86 results about "Ring circuit" patented technology

The utility model discloses an automobile eddy current dual-redundancy Hall sensor and a working method thereof in the field of automobile rotor angle detection and hovercar paddle position detection, and the sensor comprises a housing which is annular, the housing is provided with a mounting cavity, the mounting cavity is internally provided with an annular circuit board, the circuit board is connected with a wiring harness assembly, and the wiring harness assembly is connected with the housing. A sealing glue layer is arranged above the circuit board in the shell mounting cavity, the lower side of the shell is provided with a downward extending cylinder which extends downwards, a Hall sensor is arranged in the downward extending cylinder, and the Hall sensor is correspondingly connected with the circuit board. According to the utility model, through the dual-redundancy design, the eddy current sensor can reach ASIC-D at most; the Hall sensor is integrated into the circuit, so that the space occupied by the arrangement of the two sensors can be effectively reduced, and the weight is reduced.

The invention relates to the technical field of power management in an integrated circuit, in particular to an ultra-low noise LDO with a programmable current limit and quick start. Comprising a reference current generating circuit, an RC filter, a first negative feedback loop, a control resistor, a comparison control circuit, a programmable current limiting circuit, a sampling tube MP0 and a first switch current source. The first negative feedback loop comprises an error amplifier, a buffer stage and a power tube MP1; before the LDO is started, current limit programming is achieved; after current limit programming is finished, the LDO starts to start, an LDO quick start control signal is generated through the programmable current limit circuit, an extra charging path is provided for the RC filter circuit through the constant current source, and quick start of the ultralow-noise LDO is achieved; when the output voltage of the LDO is close to a preset value, the quick starting circuit is closed; according to the LDO, the current limit is adjustable, the protection capability to the rear stage is improved, and the reliability of the whole system is enhanced.

The embodiment of the invention discloses a constant current control circuit, a fast charging chip, fast charging equipment and a constant current control method, the circuit comprises a current comparison module, a control module and a voltage loop module, the current comparison module is used for outputting a first control signal when the output current of the fast charging equipment is greater than a preset reference current, and the control module is used for outputting a second control signal when the output current of the fast charging equipment is greater than the preset reference current; when the output current is smaller than the reference current, a second control signal is output; the voltage loop module responds to the output voltage and adjusts the feedback voltage to be equal to the reference voltage when the feedback voltage is larger than or smaller than the preset reference voltage; the control module responds to the first control signal or the second signal and correspondingly adjusts the reference voltage or the feedback voltage so that the output current can be kept within the preset current range. According to the embodiment of the invention, the control module is arranged, the reference voltage or the feedback voltage is adjusted according to the output current, and then the output voltage is controlled, so that constant-current output is realized, the design of a current loop can be omitted, and the circuit is simplified.

The present disclosure provides a radio frequency apparatus, an antenna and an electronic device, and belongs to the field of communication technology. The radio frequency apparatus includes first and second dielectric substrates opposite to each other, first and second phase shifting structures between the first and second dielectric substrates; wherein the radio frequency apparatus further includes a first connection electrode and a second connection electrode; the first phase shifting structure and the second phase shifting structure each have a first end and a second end, the first ends of the first phase shifting structure and the second phase shifting structure are electrically connected to each other by the first connection electrode; the second ends of the first phase shifting structure and the second phase shifting structure are electrically connected to each other by the second connection electrode, to form a ring circuit structure.

The invention provides a large-distance spacer ring distance protection mis-tripping prevention method and device, and the method comprises the steps: building a mis-tripping risk conduction matrix through collecting the fault propagation record of a spacer ring circuit breaker node, and achieving the tracking of a fault path; performing spectral analysis on the tracking path by applying wavelet decomposition, and identifying a key protection section; extracting an impedance aggregation state and a power transmission track of each node, establishing an energy distribution mode and forming an impedance-power-energy coupling situation; a time window is activated based on the coupling situation, and a cooperative distance protection potential field is constructed through a communication protocol; executing gradient scanning to construct a collaborative network, and generating a multi-dimensional protection decision domain by adopting vector superposition; global search is carried out to position an optimal balance point, a layered protection setting sequence is generated, and a cooperative adjustment strategy is formulated; and monitoring a dynamic impedance state in real time to identify a transition critical point, triggering cooperative adjustment to complete intelligent anti-error tripping, and realizing the transformation of large-distance spacer ring protection from passive to active.

