Patents
Literature
10338 results about "Hemt circuits" patented technology
Efficacy Topic
Property
Owner
Technical Advancement
Application Domain
Technology Topic
Technology Field Word
Patent Country/Region
Patent Type
Patent Status
Application Year
Inventor
Method and system for active battery pack balancing
In a described example, a system includes a bus, a primary coil, first battery terminals, and second battery terminals. A first circuit is coupled between the bus and the primary coil. A first secondary coil is DC-isolated from the primary coil. A second circuit is coupled between the first secondary coil and the first battery terminals. A second secondary coil is DC-isolated from the primary coil. A third circuit is coupled between the second secondary coil and the second battery terminals. A controller is configurable to control the second circuit to transfer energy from the first battery terminals through the first secondary coil to the primary coil and control the first and third circuits to transfer energy from the primary coil to the second secondary coil and provide energy to the second battery terminals.
Owner:TEXAS INSTRUMENTS INC
A driving circuit and a driving method thereof, a display panel, and a display device
Embodiments of the present application provide a driving circuit and a driving method thereof, a display panel and a display device. The driving circuit is used for driving a pixel circuit. The pixel circuit comprises a driving transistor, a gate reset transistor, a data write transistor and a threshold value capture transistor which are electrically connected with the driving transistor. The driving circuit comprises a plurality of cascaded shift register units. The shift register unit comprises a first type signal output module and a second type signal output module. The output end of the first type signal output module is electrically connected with the gate of the gate reset transistor and / or the threshold value capture transistor. The output end of the second type signal output module is electrically connected with the gate of the data write transistor. The present application can reduce the number of peripheral driving circuits required by the pixel circuit, which is conducive to realizing narrow frame and low power consumption of the display panel.
Owner:WUHAN TIANMA MICRO ELECTRONICS CO LTD
Electronic device and method for controlling setting of antenna in electronic device including multiple antennas
According to various embodiments, an electronic device may include multiple antennas, at least one antenna tuning circuit connected to at least one antenna among the multiple antennas, and at least one communication processor, wherein the at least one communication processor receives, through a first antenna among the multiple antennas, a signal transmitted from a base station based on multiple-input and multiple-output (MIMO), receives, through a second antenna among the multiple antennas, a signal transmitted from the base station based on the MIMO, and when a strength of a first signal received through the first antenna or a strength of a second signal received through the second antenna is equal to or greater than a first threshold value, determines whether an imbalance condition of the first signal and the second signal is satisfied, and adjusts, when the imbalance condition is satisfied, a setting value of the at least one antenna tuning circuit so as to reduce a difference between the strength of the first signal and the strength of the second signal. Various other embodiments are possible.
Owner:SAMSUNG ELECTRONICS CO LTD
Method for operating an ultrasonic measuring device, and an ultrasonic measuring device
ActiveUS12644742B2Volume/mass flow measurementTesting/calibration for volume flowTransducerHemt circuits
A method for operating an ultrasonic measuring device, which includes: an arrangement of ultrasonic transducers for emitting and receiving ultrasonic signals along at least two signal paths through a fluid, wherein the arrangement is held by a holding apparatus having at least one wall, wherein sections of the signal paths run through at least one of the at least one wall, wherein signal path sections of at least two signal paths in the fluid are of different length; and an electronic measuring / operating circuit configured to perform the method of, in a first method step, comparing intensities of ultrasonic signals along signal paths having signal path sections of different length in the fluid and, in a second method step, determining a damping property of the fluid and an acoustic coupling property between the wall and the fluid therefrom.
