1981 results about "Electronic circuit" patented technology

A liquid cooled heat exchanger includes first and second heat exchange chambers that are in thermal communication. The first heat exchange chamber is downstream of the second heat exchanges chamber and receives heat from a heat generating device, such as an electronic circuit. Heat in the first heat exchange chamber can be transferred to the second heat exchange chamber to increase the temperature of a subcooled liquid working fluid in the second heat exchange chamber. This can render a pressure drop across the heat exchanger that is relatively insensitive to a fraction of liquid that is vaporized in the first heat exchange chamber.

The utility model relates to the technical field of electronic circuits, in particular to a material receiving device which comprises a lead screw elevator, a bearing plate and a pressing assembly, the bearing plate is used for placing stacked ceramic circuit boards, the lead screw elevator is connected with the bearing plate, and the lead screw elevator is used for driving the bearing plate to move in the vertical direction. The pressing assembly comprises a clamping block, a connecting rod, a pressing head and a first driving device, the connecting rod penetrates through the clamping block and the pressing head, so that the pressing head is rotationally connected with the clamping block, the first driving device is horizontally arranged, the output end of the first driving device is connected with the pressing head, and the first driving device is used for driving the pressing head to rotate around the connecting rod; therefore, the pressing head can press the ceramic circuit boards stacked on the bearing plate. The problem that when a traditional receiving device transports stacked ceramic circuit boards, the stacked ceramic circuit boards are prone to displacement is solved.

The invention discloses a dual-mode TDC implementation method and system based on an FPGA, and relates to the technical field of electronic circuits, and the technical key points are as follows: after a dual-mode signal generation circuit receives each STOP pulse, a logic sequence opposite to the last time is immediately output as an effective delay signal, the reset of the last time signal in a time delay chain (TDL) is not required, and the time delay time is shortened; when the logic signal propagated last time does not completely fade, the new reverse logic signal can be independently propagated in the TDL, and the new reverse logic signal and the new reverse logic signal do not interfere with each other; meanwhile, the rising edge of the system clock only updates the state of the main trigger to serve as the logic reference of the next trigger, and an additional reset process is not needed, so that the dead zone time of single measurement is strictly controlled to be a single period corresponding to the system clock, and compared with a double-period dead zone in an existing scheme, the dead zone time is remarkably shortened, and the measurement rate is synchronously doubled; in a high-frequency pulse measurement scene, pulse loss caused by an overlong dead zone can be effectively avoided, and the measurement efficiency is remarkably improved.

The invention relates to the technical field of electronic circuits, and provides a programming port and dimming port shared circuit which comprises a dimming circuit, a main control circuit, a power supply circuit, a burning circuit, a switching circuit, a first port and a second port, the first port serves as a common port of positive dimming signals and burning signals, and the second port is used for being connected with an external dimming signal cathode. The signal receiving end of the dimming circuit is connected with the first port, the second port is grounded, the burning port of the main control circuit is connected with the first port through the burning circuit, the output end of the power supply circuit provides a working power supply for the main control circuit, when the system power supply works, the switching circuit is switched off, and the system power supply supplies power to the power supply circuit, and when the system power supply does not work, the switching circuit is switched on. The burning signal supplies power to the power supply circuit; according to the invention, by optimizing the power supply design and utilizing the original power supply logic, the normal dimming of the power supply during working is ingeniously realized, and the off-line programming function can be realized when the power supply does not pass through.

The invention provides an operation state data processing method and system applied to an electronic circuit board, and the method comprises the steps: obtaining the real-time voltage fluctuation data of each power path of the electronic circuit board in a preset monitoring time, and carrying out the self-adaptive time-frequency decomposition of the real-time voltage fluctuation data; separating to obtain a steady-state substrate component representing stable operation characteristics of the circuit board and an instantaneous pulsation component reflecting an instantaneous interference phenomenon, and constructing an amplitude-time sequence correlation heat map in a two-dimensional data plane based on an amplitude change sequence of the steady-state substrate component and a time interval parameter corresponding to a sampling timestamp; performing pixel-by-pixel morphological fusion on the pulse pattern and a standard pulse pattern stored when the circuit board leaves a factory to generate a fusion difference spectrum containing space distribution characteristics of difference pixels, and calculating a state coupling coefficient of each power supply path according to the space density distribution characteristics of the difference pixels; and integrating the state coupling coefficients of all the power paths to obtain a quantitative condensation index. According to the invention, the reliability and comprehensiveness of operation state evaluation can be improved.