A self-power-consumption power supply system suitable for a large energy storage power station comprises a low-voltage station power-consumption bus power distribution cabinet installed in a booster station power distribution room, the low-voltage station power-consumption bus power distribution cabinet is connected with at least one energy storage system local distribution box, and the energy storage system local distribution box is arranged on the ground of an energy storage area. The energy storage system local distribution box is connected with at least one dual-power-supply change-over switch, and one path of the dual-power-supply change-over switch is connected with an auxiliary transformer of the energy storage PCS and used as a normal power supply. The other path of the dual-power change-over switch is connected with a station power distribution box to serve as a standby power supply; and the dual-power change-over switch is positioned on the energy storage PCS equipment. According to the utility model, an affiliated transformer of energy storage PCS equipment is used as a main power supply, and electricity of a low-voltage station of an energy storage power station is used as a standby power supply. Wherein the standby power supply is reasonably provided with an on-site distribution box and a looped network circuit breaker box according to equipment arrangement and equipment grouping of the energy storage power station, so that the stability of self power utilization of the energy storage power station can be effectively ensured, and the workload of equipment and field installation is saved.

The invention discloses a low-power-consumption phase-locked loop circuit with an automatic frequency calibration function. Comprising a voltage-controlled oscillator, an automatic frequency calibration module, a programmable frequency divider, a phase frequency detector, a plurality of charge pump arrays and a switch filter, wherein the automatic frequency calibration module and the programmable frequency divider are in signal connection with the voltage-controlled oscillator; the phase frequency detector is in signal connection with the programmable frequency divider; the charge pump arrays are in signal connection with the phase frequency detector; the switch filter is in signal connection with the voltage-controlled oscillator; the voltage-controlled oscillator comprises a plurality of delay units, and the voltage-controlled oscillator is an annular oscillator formed by cascading a plurality of delay unit rings. The delay unit is a cross-coupled structure based on an inverter and comprises a plurality of transistors, and the plurality of transistors comprise a plurality of PMOS (P-channel Metal Oxide Semiconductor) transistors and a plurality of NMOS (N-channel Metal Oxide Semiconductor) transistors. According to the invention, under the low power supply voltage, four-phase intermediate frequency signals are output with extremely low power consumption, and the application requirements of rapid locking and low noise are met.

The invention discloses an automobile eddy current dual-redundancy Hall sensor and a working method thereof in the field of automobile rotor angle detection and hovercar paddle position detection, the automobile eddy current dual-redundancy Hall sensor comprises a shell, the shell is annular, a mounting cavity is formed in the shell, an annular circuit board is arranged in the mounting cavity, the circuit board is connected with a wiring harness assembly, and the wiring harness assembly is connected with a motor. A sealing glue layer is arranged above the circuit board in the shell mounting cavity, the lower side of the shell is provided with a downward extending cylinder which extends downwards, a Hall sensor is arranged in the downward extending cylinder, and the Hall sensor is correspondingly connected with the circuit board. According to the invention, through the dual-redundancy design, the eddy current sensor can reach ASIC-D at most; the Hall sensor is integrated into the circuit, so that the space occupied by the arrangement of the two sensors can be effectively reduced, and the weight is reduced.

The utility model discloses a ring-shaped light source with a variable aperture, which comprises a ring-shaped switching base, a first detection opening, a second detection opening and a light source, an annular light source is arranged in the middle of the adapter base, the annular light source comprises a light source base and an upper cover plate which are buckled with each other, a second detection opening and a third detection opening are formed in the light source base and the upper cover plate respectively, and an annular circuit board is arranged between the light source base and the upper cover plate; a plurality of LED lamp beads are uniformly arranged on the annular circuit board; an adjustable diaphragm is arranged above the second detection opening, aperture adjustment of the second detection opening is achieved, and the axis of the first detection opening, the axis of the second detection opening, the axis of the third detection opening and the axis of the adjustable diaphragm are located on the same axis. The aperture of the annular light source can be changed through the adjustable diaphragm so as to meet the detection requirements of different product sizes, the adjustment is convenient, the cost is saved, and the detection efficiency is improved.

