16 results about "Pulse transformer" patented technology

This invention discloses a multi-port series circuit breaker with a shared injection unit and its control method. The circuit breaker includes a shared voltage injection unit, a fault selection unit, an integrated coupling inductor unit, and a multi-port main current-carrying branch. Multiple DC lines share a single voltage injection unit through the fault selection unit. The voltage injection unit injects reverse voltage into the faulty line through a pulse transformer to achieve active limitation and interruption of the fault current. This invention transforms passive commutation into series active current-limiting interruption. By sharing an active injection unit across multiple ports, the number of fully controlled switching transistors is reduced, resulting in fast interruption speed, low current loss, and low cost.

This utility model belongs to the field of electronic engineering measurement technology, specifically a test fixture for a small-power pulse transformer, including a transformer body; a connecting disc rotatably connected to the bottom inner side of the transformer body; a first gear rotatably connected to the top inner side of the transformer body; and a transmission gear ring rotatably connected to the top inner side of the transformer body; the transmission gear ring meshes with the first gear; and multiple sets of fan blades are arranged inside the transmission gear ring; during operation, the first gear is activated, causing it to rotate in the opposite direction. The first gear can interact with the elastic connecting plate through its teeth, thereby driving the connecting disc to rotate. The connecting disc can then be wound up with the fixture connecting wire fixed on its surface, thus reducing the risk of the existing fixture connecting wire being exposed to the outside for extended periods, leading to folding or damage. The overall device improves the working life of the fixture connecting wire and enhances the overall measurement efficiency.

This invention discloses a composite voltage waveform generator, comprising a DC generation module, a ripple generation module, a compensation module, and a control module. The DC generation module is a controllable DC voltage source connected to a capacitor voltage doubler rectifier circuit to generate a DC voltage waveform. The controllable DC voltage source includes a BUCK circuit, a BOOST circuit, a forward circuit, or a flyback circuit. The ripple generation module includes a D / A converter, a power amplifier, and a pulse transformer connected together, used to read a data sequence of length N and generate a voltage waveform fitted from N data points. The test voltage waveform generated by this invention is closer to the actual voltage condition waveform of insulating materials used in DC systems, making it more suitable for reliability testing of insulating materials used in DC systems. Furthermore, it allows for adjustment of the commutation overshoot voltage waveform based on theoretical operating conditions.

In an example embodiment, a method comprising identifying, by a primary-side controlled Universal Serial Bus Power Delivery (USB-PD) alternating current to direct current (AC-DC) converter, a first pulse, wherein the first pulse is received from a pulse transformer. The method further includes determining that a threshold duration of time is satisfied. In response to determining that the threshold duration of time is satisfied, the method includes identifying a second pulse, wherein the second pulse is received from the pulse transformer. The first pulse and the second pulse are used for control of a high-side field effect transistor (FET) and a low-side FET, where the high-side FET is coupled to an active clamp flyback (ACF) circuit and the low-side FET is coupled to a flyback transformer of the USB-PD AC-DC converter. In response to identifying the second pulse, the method further includes controlling operation of the high-side FET or the low-side FET.

This utility model discloses a 12-pulse photovoltaic encapsulated high-frequency reactor, comprising a housing, several 12-pulse transformers, a cover plate, and several conductor bars. The housing has an installation chamber, and the several 12-pulse transformers are spaced apart within the installation chamber. Each 12-pulse transformer includes a magnetic core and foil windings wound on two opposing iron pillars of the magnetic core. The cover plate covers the several 12-pulse transformers, and the conductor bars are connected to the cover plate and correspond to the foil windings of the several 12-pulse transformers. The structural layout and design of this utility model can reduce the overall size and losses of the reactor, and has the following characteristics: high heat dissipation, high mechanical strength, moisture and corrosion resistance, partial discharge control, low high-frequency loss, good current sharing characteristics, low parasitic capacitance, and high power density.

This utility model relates to the field of pulse transformer technology and discloses a novel high-power high-voltage pulse transformer, including a main support frame. An insulated winding mechanism is located at the center of the main support frame. The main support frame includes a support shell, with external insulating tape attached to the four perimeter of the support shell. Bases are fixed to both ends of the bottom surface of the support shell, and pins are engaged at the bottom ends of the bases. This utility model allows for welding to a circuit structure via pins distributed at both ends of the support shell. It can also be used with mounting posts at both ends and a bottom rubber suction cup for adsorption to the installation environment. The elastic pressure of a spring fixed to the bottom of a pull button causes the pull rod connected to the bottom of the pull button to continuously extend and retract upwards, driving a piston to form an adsorption force. This, combined with the rubber suction cup connected to the bottom of the adsorption chamber, allows for stable adsorption to the installation environment, completing the auxiliary support after welding, reinforcing the surrounding structure, and maintaining the overall stability of the transformer.

An electronic component includes a wire and a terminal electrode connected to a lead of the wire and at least partly covered with a deposited film. The deposited film of the terminal electrode connected to the lead includes a surface having a glossy surface with fewer surface irregularities than those of a non-glossy surface remaining as-is as of formation of the deposited film. The glossy surface is located near the lead connected to the terminal electrode.

This invention provides a thyristor-controlled surge arrester and its control method. By constructing a dual-channel voltage processing algorithm based on morphological filtering and adaptive Kalman filtering, it achieves rapid and reliable judgment of power frequency overvoltage. The controllable surge arrester provided by this invention is installed at the phase-to-phase position of the protected transmission line and includes a nonlinear voltage limiting branch, a main protection circuit, an energy extraction and voltage division module, and a control and detection module. The nonlinear voltage limiting branch includes a first varistor and a first parallel capacitor connected in parallel with it. The main protection circuit consists of a positive thyristor conduction branch and a negative thyristor conduction branch. The two conduction branches are connected in antiparallel and in series with the nonlinear voltage limiting branch to achieve bidirectional controlled conduction of the positive and negative half-cycles of the power frequency overvoltage at both ends of the controllable part of the thyristor-controlled surge arrester. Electrically isolated thyristor gate triggering control is achieved through a pulse transformer and an isolation triggering circuit.