The invention relates to the technical field of electronic circuits, in particular to a polar field magnet coil power supply system and a power supply method. The polar field magnet coil power supply system comprises a super capacitor, a control module and a driving module. The control module is coupled with the driving module and the polar field magnet coil, and the control module is configured to obtain feedback current of the polar field magnet coil, generate a first pulse width modulation signal group and generate a second pulse width modulation signal group. And the driving module is configured to respond to the first pulse width modulation signal group and generate the second pulse width modulation signal group, transmit energy stored by the super capacitor to the polar field magnet coil in the current rising sub-stage and the current maintaining sub-stage, and feed back the energy of the polar field magnet coil to the super capacitor in the current feedback sub-stage. According to the polar field magnet coil power supply system, the energy utilization rate can be greatly improved, the problem that energy cannot be recycled in the prior art is solved, and the problem that the failure rate is high is solved.

The invention relates to the technical field of electronic circuits, in particular to a filter circuit, a voltage filter control circuit, a chip and electronic equipment. The filter circuit comprises a counter, a first data selector, a digital operation circuit and a register, the counter is used for receiving the counting enable signal, outputting a counting mark value to the first data selector, determining a corresponding current logic operation mode according to the current counting mark value, and performing logic operation on the intermediate input parameter according to the current logic operation mode to obtain a first voltage error value after filtering processing; by adopting the filter circuit provided by the invention, required logical operation can be completed by virtue of the first data selector and the digital operation circuit, so that the first voltage error value is output, and the filtered voltage signal is adjusted according to the first voltage error value, so that the set frequency component in the output voltage signal is filtered out; in this way, complex filter coefficients do not need to be configured, a processor with higher computing power does not need to be used, and hardware cost is saved.

The invention relates to the technical field of electronic circuits, in particular to a field effect transistor dynamic threshold voltage measuring method and system. The method comprises the following steps: generating a high-speed pulse signal with preset rise time through a pulse signal generator; applying the high-speed pulse signal to the grid electrode of the field-effect tube to be tested, and collecting the voltage waveform of the grid electrode of the field-effect tube through an oscilloscope, and recording the voltage waveform as a grid electrode voltage waveform; the current probe monitors the current response of the drain electrode of the field effect transistor in real time, the current response is recorded as drain electrode current response, and the sampling rate of the drain electrode current response is synchronous with the sampling rate of the grid voltage waveform. According to the invention, the channel establishment delay is quantified in situ on the electrical characteristic, so that the threshold voltage is redefined by the potential at the completion moment of the channel formation, and the concealment of the transient characteristic caused by direct current slow scanning is eliminated.

The invention relates to the cross technical field of computer-aided engineering and audio equipment design, discloses a circuit design simulation-based disc player design optimization method and system, and aims to solve the problem that the existing disc player design depends on physical prototype trial-manufacture and subjective listening evaluation and lacks multi-physical domain co-simulation capability. The method comprises the following steps: constructing a unified multi-physical domain model comprising a mechanical transducer, an electromechanical transducer and an electronic circuit sub-model; bidirectional coupling co-simulation based on the time sequence is executed, and an output electric signal is generated; extracting objective audio performance indexes such as total harmonic distortion and signal-to-noise ratio; and carrying out multi-objective optimization on the key design parameters by utilizing a genetic algorithm, and outputting a Pareto optimal scheme. The system comprises a model construction module, a co-simulation module, a performance index extraction module and an optimization module. Through high-fidelity full-link simulation and automatic optimization, the design efficiency and the audio fidelity are remarkably improved, and the research and development cost is reduced.

The invention belongs to the technical field of electronic circuits, and provides a low-dropout linear voltage stabilizing circuit, a low-dropout linear voltage regulator, a power supply device and electronic equipment. The low-dropout linear voltage stabilizing circuit comprises a bias module, an input module, an intermediate stage module, an output module, a first compensation module and a second compensation module, the intermediate stage module is connected with the input module, the output module, the first compensation module, the second compensation module and the bias module, and the output module is connected with the input module, the first compensation module and a load. The input module is connected with the bias module. According to the application, the first zero point which is positively correlated with the load current and irrelevant to the output voltage is generated through the first compensation module, namely, the first zero point can be increased along with the increase of the load current, is reduced along with the reduction of the load current, and is not influenced by the output voltage; therefore, the tracking compensation of the load current is realized, and the purpose that the tracking compensation effect does not change along with the output voltage is achieved.

