Abstract: A transformer unit and a power converter circuit are provided. The transformer unit includes: a first secondary wiring layer including a first secondary winding; a second secondary wiring layer adjacent to the first secondary wiring layer and including a second secondary winding, a first end of the second secondary winding being connected to a first end of the first secondary winding via at least one first via hole; and a plurality of primary wiring layers including a primary winding, the first secondary wiring layer and the second secondary wiring layer being disposed between the plurality of primary wiring layers, wherein at least one of the first via hole is disposed within a projection of the primary winding in the plurality of primary wiring layers.

Abstract: A coupled-inductor module includes: a magnetic core including a first magnetic column, a second magnetic column, a third magnetic column extending in a first direction and two covers extending in a second direction, the first magnetic column disposed between the second magnetic column and the third magnetic column, the two covers respectively connected to the ends of the first magnetic column, the second magnetic column and the third magnetic column; and windings including a first winding and a second winding respectively wound around the first magnetic column, the first winding and the second winding being spaced apart from each other in the first direction. The magnetic core is provided with at least one air gap, and the windings and the air gap are not overlapped with each other.

Abstract: The present disclosure discloses a transmitter and a monitoring system using this transmitter, the transmitter includes: a multi-to-one multiplexing switch configured to receive a plurality of sensor signals of a plurality of channels through a plurality of input terminals, select one sensor signal from the plurality of sensor signals, and output the selected sensor signal through a output terminal; a first variable gain amplifier configured to receive the selected sensor signal, amplify the selected sensor signal with a gain within a first gain range, and output the amplified sensor signal; a control parameter input terminal configured to receive an input control parameter from outside of the transmitter; and an operating and switching selector configured to perform operations according to the input control parameter, so as to control the multi-to-one multiplexing switch to select the one sensor signal and control the gain of the first variable gain amplifier.

Abstract: A power circuit includes a power transistor sinking a power current according to a voltage of a driving node and a driving circuit which includes a first bootstrap circuit, a second bootstrap circuit receiving a second internal signal to generate a first internal signal, a pre-driver receiving a third internal signal to generate the second internal signal, and a hysteresis circuit receiving a control signal to generate the third internal signal with a hysteresis. The first bootstrap circuit includes a high-side transistor providing a supply voltage to the driving node according to a high-side voltage, a low-side transistor electrically connecting the driving node to the ground according to the first internal signal, and a charge pump generating the high-side voltage exceeding the supply voltage according to the first internal signal and the second internal signal.

Abstract: The invention provides a monitor circuit, which is used for a fan and receives a driving current and a driving voltage of the fan. The monitor circuit includes sensing circuits and a microcontroller. The sensing circuits respectively sense statuses of the fan and output sensing values. The microcontroller is used for monitoring whether the sensing values exceed preset value ranges respectively to obtain comparison results. The microcontroller outputs warning signals according to the comparison results. Each of the warning signals has a specific frequency.

Abstract: A power unit includes: a plurality of power converters, a first output terminal of one of two adjacent power converters among the plurality of power converters is connected successively to a second output terminal of the other one of the two adjacent power converters; a local controller configured to output a plurality of control signals; and a plurality of driving circuits configured to output driving signals according to the plurality of control signals, to drive the plurality of power semiconductor switches to be turned on and off, wherein the control signals corresponding to the power semiconductor switches in the same position of the plurality of power converters are the same, the power semiconductor switches in the same position of the plurality of power converters are simultaneously turned on and off.

Abstract: A method for monitoring capacitance of DC bus capacitor of a power electronic converter is provided, wherein the power electronic converter includes at least one AC/DC conversion circuit and the DC bus capacitor, a power input/output interface of the AC/DC conversion circuit including a first terminal and a second terminal. The first terminal is connected to an AC grid with a frequency of f, the second terminal is connected to the DC bus capacitor, f is any positive real number, and the method includes: measuring a pulsating power with a frequency of 2f flowing through the DC bus capacitor and a voltage on the DC bus capacitor; and calculating the capacitance of the DC bus capacitor based on the pulsating power and the voltage on the DC bus capacitor. An apparatus for monitoring the capacitance of the DC bus capacitor is provided correspondingly.