The utility model discloses a kind of transfer equipment for pulse transformer production, including transfer trolley underframe, the upper end of the transfer trolley underframe is equipped with protective frame, the upper end of the protective frame is equipped with transfer box;The inside of the transfer box is uniformly equidistantly provided with placing cavity, the inside of each placing cavity is equipped with pulse transformer fixed frame;The inside of the pulse transformer fixed frame is provided with pulse transformer main body;The setting of this pulse transformer production transfer equipment, structure design is reasonable;Equipment is uniformly set in transfer box by placing cavity and pulse transformer fixed frame, realize single product independent storage, avoid mutual collision when batch transfer;The fixed cover of fixed frame end portion is connected by the clamping structure of clamping block and clamping groove, can be quickly closed and fixed, prevent product from falling out in transfer process, cooperate with the handle of fixed cover both sides, it is convenient for operator to take and place quickly, improve operation efficiency.

To provide a coil device, pulse transformer, electronic component, and method for manufacturing an electronic component that can further improve bonding strength and have excellent thermal shock resistance. [Solution] An electronic component having a wire and a terminal electrode to which the wire's lead is connected and which is at least partially covered with a deposited film. The surface of the deposited film on the terminal electrode to which the lead is connected has a glossy surface with fewer surface irregularities compared to a non-glossy surface that maintains the surface state when the deposited film was formed, and the glossy surface is located near the lead connected to the terminal electrode.

Provided is a coil device, a pulse transformer, an electronic device, and a method for manufacturing an electronic device, which have further improved joint strength and excellent heat shock resistance. The electronic device has a wire and a terminal electrode to which a lead wire of the wire is connected and at least a part of which is covered with a precipitated film. A surface of the precipitated film of the terminal electrode to which the lead wire is connected has a glossy surface that has less unevenness than a non-glossy surface that retains a surface state at the time of formation of the precipitated film, and the glossy surface is located in the vicinity of the lead wire connected to the terminal electrode.

The application discloses an image classification method and device based on a time-reversible pulse Transformer. The application proposes a time-reversible pulse Transformer neural network based on a multi-scale calculation architecture, which can output four image features of different resolutions for downstream visual tasks, and can directly use the last layer feature for image classification. Meanwhile, the reversible pulse Transformer main network adopts a time-reversible structure at a macro level, and pulse features of adjacent time steps can be calculated from each other, thereby saving the memory consumption of intermediate variables and reducing the training display memory. Compared with a similar structure of a non-reversible pulse Transformer, the training memory is obviously reduced, and the accuracy on the image classification task is significantly improved.

The application relates to a real-time data acquisition system and method for a motor driver, comprising: a data source and a sending unit, which are used for acquiring operation state quantities of a motor, performing Manchester coding, and obtaining Manchester coding signals; a signal conversion unit, which is used for converting the Manchester coding signals into differential signals and transmitting the differential signals, and performing electrical isolation between a high-voltage side and a low-voltage side through a pulse transformer during the transmission process; and a receiving and decoding unit, which is used for receiving the differential signals, decoding the differential signals in the form of a serial data stream, and restoring the operation state quantities. The application realizes completely transparent monitoring of a control loop of up to 100 kHz without interfering with a motor control algorithm, occupying very few CPU computing powers, and needing no secondary-side isolation power supply, and provides a low-cost and high-performance solution for optimization and fault diagnosis of a motor control algorithm.

The utility model discloses 400KHz high frequency high -power drive circuit, and drive circuit includes direct current 15V power module, four power switch pipe drive unit, two high frequency power drive transformer and four drive current and pulse signal integration unit. T1 and T2 are integrated as pulse transformer electrical isolation, isolated power supply and pulse signal transmission function, replace traditional four isolated power supply, N5 -N8 provide high -current drive and optimize pulse signal front, reduce switching loss. Circuit supplies power through 15V direct current voltage, and four -way control pulse signal is inputed N1 -N4 respectively, and T1 and T2 will signal transmission to N5 -N8, and finally output to power switch pipe. Support 400kHz high frequency operation, and drive current peak reaches 2A above, and switching loss reduces about 30%, and isolation voltage reaches 2500V, and independent isolated power module is saved, and cost and complexity are reduced. It is applicable to high -end equipment such as photoetching machine, has extensive industrial application prospect.

The utility model belongs to zero -crossing detection circuit technical field, especially for a kind of low power consumption and take isolated zero -crossing circuit, this low power consumption and take isolated zero -crossing circuit includes ac power unit, DC power unit, rectifier unit, zero -crossing detection unit, DC power unit is equipped with switch control subunit and pulse transformer subunit, zero -crossing detection unit is equipped with electronic switch, photoelectric coupler and zero -crossing signal detection circuit, the control end electric connection of electronic switch is to the live wire of ac power unit, pulse transformer subunit is equipped with auxiliary winding, the output end of auxiliary winding and the input side of photoelectric coupler and electronic switch are connected in series and then grounded, the auxiliary winding of transformer of pulse transformer subunit is powered to the input side inside photoelectric coupler of emitting diode, effectively reduce power consumption.And through electronic switch control photo-coupler input side emitting diode on-off, control accuracy is high, solve the problem of big zero-crossing positive and negative deviation caused by current photo-coupler isolation.