2938 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.

An electric wheel controller and methods for operating and manufacturing an electric wheel controller are disclosed. Embodiments include a controller forming a structural and / or load bearing component of the vehicle suspension system. Embodiments of the controller can be mounted to a wheel assembly, and in some embodiments the controller is a suspension knuckle. Embodiments include a controller with a cavity and electronic circuitry submerged in liquid coolant. During operation the coolant can absorb heat from the immersed circuitry. In some embodiments the coolant transitions to a gas and / or vapor, and can move to an upper portion of the cavity. When the coolant contacts the cooler surfaces of the cavity the coolant can transition back to a liquid and return to a pool of liquid coolant in which the circuitry is immersed. A heat sink can be connected to the controller, such as by laser soldering.

The present subject relates to a method for proving a statement describing a functionality of an electronic circuit, using a quantum computer and a proof assistant.The procedure comprises: encoding a current proof state into a vector of real numbers of a fixed length, where the current proof state defines a task to prove at least part of the statement; encoding the vector into a quantum state of a quantum system of the quantum computer; using the quantum state as an input quantum state by a quantum machine learning model to provide an output quantum state, the measurement of which constitutes a proof step for the defined task; measuring the output quantum state, thereby obtaining the proof step for the defined task; providing the proof step to the proof assistant; and receiving a next proof state from the proof assistant in response to the provision of the proof step.

The disclosure relates to an electronic circuit to verify the integrity of a switch. The circuit comprises a voltage comparator and decoupling switch. The decoupling switch configured receive the driving signal having a first logic value to enable the monitoring of the comparison voltage and is configured to receive the monitoring enable signal having a first logic value to command the opening of the decoupling switch. The electronic circuit is configured to generate the output monitoring signal having a first logic value in an event that the switch is an open circuit and having a second logic value in an event that the switch is a short circuit.

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 provides a circuit board line crosstalk checking method. The method comprises the following steps of: acquiring an electronic circuit diagram file by using a processor; selecting a target power line segment and a target signal line segment from the plurality of lines; executing a crosstalk check process including: determining whether the target power line segment and the target signal line segment intersect according to the coordinate information of the target power line segment and the target signal line segment; according to the coordinate information, whether the distance between the target power line segment and the target signal line segment is smaller than a first preset interval is judged; when the distance is smaller than a second preset distance, judging whether the target power line segment and the target signal line segment are in a parallel state or not; and marking at least one of the target power line segment and the target signal line segment as a crosstalk line segment when a result of any one of the plurality of judgments is true. According to the technical scheme provided by the invention, the problem that a power line possibly generates crosstalk on a signal line can be eliminated, and meanwhile, the inspection efficiency is improved and omissions are reduced.

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.

According to one embodiment, electronic circuitry, includes a first radiating element; a second radiating element; a first circuit element including a first end and a second end, the first end being connected to one end of one of the first radiating element or the second radiating element; and a second circuit element connected between the second end of the first circuit element and one end of another of the first radiating element or the second radiating element.

A radiation imaging apparatus includes the following, a radiation detector that detects radiation; an electronic circuit; a plurality of electric wiring that connects the electronic circuit; a supporter that supports the radiation detector; and a case that includes a front surface portion in which radiation is incident and a rear surface portion facing the front surface portion with the radiation detector in between. The case stores the radiation detector, the electronic circuit, the plurality of electric wiring and the supporter. The plurality of electric wiring is positioned between the supporter and the rear surface portion, and at different positions in a thickness direction of the radiation imaging apparatus. The plurality of electric wiring include GND wiring that is used for a power supply. The GND wiring is positioned in a position farther from the radiation detector than other wiring in the thickness direction.

A series-type hybrid circuit breaker to provide protection against short circuit faults in DC or AC power circuits. A series-type hybrid circuit breaker (SHCB) forces a fault current into a high-frequency AC current with zero crossings and allows a mechanical circuit breaker to disconnect the faulty branch. The SHCB injects a transient counter voltage pulse via a pulse transformer into the main power loop upon detection of an overcurrent condition and forces the fault current to change its original direction and cross zero to a negative peak value. A generation power electronic circuit on the primary side of the transformer controls the discharge of a capacitor to generate the counter voltage pulse during the first phase of each switching cycle of the fault interruption process. The power electronic circuit then changes the polarity of the injected secondary voltage and forces the fault current to change direction and cross zero again.

