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2093 results about "Voltage regulator" patented technology

A voltage regulator is a system designed to automatically maintain a constant voltage level. A voltage regulator may use a simple feed-forward design or may include negative feedback. It may use an electromechanical mechanism, or electronic components. Depending on the design, it may be used to regulate one or more AC or DC voltages.

Linear closed-loop optimization method for semiconductor gas sensor with adjustable voltage dynamic compensation

The invention discloses a linearity closed-loop optimization method for a semiconductor gas sensor with adjustable voltage dynamic compensation, which relates to the technical field of gas detection and comprises the following steps: controlling the semiconductor gas sensor to start in a clean air environment, outputting an initial test voltage sequence through a voltage regulator, the method comprises the steps of collecting sensor reference resistance under different voltages, screening out initial working voltage with the minimum resistance fluctuation quantity, synchronously collecting initial environment temperature and humidity, and calibrating the sensor reference resistance based on preset temperature and resistance coefficients and humidity and resistance coefficients to obtain initial reference resistance. By dynamically adjusting the working voltage and combining real-time compensation on the environment temperature and humidity, the interference of environment factor fluctuation on the resistance characteristic of the sensitive material can be continuously counteracted, so that the linear relation between the output signal of the sensor and the target gas concentration is kept stable, the dynamic optimization of the linearity in a complex environment is realized, and the sensitivity of the sensor is improved. And more reliable basic data is provided for gas concentration detection in an industrial scene.
Owner:SHANXI TENGXIN SENSING TECH CO LTD

Control device for a switching voltage regulator and switching voltage regulator

A control device for a switching voltage regulator includes: a first detector of a first measurement signal indicative of a current flowing in a first side of the regulator, and providing a first comparison signal as a function of a first threshold; a second detector of a second measurement signal indicative of a current flowing in a second side of the regulator, and providing a second comparison signal as a function of a second threshold; a driving-signal generation circuit which generates a switching control signal from the first comparison signal to drive the switching circuit; a calibration circuit which receives an alert signal indicative of the first threshold, compares the alert signal and the second comparison signal, and provides a calibration signal in response; and a feedback circuit which provides a control signal as a function of an error signal and of the calibration signal.
Owner:STMICROELECTRONICS SRL

LDO linear voltage stabilizing circuit, chip and device

The invention discloses an LDO (Low Dropout Regulator) linear voltage stabilizing circuit, and relates to the technical field of LDO linear voltage stabilization, and the LDO linear voltage stabilizing circuit comprises a comparison output module which is used for comparing a received reference voltage with a feedback voltage so as to generate and output an error signal; the buffer driving module receives the error signal and carries out amplification and buffer processing so as to generate and output a driving signal. The first compensation module generates a first compensation signal according to the load current and the sampling current so as to dynamically adjust the amplitude and / or phase of the driving signal; the power switch module controls the on-off of a switch according to the received driving signal, and further adjusts the magnitude of voltage output to a load; the feedback module detects the voltage of the load and outputs the voltage to the comparison output module. Therefore, the first compensation module generates the first compensation signal according to the dynamic change of the feedback load current and the load capacitance, so as to dynamically adjust the amplitude and / or phase of the driving signal output to the power switch module, and ensure the stability of a circuit loop.
Owner:GUANGZHOU LAIFEI MICROELECTRONICS CO LTD

Gate driver circuit

A driver circuit for controlling a high-power switch. The driver circuit comprises a flyback converter having a positive output rail and a negative output. The driver circuit also comprises: a driving stage that is connected between the positive output rail and the negative output rail; a shunt regulator configured to regulate the negative output voltage on the negative output rail based on a difference between the negative output voltage and a target negative voltage value, wherein the shunt regulator is powered by the positive output voltage on the positive output rail; a short-circuit transistor having a conduction channel that is connected between the negative output rail and a ground terminal; and a regulation control circuit configured to: provide a short-circuit control signal to a control terminal of the short-circuit transistor in order to short the negative output rail to the ground terminal until the positive output voltage reaches a positive threshold.
Owner:NXP USA INC