An electrical outlet front plate 301, comprising supply terminals 121, 122, 123, for connection to a ring circuit 111, 112, 113, a live supply terminal 121, a neutral supply terminal 122, and a ground

A knob device is disclosed. The knob device includes a base, an operating cover, a ring-shaped circuit board, a brake ring, a resistance element, a plurality of elastic elements, a plurality of conductive trigger elements, and a plurality of reset conductive elements. The base has an external conductive assembly. The operating cover is rotatably disposed on the base and is movable up and down. The ring-shaped circuit board is disposed in the base. The brake ring is fixed to the ring-shaped circuit board and connected to the operating cover. The resistance element is fixed to the base and abuts against the brake ring. The plurality of elastic elements are disposed on the brake ring or the ring-shaped circuit board. The plurality of conductive trigger elements are fixed to the bottom surface of the operating cover. The plurality of reset conductive elements are disposed on the brake ring. When the operating cover is pressed, the conductive trigger elements squeeze the elastic elements and push the reset conductive elements to contact the external conductive assembly. When the operating cover is released, the elastic elements push away the conductive trigger elements and separate from the reset conductive elements.

In the image decoding method according to the present disclosure, indication information on whether an adaptive loop filter (ALF) process to be applied to a current block is applied at a picture level or a slice level is proposed.

A multi-node server includes a plurality of nodes. Each of the nodes includes a power supply, a transmission circuit, and a control circuit. The power supply is configured to provide a power source. The transmission circuit is configured to transmit the power source and a power status signal to the transmission circuit of the two adjacent nodes, and receive the power source and the power status signal of the two adjacent nodes. The control circuit is configured to control the transmission circuit and the power supply to transmit the power source and the power status signal to the transmission circuit of the two adjacent nodes. The transmission circuit of each of the nodes are connected in series as a ring circuit. The number of the nodes is N, the power of the power supply is Ps, the total power budget of the multi-node server is Pb, and Ps=Pb / (N−1).

Provided is a magnetic fastening device in which the power consumption of a magnetizing coil of a magnet material having reversible polarity is reduced. A magnetic fastening device (10) is provided with: a neodymium magnet (18); the polarity of the aluminum-nickel-cobalt magnet (16) can be reversed through the magnetizing coil (17); a controller (7); a rectifier circuit (31); and a first circulation circuit (32). A rectifier circuit (31) half-wave rectifies an AC power source, supplies a positive-side pulse to a magnetizing coil (17) for a predetermined period when magnetization of the magnetizing coil (17) is instructed by a controller (7), and supplies a negative-side pulse to the magnetizing coil (17) for a predetermined period when demagnetization is instructed. In the first circulation circuit (32), a diode (34) and a switch (35) are connected in series, when the controller (7) instructs magnetization, the switch (35) is turned on, a closed circuit is formed with the magnetizing coil (17), and current caused by counter electromotive force is circulated, and when the controller (7) instructs demagnetization of the magnetizing coil (17), the switch (35) is turned off.

The invention discloses a ring oscillation circuit, a chip and electronic equipment, and belongs to the technical field of integrated circuits. The annular oscillation circuit comprises an oscillation driving circuit and an oscillation ring circuit; the oscillation driving circuit is used for driving the oscillation ring circuit according to the first driving capability under the condition that the oscillation ring circuit does not start oscillation; under the condition that the oscillation ring circuit starts oscillation, the oscillation ring circuit is driven according to the second driving capacity, and the first driving capacity is larger than the second driving capacity; and the oscillation ring circuit is used for outputting an orthogonal signal according to the driving of the oscillation driving circuit. According to the ring oscillation circuit, the driving capability of the oscillation ring circuit is dynamically controlled through the oscillation driving circuit, so that the problem that the oscillation ring circuit does not start oscillation due to insufficient driving capability can be avoided, the problem that the oscillation frequency is reduced due to overlarge driving capability can be avoided, an orthogonal signal with higher frequency can be generated, and the reliability of the ring oscillation circuit is improved. Therefore, the method can be applied to applications with higher frequency generation.