A mask-based testing system for detecting a biomarker received from lungs and airways of a test subject includes an exhaled breath condensate (EBC) collector integrated into an inside of a face mask worn by the test subject. The EBC collector converts breath vapor received from the lungs and airways of the test subject into a fluid biosample. A biosensor is fixed to the inside of the face mask for receiving a fluid biosample from the EBC collector and testing the fluid biosample for a target analyte. The biosensor generates a test signal dependent on at least the presence and absence of the target analyte in the fluid biosample. An electronic circuit is fixed to an outside of the mask for receiving the test signal, determining from the test signal a test result signal depending on detecting or not detecting the target analyte, and transmitting the test result signal to a remote receiver.

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 belongs to the technical field of electronic circuits, and provides a negative voltage charge pump circuit, a switching power supply converter and electronic equipment. A reference voltage generation module, a comparison module, a fourth driving module, a fifth power tube, a sixth power tube and a seventh power tube are additionally arranged on an existing charge pump. The reference voltage generation module is used for generating third reference voltage, namely threshold voltage when the negative-voltage charge pump circuit enters the light load, then the comparison module is used for comparing the third reference voltage with error voltage output by the error amplifier, and whether the negative-voltage charge pump circuit enters the light-load working condition or not is judged; when the negative-voltage charge pump circuit enters a light-load working condition, the large-size power tube and the driving module thereof are closed, and only the small-size power tube works, so that other performances of the negative-voltage charge pump circuit are ensured, the working current of the negative-voltage charge pump circuit in the light-load state is greatly reduced, and the working efficiency of the negative-voltage charge pump circuit is improved. Therefore, the conversion efficiency of the charge pump circuit in light load is 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 is suitable for the technical field of electronic circuits, and provides a wide-load-capacitance low-dropout linear regulator circuit, a power supply device and electronic equipment. The wide load capacitance low dropout linear regulator circuit comprises a bias module, a first operational amplifier module, a second operational amplifier module, a third operational amplifier module, a first compensation module and a second compensation module, and the first operational amplifier module is electrically connected with the bias module, the second operational amplifier module and the first compensation module. The third operational amplifier module is electrically connected with the second operational amplifier module, the second compensation module and the first operational amplifier module. A first zero point generated by the first compensation module is used for compensating the second pole, and a second zero point generated by the second compensation module is used for compensating the third pole. Therefore, according to the design architecture of the wide-load-capacitance low-dropout linear voltage regulator circuit provided by the embodiment of the invention, the two zero points effectively compensate the corresponding poles, the phase margin of the circuit is remarkably improved under the wide-range load capacitance, and the stability of the circuit is enhanced.

The invention belongs to the technical field of electronic circuits, and particularly relates to an oscillator circuit for a PWM controller. Comprising an oscillator module which comprises a feedback loop and a current detection circuit; the hiccup module is used for gating and outputting an input signal by a data selector according to the level of the input PWM logic control signal so as to control the on-off of a transmission gate, establishing a charging and discharging process and providing a delay starting function for the oscillator module; and the jittering frequency module outputs current sources Iref0 of different sizes by performing combined gating on a current source I'ref and current sources I1-I4, outputs four paths of current sources Iref1-Iref4 of different sizes through a current mirror array mirror image, and provides charging and discharging current for the oscillator module and the hiccup module. By dynamically adjusting the PWM frequency, the switching frequency is matched with the load requirement, the invalid switching frequency is reduced, and the power consumption is greatly reduced.

The embodiment of the invention provides a DC bus ground insulation degree detection method and device and a medium, and is applied to the technical field of electronic circuits. The method comprises the following steps: acquiring sampling signals of a detected loop corresponding to a target direct-current bus under excitation signals of different frequencies; wherein the sampling signal comprises a voltage response signal and a current response signal of the detected loop; performing frequency domain analysis based on the sampling signal to obtain an amplitude and a phase corresponding to each frequency component; based on the amplitude and the phase of each frequency component, performing fitting calculation to obtain a capacitance value of the measured loop; the capacitance value represents a real ground capacitance value of the target DC bus; and obtaining a ground insulation degree detection result of the target DC bus based on capacitance value analysis. The technical effect of improving the insulation degree detection accuracy is achieved.