Heterogeneous multi-core chip power consumption state control system and heterogeneous multi-core chip

According to the heterogeneous multi-core chip power consumption state control system and the heterogeneous multi-core chip provided by the invention, the power consumption state request of each sub power supply domain is received through the set system hardware power consumption management module, and the driving signal is sent to the corresponding sub power supply domain according to the preset hardware time sequence, so that the corresponding sub power supply domain enters the target state; generating a PMU control signal; and the power management module drives an internal voltage regulator to execute corresponding regulation operation according to the PMU control signal. A special control processor (SCP) is not needed, the system hardware power consumption management module realized by pure hardware is adopted to directly control the power consumption state of each sub power supply domain in the heterogeneous multi-core SoC, the software processing delay is eliminated, the response speed is high, the static power consumption of the power consumption management module is remarkably reduced, and the system is particularly suitable for an ultra-low power consumption scene and has a wide application prospect. And hardware-level surge current protection is realized in a multi-core power-on process.
Owner:SHANGHAI WU QI MICROELECTRONICS CO LTD +1

Trans-inductor voltage regulator (TLVR) inductor module and power electronics assembly including the TLVR inductor module

A trans-inductor voltage regulator (TLVR) inductor module includes: a magnetic core; a first winding embedded in the magnetic core; a second winding embedded in the magnetic core and inductively coupled to the first winding; a third winding embedded in the magnetic core; a fourth winding embedded in the magnetic core and inductively coupled to the third winding; and a first integrated metallic connector that connects the second winding and the fourth winding in a series loop. A power electronics assembly that includes the TLVR inductor module is also described.
Owner:INFINEON TECH AUSTRIA AG

Synchronous generator excitation method based on mathematical modeling and gain scheduling

The invention discloses a synchronous generator excitation method based on mathematical modeling and gain scheduling, and relates to the technical field of synchronous generator control, and the method comprises the steps: building a synchronous generator global dynamic mathematical model comprising the electromagnetic dynamic characteristics of a stator winding, a rotor winding and a damping winding through a modeling module; a discretization simulation platform is constructed in a Matlab / Simulink environment by utilizing a simulation module, model parameters are corrected, dynamic adjustment is realized through a gain scheduling excitation controller, an automatic voltage regulator (AVR) adopts PID (Proportion Integration Differentiation) control and comprises a voltage deviation integral separation strategy, and a power system stabilizer (PSS) dynamically adjusts parameters of a lead-lag compensator based on active power. According to the method, the deviation between a model and an actual system can be reduced by more than 30%, the electromechanical oscillation damping ratio within the rated power range of 10%-150% is increased by 25%-40%, the harmonic content of exciting current is reduced to be lower than 5%, the stability of an electric power system and the electric energy quality are remarkably improved, the engineering practicability is high, and the method is easy to transform and upgrade on an existing synchronous generator.
Owner:CHINA YANGTZE POWER

ESC voltage regulator voltage control method and system based on fuzzy adaptive PID

The invention relates to the technical field of voltage control, and discloses an ESC voltage regulator voltage control method and system based on fuzzy adaptive PID, and the method comprises the steps: collecting the output voltage of an ESC voltage regulator and a preset target voltage in real time, calculating a voltage error and an error change rate after filtering, and carrying out the calculation of the error change rate; dividing fast tracking, precise adjustment and anti-interference stability maintenance stages according to errors and change rates and generating control signals, calling corresponding fuzzy rule subsets to deduce proportional, integral and differential gain adjustment amounts, generating real-time gains in combination with initial PID parameters, calculating control amounts by using position type PID based on the real-time gains, converting the control amounts into signals to drive power switch tubes, and controlling the power switch tubes. And closed-loop adjustment is formed. According to the method, the problem that a traditional control method is poor in performance under multiple working conditions is solved, cooperative control over rapid tracking, precise adjustment and anti-interference stability maintenance of the output voltage of the ESC voltage regulator is achieved, it is ensured that the ESC voltage regulator can output stable voltage under the working conditions of starting, steady-state operation and load sudden change, and the requirement for high voltage control precision and dynamic response is met.
Owner:HANGZHOU YUNUO ELECTRONICS TECH