Abstract: A charging circuit interrupting device for applying an input voltage provided by first and second input power lines of a power system to first and second output power lines of an output system includes a current-detecting unit, a self-test device, and a controller. The current-detecting unit executes a leakage-detection function and generates a leakage signal when the current difference between the first and second power lines is detected. The self-test device generates a bypass path according to the detection enable signal so that there is a current difference between the first and the second input power lines. When operating in a self-test mode, the controller generates the detection enable signal, determines that the leakage-detecting function is normal, and enters a normal mode to apply the input voltage to the output system when the leakage signal is received.

Abstract: A color wheel rotation speed detecting module is disclosed and includes a color wheel, a motor, a rotation speed detector and a processor. The color wheel includes a first segment and at least one second segment. The motor drives the color wheel to rotate. The rotation speed detector includes an emitter and a receiver. The emitter outputs a light signal to the first segment or the second segment of the color wheel when the color wheel is rotated. When the receiver receives the light signal reflected from the second segment, the receiver outputs a detecting signal correspondingly. When the light signal passes through the first segment and the receiver fails to receive the light signal, the receiver interrupts the output of the detecting signal. The processor receives the detecting signal from the receiver, and obtains the rotating speed of the color wheel according to the detecting signal varied with time.

Abstract: The present disclosure provides a wrapping method for the common mode inductor. The common mode inductor includes a first coil winding and a second coil winding. The wrapping method for a common mode inductor includes steps of: disposing two isolation blocking sheets at different positions of a magnetic core; wrapping the first coil winding around the magnetic core, wherein the first coil winding is divided into two wrapping areas by one of the isolation blocking sheets; wrapping the second coil winding around the magnetic core, wherein the second coil winding is divided into two wrapping areas by the other one of the isolation blocking sheets, wherein the first coil winding and the second coil winding are symmetrically wrapped.

Abstract: The present disclosure provides a precharge device and a frequency converter. The precharge device is applied in a flying capacitor type multi-level converter circuit, and the multi-level converter circuit includes: a flying capacitor, a bus capacitor, a first and second semiconductor components, wherein the first semiconductor component is electrically connected between a first end of the flying capacitor and a first end of the bus capacitor, and the second semiconductor component is electrically connected between a second end of the flying capacitor and a second end of the bus capacitor; and the precharge device includes: an AC source; and an auxiliary circuit electrically connected with the AC source, wherein the auxiliary circuit reuses the first and second semiconductor components, and the AC source charges the flying capacitor and the bus capacitor through the auxiliary circuit.

Abstract: A light-providing device is provided, including a light guiding member, an LED (light-emitting diode), and a light distribution adjusting member, wherein the LED is disposed on the light guiding member. The light guiding member has an opening. The light distribution adjusting member has an inlet and an outlet. The inlet is connected to the opening. The shape or dimensions of the inlet is different from that of the outlet. A plurality of lights generated by the LED enter the light distribution adjusting member through the opening and the inlet, and leave the light distribution adjusting member through the outlet. The lights include a first light angular distribution at the inlet, and include a second light angular distribution at the outlet, wherein the second light angular distribution/the first light angular distribution is proportional to the inlet/the outlet.

Abstract: A control method, which is applied to a conversion circuit including at least one bridge arm and an inductor, the bridge arm including an upper semiconductor switch and a lower semiconductor switch connected in series, and one end of the inductor being connected to a midpoint of the bridge arm, includes: judging a direction of current of the inductor when a scram event occurs in the conversion circuit; turning on the upper semiconductor switch and turning off the lower semiconductor switch when the direction of current of the inductor is judged as a first direction, wherein the first direction is a forward conduction direction of the lower semiconductor switch; and turning off the upper semiconductor switch and turning on the lower semiconductor switch when the direction of current of the inductor is judged as a second direction.

Abstract: The present disclosure discloses an inductor and a converter having the same. The inductor includes a magnetic core and a winding, the winding is provided within a window of the magnetic core, the winding includes a main body part and a sampling part, the main body part and the sampling part are connected in series, and a length ratio of the sampling part to the main body part is less than 2; wherein the main body part is formed of a low resistivity conductive material, the sampling part is formed of a low temperature coefficient conductive material, and a current flowing through the inductor is sampled across two ends of the sampling part. The inductor can obtain a current detection signal with high accuracy and low temperature drift with a compact structure, without increasing detection loss.

