2829 results about "Power supply voltage" patented technology

An output drive circuit includes: a totem-pole output including: a high-side transistor (HST) with drain and source, an output stage power supply voltage applied to the drain, the source connected to the first node (N1); and a low-side transistor with source and drain, a ground voltage applied to the source, the drain connected to N1; and a bootstrap part including a capacitor supplying charge to a gate of HST when on, the charge being charged when HST is off, and one terminal of the bootstrap part connected to N1, the output drive circuit further including: a first transistor (T1) that conducts when HST is to be on, T1 connected between a drive circuit power supply voltage and the gate of HST; and a second transistor conducting when HST is to be turned on, the second transistor connected between the other terminal of the capacitor and HST gate.

The invention relates to the technical field of industrial big data, in particular to a transformer consumption reduction intelligent control method and system based on a power generation end, and the method comprises the steps: building a source-load space-time correlated industrial big data set, determining an operation reference, and synchronously monitoring real-time electrical parameters; load component decoupling is executed, a basic load component is stripped, and a power fluctuation deviation parameter is extracted; reconstructing equivalent control power of a power generation end based on a nonlinear fluctuation compensation strategy; and constructing a power grid energy efficiency function to execute loss minimization optimization, determining a power supply voltage setting value and driving on-load voltage regulation. Through multi-dimensional data fusion and non-linear load reconstruction, the problem that a traditional method is difficult to deal with random fluctuation of the load is solved, collaborative optimization of transformer loss and line transmission loss is achieved, and operation energy consumption of a power supply loop of a power generation end is effectively reduced.

The invention relates to the technical field of wireless communication, and provides a power amplifier, a power amplification module and a multi-mode multi-frequency power amplifier, the power amplifier comprises a first-stage low-frequency power amplifier, a second-stage low-frequency power amplifier, a harmonic suppression circuit, a first output matching circuit, a first filter circuit and a second filter circuit; the first-stage low-frequency power amplifier and the second-stage low-frequency power amplifier are used for amplifying low-frequency-band signals, the harmonic suppression circuit is used for suppressing harmonic waves output by the first-stage low-frequency power amplifier and the second-stage low-frequency power amplifier, and the output end of the first output matching circuit is used for outputting signals; and the first output end of the first filter circuit and the output end of the second filter circuit respectively provide filtered power supply voltage for the first-stage low-frequency power amplifier and the second-stage low-frequency power amplifier. According to the invention, the harmonic leakage of the multi-mode multi-frequency power amplifier can be optimized.

The embodiment of the invention relates to the technical field of induction pumps, in particular to a high-temperature liquid metal electromagnetic pump which comprises a main body, an inductor, a temperature sensor and an excitation controller. The main body is hermetically connected with a conveying piece for conveying high-temperature liquid metal; the inductor is arranged to enable the high-temperature liquid metal in the main body to generate induction current and enable the high-temperature liquid metal to generate pressure difference at different positions of the main body, so that the high-temperature liquid metal can flow at different positions; the temperature sensor monitors the temperature in the main body; the excitation controller is set to be capable of adjusting the power supply voltage and frequency of the inductor; the main body is arranged to be capable of preventing heat transfer of the high-temperature liquid metal to the inductor. The electromagnetic pump can meet the sealing requirement of high-temperature liquid metal conveying; flow control is facilitated, and the requirement for controllable conveying of high-temperature liquid metal in the molten salt electrolysis dry-method technological process is met; the failure of the high-temperature liquid metal electromagnetic pump can be avoided, and the operation stability and reliability of the electromagnetic pump can be improved.