Over-current protection control circuit of low dropout regulator and low dropout regulator

The invention discloses an overcurrent protection control circuit of a low-dropout linear regulator and the low-dropout linear regulator, and relates to the field of voltage regulators. A first sampling module is connected with a drain electrode, a grid electrode and a source electrode of a power control tube in the low-dropout linear regulator and a first current comparator; the first current comparator is further connected with the grid electrode of the first protection switch and the input voltage end of the low dropout linear regulator, the source electrode of the first protection switch is connected with the grid electrode of the power control tube, the drain electrode of the first protection switch is grounded, and the source electrode of the power control tube is connected with the voltage output end of the low dropout linear regulator; the second sampling module is respectively connected with the drain electrode of the power control tube, the grid electrode of the power control tube and the clamping module, the clamping module is connected with the grid electrode of the second protection switch through the second current comparator and is also connected with the source electrode of the power control tube, the drain electrode of the second protection switch is grounded, and the source electrode of the second protection switch is connected with the grid electrode of the power control tube. The reliability of current limiting can be improved.
Owner:ZHUHAI ISMARTWARE TECH CO LTD

High-reliability power supply chip circuit fault detection system

The invention relates to the technical field of chip detection, and discloses a high-reliability power supply chip circuit fault detection system, which comprises a built-in self-test architecture integrated in a low dropout regulator chip, and the built-in self-test architecture is provided with a first test mode and a second test mode which are switched based on a mode switching control circuit. The detection module is used for detecting key performance parameters of an error amplifier sub-circuit in a low dropout linear regulator chip, the detection module is used for measuring the direct current loop gain, the offset voltage, the common mode rejection ratio and the power supply ripple rejection ratio of the amplifier in the first test mode, and the detection module is used for measuring the unity gain bandwidth of the amplifier in the second test mode. According to the invention, through the design of a built-in self-test architecture and two test modes, abnormal states such as differential circuit imbalance and feedback loop fault can be identified in a bare chip stage, chips with poor performance are rejected in advance, and the LDO chip is ensured to reach a ppb-magnitude high reliability standard.
Owner:CHINA ELECTRONICS RELIABILITY AND ENVIRONMENTAL TESTING INSTITUTE ((THE FIFTH INSTITUTE OF ELECTRONICS MINISTRY OF INDUSTRY AND INFORMATION TECHNOLOGY) (CHINA SAIBAO LABORATORY)

Multi-valued RRAM read-write circuit with write-and-read function and method

The invention belongs to the technical field of analog integrated circuit design and memory read-write, and provides a multi-valued RRAM read-write circuit with a write-and-read function. The multi-valued RRAM read-write circuit is a multi-port device capable of performing read-write simultaneously, in write operation, a low dropout regulator is utilized to provide voltage for the RRAM circuit and the standard resistance circuit, mirror current is generated, the resistance value of the RRAM is set to be the total resistance of the standard resistance circuit, an operational amplifier is connected into the circuit through a CMOS switch, and feedback is formed to stabilize the voltage at the two ends of the RRAM; and in the read operation, the CMOS switch is used for disconnecting the operational amplifier, and the voltage at the two ends of the RRAM device is directly read. Compared with an existing multi-valued read-write circuit, the multi-valued RRAM read-write circuit has the advantages that write-and-read multi-valued RRAM read-write is realized, and meanwhile, the read-write circuit is not separated, so that the write-in speed is increased, and the area of the read-write circuit is saved.
Owner:BEIJING INST OF TECH

Turn-back overcurrent protection circuit and linear voltage regulator

The invention provides a turn-back overcurrent protection circuit and a linear voltage regulator, and the turn-back overcurrent protection circuit comprises a turn-back switch module which compares an output voltage with a preset voltage, and outputs a turn-back current when the output voltage is smaller than or equal to the preset voltage; and the overcurrent protection module is connected with the turn-back switch module, performs overcurrent protection on the linear voltage regulator based on the first current limiting point when the turn-back switch module does not output the turn-back current, and reduces the current limiting point from the first current limiting point to a second current limiting point based on the turn-back current when the turn-back switch module outputs the turn-back current, and over-current protection is carried out on the linear voltage regulator based on the second current limiting point. According to the invention, the problem of circuit damage caused by overlarge output current due to short circuit or overload in the prior art is solved.
Owner:HUNAN XINLITE ELECTRONIC TECH CO LTD