Abstract: The present disclosure discloses an inductor and a converter having the same. The inductor includes a magnetic core and a winding, the winding is provided within a window of the magnetic core, the winding includes a main body part and a sampling part, the main body part and the sampling part are connected in series, and a length ratio of the sampling part to the main body part is less than 2; wherein the main body part is formed of a low resistivity conductive material, the sampling part is formed of a low temperature coefficient conductive material, and a current flowing through the inductor is sampled across two ends of the sampling part. The inductor can obtain a current detection signal with high accuracy and low temperature drift with a compact structure, without increasing detection loss.

Abstract: A mechanism-parametric-calibration method for a robotic arm system is provided. The method includes controlling the robotic arm to perform a plurality of actions so that one end of the robotic arm moves toward corresponding predictive positioning-points; determining a predictive relative-displacement between each two of the predictive positioning-points; after the robotic arm performs each of the actions, sensing three-dimensional positioning information of the end of the robotic arm; determining, according to the three-dimensional positioning information, a measured relative-displacement moved by the end of the robotic arm when the robotic arm performs each two of the actions; deriving an equation corresponding to the robotic arm from the predictive relative-displacements and the measured relative-displacements; and utilizing a feasible algorithm to find the solution of the equation.

Abstract: The present invention relates to a power module and a POL power module. The power module comprises an inductor and a main board; the inductor is disposed on the main board and includes an upper magnetic core, a PCB winding board, pins and a lower magnetic core; the PCB winding board is disposed between the upper magnetic core and the lower magnetic core; first ends of the pins are connected to the PCB winding board; and a second end, opposite to the first end, of at least one pin is extended and exceeds the bottom surface of the lower magnetic core, and is connected to the main board, so that a receiving space is formed between the bottom surface of the lower magnetic core and an upper surface of the main board. The power module of the application can provide at least two low-power independent outputs and can also provide high-power outputs in in-phase or interleaved parallel connection.

Abstract: A nebulizing device includes a medicament storage module, a nebulizing unit, and a first waterproof gasket. In the medicament storage module, a coupling part is connected with an outer surface of a tubular sidewall and aligned with an outlet of the tubular sidewall, and includes an extension wall and a first recess where the nebulizing unit is disposed. The first waterproof gasket is disposed within the first recess and located on a side of the nebulizing unit farther from the outlet. In the first waterproof gasket, a first opening is disposed adjacent to the nebulizing unit, a second opening is disposed opposite to the first opening and located on a side of the first opening farther from the nebulizing unit, the size of the second opening is greater than that of the first opening, and the annular wall structure is connected to the first opening and the second opening.

Abstract: A power drawing device using a single live wire includes a first and second mechanical switches, and a power drawing circuit, wherein the first mechanical switch includes a first contact connected to a live wire, a third contact connected to a first light adjusting circuit, and a fifth contact connected to the first light adjusting circuit; the second mechanical switch includes a first contact connected to the live wire, a third contact connected to a second light adjusting circuit, a fifth contact connected to the second light adjusting circuit, and a sixth contact connected to the first mechanical switch; and the power drawing circuit includes a first terminal connected to the live wire, a second terminal connected to the second mechanical switch, a third terminal connected to the first light adjusting circuit, and a fourth terminal connected to the second light adjusting circuit.

Abstract: The disclosure relates to a power conversion module, including: a substrate including a routing layer and an insulating layer, the routing layer including a first routing area and a second routing area; an electronic device provided on the first routing area and electrically connected to the first routing area and the second routing area, respectively; a vertical type power device provided on the second routing area and electrically connected to the second routing area; and a capacitor provided on the substrate, disposed between the electronic device and the vertical type power device, and electrically connected to the electronic device and the vertical type power device, respectively. The power conversion module is provided with all devices on the same substrate, thus cost is reduced, yield rate and reliability are improved, and parasitic inductance inside the power conversion module can be reduced.