The embodiment of the utility model relates to an enhancement mode high electron mobility transistor device. An enhanced mode high electron mobility transistor device includes a semiconductor body having a top surface and including a heterostructure configured to generate a two-dimensional electron gas. A high electron mobility transistor device includes a gate structure extending over a top surface of a semiconductor body, biased to electrically control a two-dimensional electron gas, and including a functional layer and a gate contact in direct physical and electrical contact with each other. The gate contact is made of a layer of conductive material, and the functional layer is made of a layer of two-dimensional semiconductor material and includes a first doped portion having P-type conductivity extending over a top surface of the semiconductor body and interposed along a first axis between the semiconductor body and the gate contact. According to the embodiment of the invention, the low power consumption of the transistor in use is ensured, and the integration of the transistor into an electronic circuit in a design step is simplified.

A system for monitoring conveyor belts includes an emitter, a sensor and electronic circuitry. The emitter is configured to emit light at the surface of a conveyor belt. The sensor is configured to measure the light reflected from the belt surface. The circuitry is configured to identify a defect in or on the surface of the belt based on the light received from the sensor, and determine the source or cause of the observed surface defect. Machine learning including data from outside sources may be used in the root cause analysis.

The invention relates to the technical field of electronic circuits, in particular to a radio frequency front-end lightning protection circuit and lightning protection equipment. The circuit comprises a primary discharge module, a radio frequency signal protection branch and a direct current power supply protection branch, the input end of the primary discharge module is connected with an antenna port, and the primary discharge module is used for discharging high-energy pulses generated by lightning stroke; the radio frequency signal protection branch is connected between the output end of the primary discharge module and a low noise amplifier of the radio frequency receiving link, and is used for coupling a radio frequency signal to the low noise amplifier and carrying out isolation and voltage limiting on a lightning stroke residual pulse; the direct current power supply protection branch circuit is connected between the output end of the primary discharge module and a power supply voltage stabilizer of the direct current power supply link, and is used for transmitting a direct current power supply to the power supply voltage stabilizer and carrying out isolation and voltage limiting on the lightning stroke residual pulse. The circuit can be combined with a radio frequency front end and used for a navigation antenna, and the lightning stroke protection capability is improved.

An electro-optical integrated circuit comprising an optical transmitter and an optical receiver is disclosed in which a monolithically integrated electro-absorption modulated laser (EML) can operate bi-directionally in both transmitter and receiver modes. Vertically stacked waveguides for lasers and electro-absorption modulators (EAMs) are provided. The laser and the EAM are optically coupled through a transverse conical vertical optical coupler. The EML includes monolithically integrated electronic circuitry, such as drivers and control electronics for driving the laser as the EML and the EAM in the transmitter mode. The control circuit includes a transimpedance amplifier (TIA). The EAM has a first portion and a second portion that may be independently biased. In receiver mode, the laser current is reduced near a threshold, a first portion of the EAM is biased to absorb residual laser light, while a second portion of the EAM provides photocurrent to the TIA as a photodiode receiver.

This invention relates to a method for surface roughening of high-end copper foil for electronic circuits, comprising the following steps: sequentially performing acid washing, roughening, blackening, ashing, passivation, and coupling agent coating on raw copper foil, with water washing steps interspersed between these steps, and finally drying and winding. The method is characterized in that the roughening step uses an alkaline plating solution containing copper pyrophosphate. This invention provides an alkaline plating solution for alkaline roughening of raw copper foil, generating grains with lower roughness on the already extremely thin surface of high-end copper foil. The grain size is between 0.02 and 0.1 micrometers. After deposition on the raw foil, the surface roughness of the finished foil increases by approximately 0.2 to 0.3 micrometers, ensuring that the surface roughness of the final product meets the requirements of high-end copper foil while maintaining peel strength.

A solder alloy consisting of Ag: 3.1 to 4.0% by mass, Cu: 0.6 to 0.8% by mass, Bi: 1.5 to 5.5% by mass, Sb: 1.0 to 6.0% by mass, Co: 0.001 to 0.030% by mass, Fe: 0.02 to 0.05% by mass, As: 0.002 to 0.250% by mass, and a balance Sn.

The invention provides a self-adaptive ripple suppression circuit based on an MOSFET, and relates to the technical field of electronic circuits. The circuit comprises an input alternating current end EMC filtering surge protection circuit, a rectification circuit, an absorption protection filtering circuit, a clamping absorption circuit, a detection protection circuit, a control circuit, a power follow current circuit, an output filtering circuit, a stroboflash removing circuit and an LED load circuit which are connected in sequence. Under the condition that the MOSFET self-adaptive ripple suppression circuit is in a working state, voltage at the two ends of the sampling resistor is fed back to a grid electrode and a source electrode of the MOS tube, on-resistance of the MOS tube is adjusted through change of the sampling voltage on the basis of the characteristic that the MOS tube works in a variable resistance area, and output current ripples are dynamically suppressed. The circuit has excellent adaptive capacity, can dynamically suppress output current ripples in a wide load range through a simple simulation negative feedback loop, and is quick in response.