The utility model discloses a multifunctional control system based on a mechanical arm end tool, a flexible ring circuit board is provided with three buttons, an indicating lamp ring and a constant current source circuit, the circuit board is connected with a mechanical arm tool port, and an upper computer collects signals of the buttons through a control box to carry out linear motion, plane keeping and free motion. In the using process, the lamp ring is used for indicating the state of the mechanical arm, and the lamp ring can be directly dragged to the mechanical arm and can be stopped after the lamp ring is loosened only by pressing the key down corresponding operation beside the mechanical arm. The method is simple and safe, the action of operating the upper computer and the mechanical arm back and forth by a doctor is relieved, and the possibility of misoperation is also prevented.

The application provides a peak inductive reuse CML divide-by-two frequency divider circuit. The circuit comprises a first CML latch and a second CML latch, the two CML latches are interconnected in a divide-by-two frequency division mode; a first peak inductor, a second peak inductor, a third peak inductor and a fourth peak inductor, the four peak inductors are sequentially connected in a ring circuit; a non-inverting output end of the first CML latch is connected to a first common connection point of the first peak inductor and the fourth peak inductor; an inverting output end of the first CML latch is connected to a second common connection point of the second peak inductor and the third peak inductor; a non-inverting output end of the second CML latch is connected to a third common connection point of the first peak inductor and the second peak inductor; and an inverting output end of the second CML latch is connected to a fourth common connection point of the third peak inductor and the fourth peak inductor. The technical scheme of the application can improve the frequency division speed while reducing the chip area.

The invention relates to an oscillator with a wide oscillation amplitude range. The oscillator with the wide oscillation amplitude range comprises an integrating circuit 110, a level conversion circuit 120 and an output driving circuit 130, wherein the integrating circuit 110 charges and discharges a capacitor C1 through a mirror image bias current IREF to generate a ramp voltage, and the power supply voltage VDD1 of the integrating circuit 110 can be reduced to 3.3 V to the minimum, so that the power consumption is reduced; the output voltage is converted by the level conversion circuit 120 and finally generates a clock frequency CLK by the output driving circuit 130, the output voltage range is related to VDD2, the maximum value can be 10V, the minimum value can be consistent with VDD1, and wide-range output can be realized; the clock frequency controls the on and off of an MOS tube in the integrating circuit so as to realize the charge and discharge loop control of the integrating capacitor. The oscillator is low in power consumption, wide in power supply voltage range and simple in structure, and can drive a large load and provide high-voltage output.

An oscillation apparatus includes: an oscillator including a resonator and a magnetic-field generating unit, the resonator including a loop circuit and a capacitor, the loop circuit including a first superconducting line, a first Josephson junction, a second superconducting line, and a second Josephson junction connected in a ring shape, the magnetic-field generating unit being configured to apply a magnetic field to the loop circuit, and the oscillator being configured to perform parametric oscillation; a read-out unit for reading out an internal state of the oscillator; and a filter configured to restrict transmission of a signal in a predetermined frequency band. A circuit in which the capacitor and the loop circuit are connected in a ring shape is connected to the read-out unit through the filter.

A loop circuit (21) that is electrically connected to an IC chip (30) is formed on a film (20). The loop circuit (21) has metal wiring (20b) disposed in a recessed section (21a) of the film (20). The metal wiring (20b) has: a first terminal section (21b1) that is electrically connected to the IC chip (30); a second terminal section (21b2) that is electrically connected to the first terminal section (21b1) via the IC chip (30); and a wiring section (21b3) that connects the first terminal section (21b1) and the second terminal section (21b2). The wiring section (21b3) has a thickness of 10 μm or less and a line width of 0.2 mm or less.