Owner:ENDRESS HAUSER FLOWTEC AG
X-ray imaging apparatus and power distribution unit therefor, wireless power transfer device
PendingCN122338979AReduce capacity requirementsAchieve charging and discharging at the same timeHemt circuitsPower grid
This disclosure provides an X-ray imaging device and its power distribution unit and wireless power transmission device. The power distribution unit includes: a first rectifier circuit, a charging circuit, an energy storage module, and a first inverter circuit; the input terminals of both the first rectifier circuit and the charging circuit are connected to the external power grid; the output terminal of the first rectifier circuit is connected to the input terminal of the first inverter circuit, and the output terminal of the first inverter circuit is connected to the wireless power transmission device of the X-ray imaging device; the output terminal of the charging circuit is connected to one end of the energy storage module, and the other end of the energy storage module is connected to the input terminal of the first inverter circuit. In this disclosure, the power supply from the power grid and the power supply from the energy storage module are in parallel, which can reduce the imaging device's demand on the power grid capacity. Since the charging circuit only participates in the charging process of the energy storage module and does not participate in the discharging process of the energy storage module, it can realize simultaneous charging and discharging of the energy storage module, and there are no excessive requirements on the power level of the charging circuit, which can reduce the cost of the charging circuit.
Owner:WUHAN UNITED IMAGING HEALTHCARE CO LTD
Amplifier gain shaping control
Amplifiers with new circuit topologies for gain shaping and gain control are described herein. An example amplifier circuit with gain control includes a differential transistor pair, a main transistor pair coupled to the differential transistor pair, an auxiliary transistor pair coupled to the differential transistor pair, and a resistive impedance coupled between base terminals of the auxiliary transistor pair. The resistive impedance can include a pair of matched resistors coupled between base terminals of the auxiliary transistor pair. The amplifier can also include a capacitor coupled from a virtual ground node between the pair of matched resistors to ground. The amplifier circuits described herein can present a preferred gain response as compared to other amplifiers, at both midband and peaking frequencies. The amplifier circuits also offer additional options for control of gain at midband frequencies, among other benefits.
Owner:MACOM TECH SOLUTIONS HLDG INC
A state switching method, apparatus and electronic device
This disclosure provides a state switching method, apparatus, and electronic device. The state switching method includes: generating and maintaining a state switching signal when a preset state switching condition is met; switching the state of a target object using the state switching signal; calculating the time interval between the current time and the end time of a synchronization alignment signal; the synchronization alignment signal is a signal applied to the target object earlier than the state switching signal; and ending the state switching signal when the time interval meets a preset condition, thus completing the state switching of the target object; the preset condition includes the time interval being an even multiple of a first clock cycle. This embodiment ensures that the output signal of the target object after state switching is synchronized with the synchronization alignment signal, solving the problem of timing disorder and improving circuit performance.
Owner:SANECHIPS TECH CO LTD
Discharge detection unit
PendingUS20260153552A1Testing dielectric strengthNoise figure or signal-to-noise ratio measurementLow frequency bandHemt circuits
A discharge detection unit 1 that can detect noise superimposed on a voltage or current of an electric circuit to which the load is connected by being electrically connected to an electric circuit to which a load is connected, the discharge detection unit includes a filter unit 11 that can output a waveform of passed noise in a high frequency band without passing noise at a commercial frequency band and in a low frequency band by cutting noise of a predetermined frequency or lower superimposed on the voltage or current of the electric circuit, a counting unit 12 that can calculate the number of waveform detections in a predetermined time from a waveform passed through the filter unit, and an arithmetic processing unit 13 that can determine presence or absence of noise caused by discharge in the electric circuit using the number of times detected calculated by the counting unit.
Owner:NITTO KOGYO KK
Liquid dispensing device
To provide a liquid dispensing device that can reduce the risk of degrading the image quality formed on the medium and the risk of impairing convenience. [Solution] A liquid dispensing device having a sink circuit that switches the impedance value between a first wiring through which a reference voltage signal supplied to the other end of a first piezoelectric element and the other end of a second piezoelectric element propagates, and a second wiring through which a signal with a lower potential than the reference voltage signal propagates, according to the determination result of the state of a plurality of dispensing units in a state determination circuit, the sink circuit having a first mode in which the impedance value is a first impedance value, a second mode in which the impedance value is a second impedance value smaller than the first impedance value, and a third mode in which the impedance value is a third impedance value smaller than the second impedance value.