Automatic voltage regulating device for power distribution area and control method of automatic voltage regulating device

The invention discloses an automatic voltage regulating device for a power distribution area and a control method of the automatic voltage regulating device, and belongs to the technical field of power distribution network voltage treatment. The device comprises a three-phase power supply, a power supply side input circuit, a load side output circuit, a current transformer, a single-P air switch, a power supply conversion module, a three-phase independent voltage regulation module, a main path control system, an automatic bypass control system, a gear driving module, a man-machine interaction module, a display module, a monitoring module, a mode switching module, a parameter storage module and an alarm module. The system comprises a manual adjustment execution module, a counting module, a voltage detection module, a current detection module, a 4G communication module and an over-temperature protection module. A main circuit control system depends on input and output voltage data fed back by a voltage detection module, compensation voltage U can be independently calculated for differential voltage fluctuation of L1, L2 and L3 phases, intelligent adjusting switches of all phases are driven to act accurately, and finally three-phase output voltage U2 is stabilized within an allowable range.
Owner:QUJING POWER SUPPLY BUREAU YUNNAN POWER GRID CO LTD

Transient enhancement circuit applied to low dropout regulator

The utility model provides a transient enhancement circuit applied to a low dropout regulator, and relates to the technical field of analog integrated circuits. The overvoltage detection circuit drives the charging and discharging circuit to charge the grid electrode of the power output tube to lower the output voltage when the output voltage of the low dropout linear regulator exceeds the first voltage threshold value, and meanwhile, the undervoltage detection circuit drives the charging and discharging circuit to charge the grid electrode of the power output tube to lower the output voltage when the output voltage is smaller than the second voltage threshold value. When the output voltage of the low dropout linear regulator changes instantly and rapidly along with a load or changes in a rapid jitter phenomenon of the input voltage, the charging and discharging circuit is driven to discharge the grid electrode of the power output tube so as to increase the output voltage. The low-dropout linear regulator can quickly and adaptively cooperate with a negative feedback loop included in the low-dropout linear regulator to realize a timely output voltage transient response adjustment effect, so that the corresponding output voltage can be effectively limited to a set threshold range and quickly recovered to a stable state.
Owner:3PEAK INC

Low-voltage line intelligent voltage regulation voltage stabilizer control system

The invention discloses a low-voltage line intelligent voltage regulation voltage stabilizer control system, and relates to the technical field of voltage stabilizer control, an intelligent control unit judges whether the current line voltage needs voltage regulation control based on a control algorithm, if yes, a corresponding voltage regulation control instruction is generated, a silicon controlled rectifier switching module executes non-contact on and off operation, and the voltage regulation control is completed. The voltage regulation compensation module is used for carrying out voltage compensation on the basis of the output of the voltage transformation module, so that the output voltage is controlled within a preset range, and when the power grid voltage is detected to be recovered and stable within a set time, and when the power grid voltage is detected to be abnormal, the voltage regulation compensation module is used for carrying out voltage compensation on the basis of the output of the voltage transformation module. And the intelligent control unit is automatically switched into a bypass for operation. According to the control system, a voltage stabilization control framework with high response speed, three-phase independent adjustment capability, an intelligent dormancy mechanism and a complete fault protection system is constructed, and the intelligent level and the operation performance of the low-voltage power distribution system are remarkably improved.
Owner:浙江富杰电气有限公司