A circulating heating tube device and a heating method for a cleaning machine belong to the technical field of heating tubes. It provides a circulating heating tube device and a heating method for a cleaning machine that can effectively dissipate heat and has a fast heating speed. The outer tube is sleeved on the inner tube and a gap is provided between the two. The negative electrode wire and the two electric heating wires are arranged in the gap along the axial direction of the outer tube. The gap is filled with a heat-conducting insulating medium. The left side of the annular circuit board is fixedly installed in the middle of the right side of the left annular cover plate. The left end of the negative electrode wire is electrically connected to the two electric heating wires through the annular circuit board. Three connecting holes corresponding to the negative electrode wire and the two electric heating wires are provided on the right annular cover plate. One end of the three connecting tubes is sealed and fixedly connected to the three connecting holes one by one. The negative electrode wire and the two positive electrode wires are arranged in the three connecting tubes one by one. The left ends of the two positive electrode wires are electrically connected to the right ends of the two electric heating wires one by one. The present invention has uniform heat transfer and fast heating speed.

The invention relates to the technical field of rotating shaft torque measuring systems, in particular to a torque measuring system. The device comprises a detection device and a detection module installed on the detection device. The detection device is provided with a fixed shell, and a connecting body is rotatably arranged in the fixed shell; the connecting body is used for realizing the connection between the power shaft and the load shaft, and the power shaft and the load shaft jointly form a rotating shaft to be detected; the detection module comprises an inner ring circuit unit arranged at the connecting body and an outer ring circuit unit arranged at the fixed shell, and the inner ring circuit unit and the outer ring circuit unit are independently arranged. When the measuring system is used, non-contact signal transmission between the dynamically rotating connecting body and the fixed shell can be well achieved, and the real-time performance and accuracy between the generated optical signal and the measured torque loading force are effectively guaranteed.

The present invention relates to the field of sensor technology and discloses a centrally perforated annular ceramic capacitor, wherein the annular capacitor is formed by fusing and sintering a ceramic base and a ceramic reaction membrane, and wherein the axes of the ceramic base and the ceramic reaction membrane are each provided with through holes to provide a mounting channel for the circuit elements to be assembled, so that the annular capacitor can be more conveniently integrated into the complex circuit of the temperature-pressure sensor in order to simplify the overall structure of the temperature-pressure sensor, including the circuit and sealing structure, in this way giving the temperature-pressure sensor a structure of automated assembly in order to reduce manufacturing and assembly costs;In comparison to the disc-shaped ceramic capacitor without a through-hole in the middle, the toroidal capacitor with the arrangement of the first ring circuit and the second ring circuit has a higher initial value and a greater amount of change, so that the toroidal capacitor has a wider measuring range and a finer pressure sensing gradation to improve the accuracy of pressure detection.

The utility model discloses a controller U1, a vibration sensor circuit, a receiving circuit, an LED lamp circuit, an antenna circuit and a power supply circuit, the vibration sensor circuit, the receiving circuit, the LED lamp circuit, the antenna circuit and the power supply circuit are respectively connected with the controller U1, and the LED lamp circuit and the vibration sensor circuit are respectively connected with the power supply circuit. The vibration sensor circuit comprises a diode D1, a vibration sensor T1, a capacitor C8, a resistor R6 and a resistor R8, the positive electrode of the diode D1 is connected with the power supply circuit, the negative electrode of the diode D1 is connected with one end of the vibration sensor T1 through the resistor R6, the other end of the vibration sensor T1 is connected with the signal input end P18 of the controller U1 through the resistor R8, and the other end of the vibration sensor T1 is connected with the ground GND through the capacitor C8. The device can monitor and record the daily activity amount in real time, and when poultry returns to the house at night, counting is accurate and efficient, and the endurance time is long.

The invention provides an ultra-low phase noise frequency source circuit based on YTO and a frequency planning method, and belongs to the technical field of microwave radio frequency and frequency sources, the frequency source circuit comprises a main ring circuit, a first offset ring circuit, a second offset ring circuit, a clock circuit, a YTO driving circuit, a control circuit and the like; the main loop circuit comprises a first phase discriminator module U1, a first loop module U2, a YTO module U3, a first coupler module U4, a first mixer module U5, a first filter module U6, an amplifier module U7, a second mixer module U8 and the like. The method is realized based on the frequency source circuit. According to the scheme of the invention, the multi-stage conversion loop is adopted to generate the frequency signal with the low phase noise, the frequency is gradually expanded, finally, the YTO module can output the frequency signal with the low phase noise, frequency spectrum planning is carried out according to the frequency range output by the YTO module, and the finally output frequency spectrum of the YTO module is pure and low in stray.