Owner:SEIKO EPSON CORP
A pressure signal fitting method and apparatus
ActiveCN116593041BFluid pressure measurement using ohmic-resistance variationForce measurementElectrical resistance and conductanceElectronic switch
The application provides a pressure signal fitting method and device, the method comprises: applying pressure to each sensing point in a pressure sensor, measuring the relationship between pressure and resistance of each sensing point, and integrating to obtain the pressure-resistance relationship; the pressure-resistance relationship is corrected through a numerical filtering algorithm, and the corrected pressure-resistance relationship is fitted to obtain an optimized pressure-resistance relationship; the switching of the voltage sensing circuit sensing points is carried out through an integrated analog electronic switch, the voltage of the stressed multiple array sensing points is measured; the resistance of the multiple array sensing points is calculated according to the measured voltage combined with the acquisition circuit; and the pressure of the multiple array sensing points is calculated through the optimized pressure-resistance relationship; based on the area of the stress area and the non-stress area of the multiple array sensing points, the actual stress of the multiple array sensing points is calculated through the relationship between force and pressure.
Owner:KINGFAR INTERNATIONAL INC
Three-dimensional integrated circuit having ESD protection circuit
An integrated circuit including: two or more substrates stacked one over another and including first and second substrates having a P-type doping, and third and fourth substrates having an N-type doping; the first substrate including a first dielectric isolation structure electrically separating the first substrate into first and second portions; the second substrate including a second dielectric isolation structure electrically separating the second substrate into first and second portions a set of electrical components on one or more of the two or more substrates, and configured to form a circuit, the circuit comprising an internal ground node; a ground reference rail electrically connected to the first substrate and the second substrate and free from being electrically connected to the third substrate and the fourth substrate; and an electrostatic discharge (ESD) protection circuit electrically coupled between the internal ground node and the ground reference rail.
Owner:TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD
Power supply and operation method thereof
A power supply includes a converter circuit, a switching circuit and a control circuit. The converter circuit includes a transformer, a primary side switch and a secondary side switch. The switching circuit includes first and second capacitors, first and second sets of switches. In a first phase, the primary side switch is in the conduction state, causing a magnetizing inductor of the transformer to store energy. In a second phase, the primary side switch is in the off state, causing the magnetizing inductor to release the energy. In a first mode of the second phase, a first amount of the energy is transferred through the first set of switches to the first capacitor. In a second mode of the second phase, a second amount of energy is transferred to the second capacitor through the second set of switches.
Owner:CHICONY POWER TECH CO LTD
A state detection method and device, electronic equipment and storage medium
This application provides a state detection method, apparatus, electronic device, and storage medium. The method includes: responding to a first controller transmitting first data to a second controller via a communication channel, receiving second data transmitted by the second controller via the communication channel; counting the number of times the first controller transmits the first data to obtain first count data; counting the number of times the first controller receives the second data to obtain second count data; and determining the operating state of the first controller and the second controller based on the first count data and the second count data. Using this method, state detection of the first and second controllers can be achieved through a single communication channel between the first and second controllers, saving on internal integrated circuitry. 2 C resources are low-cost.
Owner:LCFC HEFEI ELECTRONICS TECH
Temperature sensing device, temperature sensing method and system on chip
Owner:SAMSUNG ELECTRONICS CO LTD
Low power signal amplitude detection and gain control circuit, method and applications
The application provides a low-power signal amplitude detection and gain control circuit, method and application. The low-power signal amplitude detection and gain control circuit comprises: a controllable gain amplification module, which is used for receiving and amplifying an input signal; a pulse generation and counting module, which is connected with an output end of the controllable gain amplification module and is used for converting the amplified signal into a pulse and outputting a counting value; and a control module, which is connected with the pulse generation and counting module and the controllable gain amplification module respectively; wherein the control module is used for judging the input signal amplitude according to the counting value and maintaining the counting value in a predetermined counting range corresponding to a target signal amplitude by adjusting the gain of the controllable gain amplification module. In the application, the control module analyzes the pulse counting signal amplitude and compares the signal amplitude with an internal predetermined counting range, dynamically adjusts the gain of the amplification module, thereby stabilizes the circuit output in a desired amplitude interval and avoids the phenomenon of "wrong wave".