Heel backer shaper

InactiveCN104921413AFlat surfaceClear edgesShoe trimmingEngineeringTreadle
A heel backer shaper comprises a case, a last-compressing ironing base, a last rotation mechanism, a shaping wheel, an automatic selector switch, and a footboard. One side of the upper half of the case is not closed. The last rotation mechanism is disposed on the upper half of the case. The last rotation mechanism comprises a cylinder and a rotary table; the rotary table is disposed at the top of the cylinder; the last-compressing ironing base is disposed on the top inner wall of the case and right faces the rotary table. During heel shaping, the heel backer shaper can adjust the operating performances, such as the position of the shaping wheel on a backer, knocking force, ironing temperature and delay time, according to the quality conditions of a shoe so as to acquire optimal shaping effect; during normal working, the heel backer shaper can operate in an automatic manner; an electrothermal plate on the last-compressing ironing base is controlled via a three-compartment closed-loop controlled silicon voltage regulator, temperature control precision is greatly improved, a temperature difference can be controlled within a 10 DEG C range, and the plane of the shaped backer is flat, with clear edge and smooth wrinkle-free surface.
Owner:TIANJIN BEST CAPITAL LEATHER PROD

Transient response optimization method based on linear voltage regulator

The invention relates to the technical field of power supply management, in particular to a transient response optimization method based on a linear voltage regulator, and the method comprises the steps: obtaining transient response data of the linear voltage regulator when a load suddenly changes, and judging whether the linear voltage regulator enters a transient early warning state or not. And if entering the early warning state, carrying out high-frequency noise threshold segmentation on an output voltage waveform, extracting voltage change rate characteristics, constructing a compensation efficiency model based on dynamic response time and effective compensation bandwidth, calculating an optimal open-loop compensation coefficient, generating a compensation control instruction, and driving a compensation network to carry out dynamic compensation. And if the pre-warning state is not entered, ripple uniformity data of the output voltage is acquired, a deviation matrix of an actual ripple distribution curved surface and an ideal ripple distribution plane is determined, and whether a local ripple abnormal region exists is determined. According to the method, through dynamic monitoring and intelligent compensation, the transient response speed and stability of the linear voltage regulator are improved, and high-frequency noise processing and ripple uniformity are optimized.
Owner:BEIJING YANHUANG GUOXIN TECH CO LTD

Trans-inductor voltage regulator for high bandwidth power delivery

A voltage regulator having a multiple of main stages and at least one accelerated voltage regulator (AVR) bridge is provided. The main stages may respond to low frequency current transients and provide DC output voltage regulation. The AVR bridges are switched much faster than the main stages and respond to high frequency current transients without regulating the DC output voltage. The AVR bridge frequency response range can overlap with the main stage frequency response range, and the lowest frequency to which the AVR bridges respond may be set lower than the highest frequency to which the main stages respond.
Owner:GOOGLE LLC

Ultralow frequency sensor

The ultralow frequency sensor comprises a vibration detection unit, a power supply voltage stabilization unit and a signal conditioning unit, the power supply voltage stabilization unit is provided with a low dropout linear voltage regulator U20, a voltage converter U19 and a negative voltage regulator U21, and the low dropout linear voltage regulator U20 stabilizes an external power supply as a positive power supply VCC; the voltage converter U19 is used for converting positive voltage of an external power supply into negative voltage and outputting stable negative power supply VEE through the negative voltage stabilizer; the positive power supply VCC and the negative power supply VEE supply power to the signal conditioning unit; the signal conditioning unit comprises a high common mode rejection differential amplifier, a differential-to-single-ended amplifier, a band-pass filter and a differential output driver, a differential signal output by the vibration detection unit sequentially passes through the high common mode rejection differential amplifier, the differential-to-single-ended amplifier, the band-pass filter and the differential output driver, and then a differential voltage signal is output; the method has the advantages of high stability and reliability and the like.
Owner:WEIHAI SUNFULL GEOPHYSICAL EXPLORATION EQUIP

Multi-output isolated power supply

The embodiment of the invention provides a multi-output isolated power supply, which comprises a power transformer comprising a single primary side coil and a single secondary side coil; a switch driving circuit coupled to the primary coil to output a driving voltage to the primary coil based on the input voltage; a rectification circuit coupled to the secondary coil and configured to rectify a voltage across the secondary coil to output a first DC voltage at a first rectified voltage output end and a second DC voltage at a second rectified voltage output end; and an output unit coupled to the first rectified voltage output terminal and the second rectified voltage output terminal, the output unit comprising one or more low dropout linear regulator circuits, where an output terminal of a predetermined low dropout linear regulator circuit is coupled to the secondary circuit ground, the output unit is configured to output at least one positive voltage and at least one negative voltage with a voltage at an output terminal of a predetermined low dropout linear regulator circuit as a reference.
Owner:BEIJING GL MICROELECTRONICS TECHNOLOGY CO LTD