The invention discloses a fast data protection method and device for SSD abnormal power failure, equipment and a medium, and relates to the field of SSDs, and the method comprises the steps: monitoring a power supply voltage, and generating an interrupt signal when the power supply voltage is lower than a preset threshold value; in response to the interrupt signal, turning off a power supply of a preset non-data path hardware module through the SSD controller; stopping scheduling all operation commands for the NAND flash memory through the SSD firmware, and emptying a data path in an NAND flash memory controller; writing the user data in the host write cache and the command information corresponding to the user data into a special physical address block reserved in the SSD in advance; after the SSD is powered on again, the address mapping table is recovered by scanning the write-in point in the NAND flash memory, the backup data and the command information in the special physical address block are read, and the backup data are written into the user data area according to the command information. According to the method, the key data backup time during abnormal power failure is shortened, the capacity requirement for the standby capacitor is reduced, and the problem that the cost is increased due to the fact that the backup time is too long is effectively solved.

The invention relates to the technical field of communication, in particular to a three-network convergence communication terminal system based on core size level heterogeneous integration and an implementation method, and the system comprises a radio frequency transceiving core particle, a baseband processing core particle, a storage core particle, a control scheduling core particle and a power management core particle. According to the invention, systematic linkage optimization of cross-domain parameters is realized through a core size level heterogeneous integration and state space cooperation mechanism, and real-time channel state information directly drives a scheduling algorithm to solve in a global state space. According to the method, the problems of low energy efficiency utilization rate, lagged resource scheduling response, low power consumption and the like of a terminal in a multi-network concurrency and switching scene due to the fact that a multi-network communication module is discrete and a cross-hardware-level dynamic coordination mechanism is lacked are effectively solved, and the service life of the terminal in a multi-network concurrency and switching scene is prolonged. And therefore, the problems of limited terminal volume, high power consumption and poor service continuity can be solved.

A semiconductor device includes first and second N-type semiconductor regions provided selectively in an upper layer part of an N-type high-breakdown voltage isolation region, and a P-type semiconductor region provided selectively in the upper layer part of the N-type high-breakdown voltage isolation region and to be supplied with a first power supply voltage lower than a second power supply voltage. The second N-type semiconductor region is arranged closer to an N-type high-potential region than the first N-type semiconductor region and the P-type semiconductor region. The P-type semiconductor region is arranged between the first N-type semiconductor region and the second N-type high-potential region in a plan view. A diode has an anode to be supplied with the second power supply voltage, and a cathode electrically connected to the first N-type semiconductor region. The second N-type semiconductor region is electrically connected to the N-type high-potential region.

An electronic pen includes an electronic pen body portion unit, a power supply portion unit that supplies a power supply voltage to the electronic pen body portion unit, and a first housing portion and a second housing portion that form an electronic pen outer casing. The electronic pen body portion unit has a columnar shape, wherein a core body can be installed on one end side in the axial direction, and an electrical first terminal portion is included on another end side in the axial direction. The power supply portion unit includes a second terminal portion. In a columnar housing space of the electronic pen outer casing, the electronic pen body portion unit and the power supply portion unit are lined up and arranged in the axial direction to remain in position in the axial direction, and the first terminal portion and the second terminal portion are electrically connected.

In disclosed embodiments, a voltage sensor of a computing device is configured to determine a voltage level of a supply voltage provided by a power supply to processor circuitry. Comparator circuitry may perform a comparison operation that compares the determined voltage level to a threshold. A temperature sensor may determine a temperature of at least a portion of processor circuitry. Power control circuitry may initiate a power management operation to adjust voltage margin based on a result of the comparison operation. Additionally, the power management circuitry may control the comparator circuitry to impose an offset on the comparison operation. The power control circuitry may determine a magnitude of the offset based on a pre-determined effect of the determined temperature on voltage margin parameters for at least a portion of the processor circuitry.

A method includes determining whether an audio signal processed in a class-D amplifier is clipping. Responsive to clipping of the audio signal, a speaker voltage is estimated as a ratio of a power supply voltage of the class-D amplifier to a resistance of a speaker driven by the class-D amplifier. An amplitude of the audio signal is controlled based on the speaker voltage.

A display apparatus comprises a controller, comprising at least one input terminal, and connected to the at least one drive group via the at least one input terminal, wherein the controller is configured to: during a first time period, transmit drive data to a drive group of the at least one drive group via an input terminal of the at least one input terminal, to drive light sources corresponding to the drive group to emit light; during a second time period, receive a detection signal transmitted from the drive group via the input terminal of the controller, wherein the detection signal indicates the voltage state of the light sources corresponding to the drive group as detected by the drive group.