Owner:SHENZHEN LUOHU PEOPLELS HOSPITAL
Capacitor voltage balancing for multi-level LLC resonant converter
PendingUS20260149370A1Efficient power electronics conversionDc-dc conversionCapacitor voltageHemt circuits
In an aspect of the disclosure, an operation method, for balancing voltage of capacitors of a bridge circuit of a multi-level LLC resonant converter, includes: measuring voltages of the capacitors of the bridge circuit, an output voltage and an output current of an output load the multi-level LLC resonant converter, and an input voltage of the bridge circuit; selecting a voltage-level zone of a required output voltage of the bridge circuit according to the output voltage of the output load, and the input voltage of the bridge circuit; selecting a circuit mode, with a highest value of the required output voltage; and outputting PWM signals corresponding to the circuit mode, with a switching frequency, to switches of the plurality of capacitor-switch modules.
Owner:LITE ON SINGAPORE PTE LTD +1
Double-row staggered arrangement multifunctional connector and use method
ActiveCN116315769Breduce occupancyreduce manufacturing costLine/current collector detailsCoupling contact membersHemt circuitsStructural engineering
Owner:GUANGDONG HONGQIN COMM TECH CO LTD
Power source control device, DC / DC converter, and vehicle
Provided is a power source control device for a DC / DC converter including a high-side transistor, a low-side transistor, and an inductor, the power source control device including a first error amplifier configured to receive a first reference voltage and a feedback voltage based on an output voltage of the DC / DC converter, a second error amplifier configured to receive an output of the first error amplifier and a signal indicating information regarding a current flowing through the inductor, a first comparator configured to receive an output of the second error amplifier and a ramp voltage, a switching control unit configured to perform switching control of the high-side transistor and the low-side transistor according to an output of the first comparator, and a clamp circuit configured to clamp a second amplifier output voltage outputted from the second error amplifier, to a predetermined clamp voltage.
Owner:ROHM CO LTD
Buck converter circuit with flying capacitor
PendingUS20260171916A1Ac-dc conversionApparatus without intermediate ac conversionCapacitanceControl system
A buck converter circuit comprising a pre-charging switch, a first switching element, a second switching element, a third switching element, a fourth switching element, a flying capacitor, a voltage supply node, a first flying capacitor node, a second flying capacitor node, a switch node and a control system. The voltage supply node, the pre-charging switch and the first flying capacitor node are sequentially connected in series. The voltage supply node, the first switching element and the first flying capacitor node are sequentially connected in series. The first flying capacitor node, the flying capacitor, the second flying capacitor node and the fourth switching element are sequentially connected in series. The first flying capacitor node, the second switching element, the switch node, the third switching element and the second flying capacitor node are sequentially connected in series. The control system is configured for executing a pre-charging process and a cyclic converting process.
Owner:ABB E-MOBILITY BV
A continuous resonator network computing method based on resistive memory arrays
PendingCN122266418ALogic circuits characterised by logic functionDigital storageTime domainAnalogue computation
The application discloses a continuous resonator network computing method based on a resistive memory array, and belongs to the fields of semiconductors, analog computing and integrated circuits. The application sequentially decomposes resonator network computing into three parts of logic computing, matrix-matrix-vector multiplication operation and sign taking computing, and sequentially connects a feedback loop formed by a logic element, a resistive memory array and an operational amplifier to realize hardware, takes a voltage corresponding to a to-be-decomposed hyper vector as input, and obtains a voltage of a corresponding decomposition signal at an output end after the circuit is stable, so that self-convergent resonator network computing in a continuous time domain is realized. Compared with existing resonator network computing implementation schemes, the application can fully exert the performance advantages of analog computing, does not need discrete iteration and data transfer, thereby reducing hardware overhead and operation complexity, and greatly improving speed, energy efficiency and area efficiency.