Voltage regulation controller with line protection function

The invention discloses a voltage regulation controller with a line protection function, and relates to the technical field of power electronic control. The problems of bypass / voltage regulator self-excitation switching, operation refusing and protection mismatching caused by a single-end voltage threshold in the prior art are solved. Comprising a first sampling unit, a second sampling unit, a first characteristic unit, a second characteristic unit, a first criterion unit, a second criterion unit, a scheduling unit, an execution unit and a closed loop unit. A dynamic criterion set is constructed, segmented priority scheduling and two-stage execution are driven through a multi-end contribution vector, and self-adaptive correction is conducted through residual current and arc light indexes in a closed loop; according to the invention, the action selectivity and the low-current fault detection reliability are remarkably improved.
Owner:XINXIANG STRONG POWER ELECTRIC

Eddy current mitigation for on-chip inductors

An electronic device may include a transceiver with a substrate and an inductor on the substrate. A ring of ground traces may surround the inductor. Circuit components may be patterned onto the substrate overlapping the inductor, a region of the substrate surrounded by the inductor, and / or a region of the substrate between the inductor and the ring. The components may be arranged in trees with feed lines extending radially outward from a central axis. The components in each tree may be separated from the capacitors in other trees by gaps, preventing eddy currents on the trees. The components may be used to form bypass capacitors for power supply lines, a low-dropout regulator load, part of the loop filter of a phase-locked loop, or other portions of the transceiver. The components may thereby be used to convey signals while also meeting fill factor requirements associated with fabrication of the substrate.
Owner:APPLE INC

Low dropout linear regulator circuit, low dropout linear regulator, power supply device, and electronic apparatus

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.
Owner:SHENZHEN LOWPOWER SEMICON CO LTD

Transient response optimization method based on linear voltage regulator

The present application relates to power management technical field, especially to a kind of transient response optimization method based on linear voltage regulator, method includes: obtaining the transient response data of linear voltage regulator when load mutation, judge whether into transient early warning state.If into early warning state, high-frequency noise threshold segmentation is carried out to output voltage waveform, extract voltage rate of change characteristic, construct compensation efficiency model based on dynamic response time and effective compensation bandwidth, calculate optimal open-loop compensation coefficient, and generate compensation control instruction, drive compensation network to carry out dynamic compensation.If not into early warning state, the ripple uniformity data of output voltage is obtained, determine the deviation matrix of actual ripple distribution surface and ideal ripple distribution plane, judge whether there is local ripple abnormal area.The method improves the transient response speed and stability of linear voltage regulator by dynamic monitoring and intelligent compensation, optimizes high-frequency noise processing and ripple uniformity.
Owner:BEIJING YANHUANG GUOXIN TECH CO LTD

Radio frequency front-end lightning protection circuit and lightning protection equipment

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.
Owner:SHANGHAI HAIJI INFORMATION TECH

Underground water quality on-line automatic monitoring station

The invention relates to an underground water quality on-line automatic monitoring station which comprises a monitoring station main body, a multi-parameter sensor, a pump and a solar power supply system, the multi-parameter sensor and the pump are arranged underground, a plurality of layers of partition plates are arranged in the monitoring station main body, a plurality of mounting layers are formed from top to bottom, and a control box is mounted at the top of the uppermost partition plate; a monitoring instrument is installed on the monitoring station body, a voltage stabilizer and a UPS are sequentially arranged at the position of a partition plate below the monitoring instrument and electrically connected with a battery pack to form a standby power supply system, a reagent container is arranged at the position adjacent to the battery pack, a measuring pool is arranged at the bottom in the monitoring station body, and a liquid outlet of the measuring pool is communicated with a waste liquid and waste water collecting device. According to the invention, through reasonable partition arrangement of multiple layers of partition plates, real-time monitoring and data uploading of underground water are realized, dual-power-supply guarantee is provided, operation is stable, waste liquid is collected, treated and detected in a centralized manner, and secondary pollution is effectively avoided.
Owner:四川省生态环保产业集团监测装备有限公司