A wire cutting device for the welding of an electronic circuit board, and a wire cutting method therefor. The device comprises a device body and a dust suction structure, wherein an observation window is provided in the front side of the device body; an electronic circuit board entrance and exit are provided in the left and right sides of the device body; a fixing and limiting structure, a cutting structure and a cutter change structure are provided in an inner cavity of the device body; the fixing and limiting structure comprises hydraulic telescopic rods I, which are fixedly connected to the bottom of the inner cavity of the device body; and a pressing plate adapted to an electronic circuit board is fixedly connected to the top of each hydraulic telescopic rod I. In the wire cutting device for the welding of an electronic circuit board and the wire cutting method therefor, a positioning plate is used to limit the distance between a cutter and the electronic circuit board, such that the cutting heights of pins can be kept consistent, thereby improving the cutting quality; moreover, during a cutting process, clamping plates are used to clamp the pins, such that pulling or dragging by the cutter during the cutting process are prevented, thereby ensuring the welding quality of the electronic circuit board.

A method comprising obtaining (611) video data comprising meta-data representative of a level of reliability of a neural network inference process implemented by an analog device, the neural network inference process being applied to decode the video data, an analog device being an electronic circuitry unable to ensure a repeatability of an output result of said electronic circuitry when said electronic circuitry receives same input data; and, decoding (612) the video data, the implementation of the neural network inference process by the analog device depending on the metadata.

Certain aspects of the present disclosure generally relate to electronic circuits and, more particularly, to techniques and apparatus for signal amplification. One example apparatus generally includes: a current sensor configured to sense a current associated with an amplifier; and a voltage sensor configured to sense a voltage associated with the amplifier. The apparatus may also include a logic circuit configured to: detect a first over-current condition associated with the amplifier based on the current; detect a first over-voltage condition associated with the amplifier based on the voltage; and adjust an amplification gain to yield a first adjusted gain level for an input signal based on detection of the first over-current condition and the first over-voltage condition, wherein the amplifier is configured to amplify the input signal based on the first adjusted gain level.

An elongated hexagonal decorative light system comprises a plurality of light panel assemblies, each light panel assembly having an elongate hexagonal shaped base defining two electrical receptacles at each end of the elongate base. A printed circuit assembly is mounted to the base and has a plurality of light emitting diodes populated thereon with electronic circuitry for selectively illuminating the light emitting diodes, and a prismatically shaped lens affixed to the base. A controller has a printed circuit assembly mounted wherein the printed circuit assembly includes the circuitry and logic for controlling the plurality of light panels. The controller includes a signal cord extending therefrom and terminating with an electrical connector receivable in the light panel receptacles. A plurality of connector cables, each having a multi-lead cable segment terminated at each end with an electrical plug receivable in the electrical receptacles in the light panel assemblies.

A system includes a wearable device including a base adapted to be connected to skin of a patient. An electrochemical sensor is connected to the base. The electrochemical sensor includes a sensor medium responsive to lactate. The electrochemical sensor is in fluid connection with one or more transdermal fluid paths in connection with the base. The one or more transdermal fluid paths are configured to be placed in fluid connection with the subdermal fluid of the patient. The system further includes electronic circuitry including at least one measurement system in operative connection with the electrochemical sensor to measure a variable providing a measure of change in at least one property of the sensor medium which is dependent upon the presence of lactate in the subdermal fluid.

The invention relates to the technical field of electronic circuits, in particular to a magnet coil power supply system, a control method and electronic equipment. The magnet coil power supply system comprises a subsystem and a control module. The subsystem comprises a plurality of sub-modules and a magnet coil sub-module; the plurality of sub-modules are arranged in an array in the form of M rows and N columns; the sub-module comprises a first capacitor and a driving module; the first capacitor is connected in parallel with the driving module; the control module is connected with the driving module; the control module is configured to generate M * N groups of driving pulse signals for the plurality of sub-modules by adopting a carrier phase-shifting modulation mode; for the ith row of sub-modules in the array, the corresponding driving pulse signals have the same phase offset relative to the driving pulse signals of the first row of sub-modules, and the offset of the phase offset is (i-1) / M carrier periods. The power supply voltage and the working current of the magnet coil can be greatly improved by arranging the plurality of sub-modules in an array, and current ripples can be reduced and the control efficiency can be improved by a phase shift control strategy.