Owner:PEKING UNIV
Doherty amplifier
PCT designated stageWO2026126499A1Amplifier modifications to raise efficiencyAudio power amplifierInput impedance
A Doherty amplifier according to the present disclosure comprises a main amplifier, an auxiliary amplifier, a distribution circuit that distributes signals to the main amplifier and the auxiliary amplifier, and a phase compensation circuit. The main amplifier has a first input matching circuit and a plurality of main amplification stages. The auxiliary amplifier has a second input matching circuit and a plurality of auxiliary amplification stages. The distribution circuit has a first line connected to the first input matching circuit and a second line connected to the second input matching circuit. The electrical length of the first line is such that the input impedance of the first line is higher than the characteristic impedance of the first line and the imaginary component is less than 10% of the real component when a small signal is input. The electrical length of the second line is such that the input impedance of the second line is higher than the characteristic impedance of the second line and the imaginary component is less than 10% of the real component when a small signal is input. The phase compensation circuit is provided in an inter-stage matching circuit of the plurality of main amplification stages or the plurality of auxiliary amplification stages.
Owner:MITSUBISHI ELECTRIC CORP
A high-precision testing device for switching power supply
ActiveCN224399570UElectrical measurement instrument detailsPower supply testingSignal conditioningHemt circuits
The utility model discloses a kind of test devices, belong to switching power supply technical field, specifically related to a kind of switching power supply high-precision test device, comprising: signal acquisition module, signal conditioning module, AD conversion module and control module;The utility model processes the voltage signal and current signal of acquisition by signal conditioning module, to further guarantee the accuracy of each acquisition signal, and can inhibit the generation of noise and error, while signal conditioning module in the signal of incoming acquisition is handled, measured signal is converted into digitalizable voltage signal, and according to different signal passage gear attenuation amplitude, gain is carried out respectively by program-controlled gain circuit, finally the component of aliasing frequency in the level signal of output is filtered out by anti-aliasing filter circuit, eliminate aliasing in band and prevent dynamic performance reduction;So the utility model can carry out high-precision monitoring according to different signals, to guarantee the stability and accuracy of test device work.
Owner:WUXI OU RUIJIE ELECTRONIC TECH CO LTD
Light emitting pixel circuit comprising small number of transistors driven by pulse width modulation performing internal compensation of threshold voltage
A pixel circuit includes a first transistor, a second transistor for applying a data voltage to the first transistor, a third transistor for diode-connecting the first transistor, a fourth transistor for applying a first power voltage to a first electrode of the first transistor, a fifth transistor for connecting a second electrode of the first transistor and a fourth node, a sixth transistor for applying an initialization voltage, a seventh transistor, an eighth transistor for applying the data voltage to a fifth node in response to a second scan signal, a tenth transistor for applying a second power voltage to the fifth node, a twelfth transistor for applying the initialization voltage to the fourth node and a light emitting element. A sweep signal is applied to a control electrode of the first transistor, and the sweep signal is a global signal which has same timing across at least two pixel-rows.
Owner:SAMSUNG DISPLAY CO LTD
Method for manufacturing a multilayer printed circuit board
This invention relates to a method for manufacturing a multilayer printed circuit board, comprising: a step of preparing a first circuit board; a step of preparing a metal laminate; a step of stacking the first circuit board on both sides of a carrier film to form a first multilayer laminate; a step of stacking the metal laminate on both sides of the first multilayer laminate to form a second multilayer laminate; a step of hot-pressing the second multilayer laminate; a step of forming a second circuit pattern on the metal foil of the hot-pressed second multilayer laminate to form a third multilayer laminate; and a step of separating the carrier film and the first circuit board from the third multilayer laminate to obtain two multilayer printed circuit boards having the first circuit board and the second circuit board stacked on them, respectively, and adjusting the MFR of the dried film to be greater than the MFR of the first thermoplastic resin layer.
Owner:DOOSAN CORP
Display device
The application provides a display device, which can simplify a power supply circuit of a backlight module and improve power supply efficiency of the display device. The display device comprises a display panel, a backlight module located at an incident light side of the display panel, a first light emitting element group and a second light emitting element group, wherein the power supply voltage of the first light emitting element group is not equal to that of the second light emitting element group, a backlight driving circuit comprising a transformer group, a primary winding, a first secondary winding and a second secondary winding, wherein a positive output end of the first secondary winding is electrically connected to the first light emitting element group, and a positive output end of the second secondary winding is electrically connected to the second light emitting element group, and at least one voltage conversion circuit, wherein the voltage conversion circuit and the second secondary winding are connected in series between a ground end and the second light emitting element group, and the voltage conversion circuit is used for voltage conversion on an input voltage.