Voltage generator and memory device including same

A voltage generator including an LDO (low dropout) regulator that supplies a current to an internal voltage node of a sense amplification circuit as feedback control based on a voltage level of the internal voltage node; and a power switch circuit including a plurality of power switches each having one end connected to an external voltage and an opposite end connected to the internal voltage node, and that supplies the current to the internal voltage node as feed-forward control based on a known number of sense amplifiers to be activated. The voltage generator may efficiently supply current according to an operation mode of the sense amplification circuit.
Owner:SAMSUNG ELECTRONICS CO LTD

Control method for self-adaptive voltage-regulating energy-saving solid-state transformer of power distribution network

The invention discloses a control method for a self-adaptive voltage-regulating and energy-saving solid-state transformer of a power distribution network, which relates to the technical field of power distribution network regulation and control, and comprises the following steps: firstly, acquiring voltage, current, power and constraint information of a low-voltage side in the operation of the solid-state transformer, detecting natural voltage-regulating events such as superior tapping deflection, voltage regulator action and reactive switching, and performing voltage regulation on the solid-state transformer; establishing an evidence chain record containing a timestamp, a steady-state window and a quality identifier, and not injecting identification disturbance; secondly, intercepting a steady-state window and avoiding a transient state according to an evidence chain, estimating voltage-power elasticity, and performing confusion filtering and quality scoring; constructing a regression baseline in parallel, synthesizing a contrast baseline and an event anchoring calibration baseline, fusing to obtain anti-fact baseline power and uncertainty, and calculating energy saving amount; and finally, according to the uncertainty, the quality score, the end margin and the device constraint gating, the voltage setting is updated, and safe rollback is carried out, so that the energy-saving amount can be audited, the control is more stable, and the out-of-limit risk is reduced.
Owner:ZHONGQI ELECTRIC POWER EQUIP CO LTD

3D semiconductor device and structure with logic and memory

A 3D semiconductor device including: a first level including a single crystal layer, a memory control circuit, a first metal layer, a second metal layer, and a third metal layer; connection of the first transistors comprises the first, and / or the second, and / or the third metal layer; a fourth metal layer disposed atop third transistors disposed atop second transistors disposed atop said first level; a memory array including word-lines and at least four memory mini arrays which include at least four rows by four columns of memory cells, each of the memory cells includes at least one of the second transistors (at least one with a metal gate) or at least one of the third transistors; a connection path from the fourth metal to the third metal including a via disposed through the memory array; the memory control circuit includes first transistors and voltage regulators.
Owner:MONOLITHIC 3D INC

Firecracker-style controlled nuclear fusion and fission synergistic power generation device and power generation method

This invention discloses a firecracker-style controlled nuclear fusion and fission synergistic power generation device and method. The power generation device includes a fission-fusion reaction system, a circulating cooling system, and other accessories. The fission-fusion reaction system includes a neutron gun, fuel spheres, a fuel sphere storage and delivery device, and a vacuum reactor. The circulating cooling system includes a circulating fan, a voltage regulator, a steam turbine, a steam generator, delivery pipelines, and a water pump. Other accessories include an energy storage and control system and a vacuum pump. This invention innovatively integrates the start-up mechanism, drawing on the firecracker-style multi-reactor relay concept, combining nuclear fission and nuclear fusion. It utilizes the high temperature and pressure generated by nuclear fission to start nuclear fusion, reducing start-up difficulty and cost. Simultaneously, it efficiently converts and utilizes energy, employing helium for heat transfer. Helium's high thermal conductivity, low density, high specific heat capacity, and chemical inertness allow it to effectively carry away the heat stored in the phase change microspheres, comprehensively collecting and converting nuclear reaction heat energy, thus improving energy conversion efficiency.
Owner:BEIJING UNIV OF CHEM TECH