillaries providing gaseous communication to the electrolyte from an external ambient environment. The electrodes may be electrically accessed by one or more vias to externally accessible bond pads. In some examples, an electrical connection may be made from an additional bond pad on top of the TSS to the electrolyte. Various embodiments may reduce the size of various gas sensors to advantageously allow their inclusion into portable electronic devices.

Abstract: Embodiments relate generally to systems, devices, and methods for depositing an electrode and an electrolyte on a microelectromechanical system (MEMS) electrochemical sensor. A method may comprise providing a blade on a surface of a substrate; providing a ridge along the perimeter of the substrate; pressing the electrode and the electrolyte onto the blade and the ridge; cutting the electrode into multiple electrodes; positioning the electrolyte to contact the surface, the blade, and the ridge; and positioning the multiple electrodes to contact the surface, the blade, and the ridge.

Abstract: The instant disclosure provides a method for manufacturing a package structure of a folding magnetic coupling isolator. The method includes providing a leadframe structure including a frame body and a first and a second leadframes connected to the frame body, the first and second leadframes including first and second chip-mounting portions, first and second coil portions, and a plurality of first and second pins and floated pins; disposing the first and second chips on the first and second chip-mounting portions and establishing electrical connections between the first and second chips and the first and second pins; and rotating the first leadframe relative to the frame body and moving the first leadframe to a position above or under the second leadframe, thereby electrically isolating the first leadframe from the second leadframe. The first coil portion and the second coil portion are aligned with and magnetically coupled to each other.

Abstract: A buffer circuit receives a working supply voltage which may vary within a voltage range. The buffer circuit has a high voltage constant current buffer circuit, and in this circuit, the source of the first NMOS transistor is grounded, and drains of the first NMOS transistor and the first PMOS transistor are connected. The source of the second PMOS transistor is connected to the supply voltage input of the buffer circuit, and the drain of the second PMOS transistor is connected to the source of the first PMOS transistor. The input end of the high voltage diode connected composite transistors is connected to the supply voltage input of the buffer circuit, and the output end of the diode connected transistors is connected to the gates of first and second PMOS transistors. The first PMOS and NMOS transistors are high-voltage transistors. The second PMOS transistor is a low-voltage transistor.

Abstract: The present invention relates to a stair exercise device for simulating stair climbing, the device having a plurality of steps which are activated by the weight of a person walking up them. A stationary platform at the base of the stair exercise device sends a signal to a controller to bring the exercise device to a controlled stop when an operator steps onto the platform. The steps of the exercise device stop in a predetermined location when the exercise device comes to a controlled stop, ensuring proper step location to allow the operator to easily enter and exit the exercise device. Steps have a step platform of a different color than the risers between steps to aid in foot placement.