Owner:HISENSE VISUAL TECH CO LTD
A wearable smart body temperature measurement device
The utility model relates to intelligent body temperature measurement technical field, especially a wearable intelligent body temperature measurement device, including bracelet body and watchband, the bracelet body includes the shell, the chamber is opened in the shell, be equipped with PCB board in the chamber, integrate rectifier circuit, super capacitor, lithium cell and communication module on the PCB board, be equipped with heat power generation unit below the chamber, the output end of heat power generation unit is connected to the input of rectifier circuit, the output of rectifier circuit is linked with super capacitor, the positive pole of super capacitor is accessed power input end of communication module with lithium cell, super capacitor still accesses the charging loop of lithium cell.
Owner:SANYA CENT HOSPITAL (THE THIRD PEOPLES HOSPITAL OF HAINAN PROVINCE)
Solar power supply circuit and environmental detection device
A solar power supply circuit and an environmental detection device are provided, the circuit includes a solar panel, an energy storage capacitor, a first low voltage detection chip, a voltage stabilization unit, and a processor chip. A positive terminal and a negative terminal of the solar panel are respectively electrically connected to two ends of the energy storage capacitor. The positive terminal of the solar panel is electrically connected to an input terminal of the first low voltage detection chip, an output terminal of the first low voltage detection chip is electrically connected to an input terminal of the voltage stabilization unit, an output terminal of the voltage stabilization unit is electrically connected to a positive electrode of a power supply of the processor chip. A problem of taking a longer time to enter a normal operation when the existing solar panel is low power can be solved.
Owner:FUJIAN TIANCHENG BAODE INTELLIGENT TECHNOLOGY CO LTD
Technologies for closed-loop qubit calibration
Technologies for closed-loop calibration of pulses to control spin qubits are disclosed. In an illustrative embodiment, calibration circuitry generates a pulse from a pulse generator. The pulse passes through a variable filter controlled by a filter parameter. The pulse is provided to a qubit, and the qubit is measured. Depending on the measured state of the qubit, the filter parameter can be changed. In this manner, the control pulses can be quickly and continuously calibrated. The calibration approach above offers several advantages. It can be implemented by circuitry close to the physical qubit, reducing opportunities for noise, cross-talk, etc. The calibration approach is scalable, as the calibration can be done quickly and continuously on a given qubit, and the same calibration circuitry can be multiplexed to interface with several qubits. The calibration circuitry can be on an integrated circuit, which can be in a cryogenic stage of the quantum computer.
Owner:INTEL CORP
Controller circuits for an isolated DC-DC converter, corresponding chipset, isolated DC-DC converter, switched-mode power supply and method of operation
An isolated DC-DC converter has a transformer with primary, secondary and auxiliary windings, and a secondary-sensing regulation architecture. A primary-side controller has a PWM generator, a wake-up pulse detector, a supply voltage generator and control circuitry. A secondary-side controller has an error amplifier, a switching detector, a wake-up pulse generator, a supply voltage generator and control circuitry. The primary-side controller and the secondary-side controller produce respective supply voltages in such a way that, when the DC-DC converter enters an idle state, the controllers enter respective sleep states wherein the PWM generator and the error amplifier are not supplied, while retaining the ability of producing and detecting a wake-up pulse when necessary.
Owner:STMICROELECTRONICS INT NV
True random number generators including ring oscillator circuits leveraging frequency and phase collapse events
True random number generators including ring oscillator circuits leveraging frequency and phase collapse events are described. An example ring oscillator circuit (ROC) includes a first oscillating loop comprising a first set of inverters, where the first oscillating loop is to oscillate at a first frequency and phase. The ROC further includes a second oscillating loop comprising a second set of inverters, which differs from the first set of inverters either in terms of a type of inverters or a number of inverters. The second oscillating loop is to oscillate at a second frequency and phase, different from the first frequency and phase. The ROC further includes a third oscillating loop to, as a result of mode switching from a first mode of operation into a second mode of operation, oscillate at a third frequency and phase, different from the first frequency and phase and the second frequency and phase.
Owner:MICROSOFT TECHNOLOGY LICENSING LLC