A slotless electric motor and means for making the same, wherein the slotless electric motor has a cylindrical air gap between an inner and outer cylindrical layer. Arcuate orthocyclic windings are secured within the air gap, and electrically connected to an annular circuit board, the annular circuit board further having means to electrically connect power and control wiring to the annular circuit board and therein to the orthocyclic windings.

The invention provides a fully differential operational amplifier and electronic equipment. The fully differential operational amplifier comprises a fully differential ClassAB output stage, a cascode structure, a floating current source, a zero-pole compensation circuit, a compensation zeroing circuit and an error amplifier, the output stage, the cascode structure and the floating current source are connected in pairs; the zero pole compensation circuit is connected with the output stage and the cascode structure; the error amplifier is respectively connected with the cascode structure and the zero pole compensation circuit; the compensation zeroing circuit is connected with the output stage; the error amplifier is connected with a common-mode reference level; two ports of the cascode structure are used as differential signal input ends; and two ports of the output stage are used as differential signal output ends. The common-mode feedback scheme is simple, few in loop, small in power consumption, small in area, easy to implement, free of influence on a differential-mode loop, good in common-mode stability, good in common-mode response speed and precision and good in circuit performance.

The utility model discloses a radio frequency identification (RFID) near field antenna, which comprises an upper antenna layer, a substrate material layer, a metal connecting layer, a lower antenna layer and a chip, the upper antenna layer and the lower antenna layer are conductively connected through the metal connecting layer to form a continuous annular circuit structure, the antenna layer is annular, and the chip is arranged on the substrate material layer. The side end of the upper antenna layer is connected with a first parallel metal block through a first connecting line, the side end of the lower antenna layer is connected with a second parallel metal block through a second connecting line, the first parallel metal block and the second parallel metal block are vertically opposite and are separated through a substrate material layer, and a classic parallel plate capacitor structure is formed. Through the above mode, the antenna impedance is convenient to adjust, the antenna can be rapidly adapted to various RFID chips by adjusting the area of the antenna loop and the area of the parallel plate capacitor, the impedance matching problem of the antenna and the chip under the condition of small size is solved, and the reading distance of the small-size near-field antenna is improved.

The utility model is suitable for the technical field of photovoltaic power generation, and provides a sensor coil structure, a sensor and a photovoltaic system, and the sensor coil structure comprises a first annular circuit board; the magnetic core ring is arranged on the periphery of the first annular circuit board; the second annular circuit board is arranged on the periphery of the magnetic core ring; the sensor coil is wound on the first annular circuit board and the second annular circuit board; and the sensor coil adopts a crossed winding routing mode which is overlapped with the current direction. By means of the arrangement, the wire turns of the sensor coil are wound in a crossed mode, the distributed capacitance between the wire turns of the coil is effectively reduced, the detection bandwidth of the sensor is improved, and it is ensured that fault arc current in a circuit is reliably sensed.

The utility model discloses a refrigeration seat ring circuit. A main control unit U2; the key unit is connected with the main control unit U2 so as to switch a refrigeration mode; the positive electrode of the temperature probe terminal J3 receives a voltage, and the negative electrode of the temperature probe terminal J3 is connected with the acquisition end of the main control unit U2; the positive electrode of the refrigeration sheet terminal J4 receives a voltage, the negative electrode of the refrigeration sheet terminal J4 is connected with the source electrode of the MOS tube Q1, the drain electrode of the refrigeration sheet terminal J4 is grounded, and the grid electrode is connected with the main control unit U2; the positive electrode of the fan terminal J5 receives a voltage, the negative electrode of the fan terminal J5 is connected with the source electrode of the MOS tube Q2, the drain electrode of the fan terminal J5 is grounded, and the grid electrode of the fan terminal J5 is connected with the main control unit U2. And then the main control unit U2 sends signals to the refrigeration sheet and the fan through the refrigeration sheet terminal J4 and the fan terminal J5 to drive the refrigeration sheet and the fan to work, so that refrigeration is realized, and the problem that the high temperature is not suitable in summer is solved for a user.