Electronic device docking station (“docking station”) with cooling system for heat dissipation of docked electronic device, and related methods of docking an electronic device into the docking station. The docking station includes a heat dissipation device in the form of a metal plate that extends from a rear member of the housing of the docking station. The metal plate is configured to be received (either fully or partially) within an internal cavity of an electronic device when the electronic device is disposed on the platform of the housing to be docked in the docking station. In this manner, when the electronic device is disposed on the platform of the docking station housing and docked to the docking station, the metal plate is located in proximity to and thermally coupled to electronic circuits within the electronic device that generate heat. The metal plate dissipates heat generated by the docked electronic device.

Various analyte sensor systems for controlling activation of analyte sensor electronics circuitry are provided. Related methods for controlling analyte sensor electronics circuitry are also provided. Various analyte sensor systems for monitoring an analyte in a host are also provided. Various circuits for controlling activation of an analyte sensor system are also provided. Analyte sensor systems utilizing a state machine having a plurality of states for collecting a plurality of digital counts and waking a controller responsive to a wake up signal are also provided. Related methods for such analyte sensor systems are also provided. Systems for controlling activation of analyte sensor electronics circuitry utilizing a magnetic sensor are further provided. One or more display device configured to display one or more analyte concentration values are also provided.

The present technology relates to an electronic circuit, a solid-state imaging device, and a readout circuit that make it possible to reduce power consumption. An electronic circuit comprises a push-pull buffer circuit, the push-pull buffer circuit including a switch for performing intermittent signal output and a bypass current circuit for forming a bypass current path when the signal output is temporarily halted. The present technology can be applied to solid-state imaging devices.

The utility model belongs to the technical field of electronic circuits, and discloses a simple circuit capable of generating negative precision voltage reference and resisting high temperature of 200 DEG C. The simple circuit comprises a positive reference voltage source U1, a capacitor C1 and an operational amplifier U2, the output end of the positive reference voltage source U1 is connected to the inverted input end of the operational amplifier U2 through the isolation resistor R, the input end of the positive reference voltage source U1 is connected to a VCC power supply, and the GND pin of the positive reference voltage source U1 is connected to the output end of the operational amplifier U2; a pin 3 of the positive reference voltage source U1 is connected to a VCC power supply; a pin 3 of the positive input end of the operational amplifier U2 is grounded, and a pin 2 of the operational amplifier U2 is connected with a negative power supply; the two ends of the capacitor C1 are connected with the floating ground end of the positive reference voltage source U1 and the output end of the positive reference voltage source U1. According to the utility model, fewer components are used, and the precision is higher; the circuit has flexibility, and different negative precision voltage references can be generated by selecting different reference voltage sources and amplifier combinations; and the negative voltage reference generated by the module at the high temperature of 200 DEG C still has very good temperature stability.

The invention relates to an electronic circuit and a method for suppressing offset variations in a buffer.

The invention discloses a multi-mode light-supplementing sleep-aiding control circuit, device and system integrating sound, light and smell, and a control method, and relates to the technical field of electronic circuits. The circuit comprises a main control module, a light supplementing module, a sleep-aiding lamplight module, an environment sensing module, an aromatherapy module, a power amplifier loudspeaker module and the like, low-blue-light soft and brightness-adjustable illumination is output through the light supplementing module, and the problems of too strong blue light, screen stroboflash and reading fatigue when an intelligent terminal is used are solved. The sleep-aiding light module can be adjusted to warm color temperature, the mood is relaxed, and illumination secreted by melatonin is not damaged. The environment sensing module collects environment light and proximity distance information in real time, so that the equipment can intelligently adjust the light supplementing brightness and the sleep-aiding lamp mode; hot fumigation closed-loop control is adopted for the aromatherapy module, constant-temperature adjustment is achieved through temperature sampling, and volatilization of sleep-aiding fragrance is more stable and safer; the power amplifier loudspeaker module provides stable output for white noise, natural sound and rhythmic respiration guiding sound, and provides reliable acoustic assistance for sleep adjustment.

A circuit (1) is specified, comprising a power thyristor device (2), in which-a gate (21) of the power thyristor device (2) is connected to an internal reference (10) of the circuit (1) via a first switch (31); and-the cathode (22) of the power thyristor device (2) is connected to an internal reference (10) of the circuit (1) via a second switch (32). Further, a method of operating a circuit (1) is specified.