The utility model relates to the technical field of electronic circuits, and discloses a printed circuit board with connectors arranged on two sides and an electronic device, the printed circuit board with connectors arranged on two sides comprises a printed circuit board and at least one pair of connectors, each pair of connectors comprises a first connector and a second connector which are oppositely arranged on two sides of the printed circuit board, the surface of the top layer of the printed circuit board is provided with first bonding pad areas, first wiring sets and first via hole sets which are in one-to-one correspondence with the first pin sets, the two first via hole sets are located between the two corresponding first bonding pad areas, and the first wiring sets are connected with the corresponding first bonding pad areas and the first via hole sets; the surface of the bottom layer of the printed circuit board is provided with second bonding pad areas, second wiring sets and second via hole sets which are in one-to-one correspondence with the second pin sets, the two second via hole sets are located on the outer sides of the two corresponding second bonding pad areas, and the second wiring sets are connected with the corresponding second bonding pad areas and the second via hole sets. According to the scheme, the problem that circuit board layout is difficult is solved.

The invention discloses an electronic circuit energy efficiency optimization design method based on a genetic algorithm, and the method comprises the following steps: S1, carrying out the modeling of a to-be-optimized electronic circuit, forming a mixed type chromosome, and initializing a genetic algorithm population; s2, constructing a fitness function based on a genetic algorithm population; s3, executing a selection operation on the current population, and replacing a parent by a child with high adaptability; s4, performing crossover operation on the parent individuals to generate new offspring individuals; s5, performing mutation operation on the offspring individuals to form new individuals; s6, performing circuit simulation on the new individual after the genetic manipulation is executed, and inputting a simulation result into a fitness function for evaluation; s7, updating the population according to the fitness score, and entering next-generation evolution; and S8, configuring an individual parameter which meets a convergence condition and has the highest output fitness score. Based on a local competition algorithm, a double-layer block recombination strategy and a Pareto frontier algorithm are fused, and energy efficiency optimization of the electronic circuit is achieved.

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.

[Problem] To improve the partial discharge resistance of an insulating substrate for an electronic circuit that uses an aluminum nitride sintered substrate. [Solution] Provided is an aluminum nitride sintered substrate containing zirconium-containing particles therein, wherein the aluminum nitride sintered substrate has a composition in which the Zr / Al molar ratio is 0.0017-0.0665, and the region from the end surface in the thickness direction to at least a depth of 10.0 μm is a zirconium-deficient surface layer in which the number density of the zirconium-containing particles in a cross section parallel to the thickness direction is 6.0 / 540μm2 or less.

An electronic component device, includes: a redistribution layer, an electronic circuit chip and an optical circuit chip disposed on the redistribution layer, and a first sealing layer sealing the electronic circuit chip and the optical circuit chip, wherein the first sealing layer has an opening on an opposite side from a side of the redistribution layer, and a position of the opening at least partially overlaps with a position of the optical circuit chip.

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.

An electromagnetic shielding cap for an electronic circuit includes a main surface and four lateral surfaces. One of the lateral surfaces has, at its base, soldering zones. Each soldering zone is delimited by openings. An electronic circuit, particularly an optical transmission and / or reception circuit, includes a chip bonded to a first main surface of a substrate locally covered by metal pads. The electromagnetic shielding cap is mounted over the circuit. The cap and the substrate are assembled to each other by solder joints, where each solder joint is soldered to one of the metal pads and to one of the soldering zones.

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.

An electronic circuit comprises multiple analog-to-digital converters (ADCs), clock circuitry, and calibration circuitry. The clock circuitry is configured to provide clock signals to the multiple ADCs to advance the multiple ADCs through time-interleaved analog-to-digital (A / D) conversions. The calibration circuitry is configured to determine a magnitude of timing skew error between any two of the clock signals; apply a dither sequence to a first clock signal of the any two clock signals, wherein the first clock signal is applied to a first ADC; determine a polarity of the timing skew error by determining a polarity of gain experienced by the dither sequence from the time-interleaved A / D conversions.

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.