The invention discloses a high-power-supply-rejection-ratio band-gap reference circuit with base current correction and high-order temperature compensation, which comprises a pre-voltage-stabilizing circuit module used for generating and outputting internal power supply voltage according to external power supply voltage, the internal power supply voltage is supplied to the band-gap reference core circuit module so as to isolate transmission of power supply noise to reference output; the high-order temperature compensation circuit module is used for generating nonlinear compensation current according to the bias voltage; the band-gap reference core circuit module is used for generating current in direct proportion to absolute temperature, reference voltage and reference output voltage based on internal power supply voltage and feeding back the reference voltage to the pre-voltage-stabilizing circuit module to serve as bias reference; and the base current correction circuit module is used for sampling the base current of the bipolar transistor in the band-gap reference core circuit module. On the premise that the circuit structure and the power consumption are reasonable, the temperature drift of the reference voltage is reduced, and the power supply suppression capability is improved.

The invention discloses a programmable low-temperature-drift under-voltage locking circuit, and the circuit comprises a reference current generation module which is used for outputting an initial reference current, and the input end of the reference current generation module is connected with a first reference voltage; the zero-temperature-drift current source array is used for generating reference current according to the initial reference current and the second reference voltage and mirroring the reference current to a plurality of parallel branches; the trimming module is used for adjusting the total current of the parallel branches by using a programmable resistor and a capacitor; the sampling module is used for sampling the total current and the power supply voltage of the parallel branches output by the trimming module; and the comparison output module is used for comparing the power supply voltage with a sampling voltage generated according to the programmable resistor and the total current of the parallel branches, and outputting a pair of differential signals. Through the reference current generation module, the zero-temperature-drift current source array, the trimming module, the sampling network and the voltage comparator, the problems that in an existing resistance voltage division type undervoltage locking scheme, a threshold value is fixed and cannot be adjusted, and the scheme is sensitive to temperature changes are solved.

A pixel includes a driving switching element including a control electrode connected to a first node, a first electrode connected to a second node and a second electrode connected to a third node, a writing switching element including a control electrode receiving a writing gate signal, a first electrode receiving a data voltage and a second electrode connected to the second node, a compensation switching element including a control electrode receiving a compensation gate signal, a first electrode connected to the first node and a second electrode connected to the third node, a storage capacitor including a first electrode receiving a first power voltage and a second electrode connected to the first node, the light emitting element emitting a light based on a driving current flowing through the driving switching element. The writing gate signal is n-th stage gate signal. The compensation gate signal is (n+k)-th stage gate signal.

Provided are an audio playing module and an audio processing circuit thereof, and an electronic device, which belong to the technical field of electronics. In the audio processing circuit, by adding a feedback control circuit between a power circuit and an audio amplifier, the feedback control circuit can control, according to a change in the amplitude of an audio signal received by the audio amplifier, the power circuit to adjust a power supply voltage provided for the audio amplifier. Thus, when the amplitude of the audio signal changes, an appropriate power supply voltage can be matched for the audio amplifier by means of the feedback control circuit, thereby solving the problem of the audio playing module generating whistling when the amplitude of the audio signal changes, and thus optimizing the sound quality of played sounds.

The invention discloses an aging test system and method for a high-speed dynamic random access memory, and the system comprises a test board which is used for bearing at least one to-be-tested memory chip; the controller is used for generating and outputting a test excitation signal conforming to a corresponding memory technical standard; the power management module is used for providing adjustable power supply voltage for the memory chip to be tested according to the control instruction; the communication interface is used for realizing data interaction between the controller and an upper computer and reading configuration information of the memory chip to be tested; wherein a test parameter template library associated with various memory technical standards and product specifications is preset in the controller, and corresponding test parameter templates are automatically matched and loaded according to chip configuration information read by the communication interface so as to adapt to memory chips with different standards. According to the invention, a single hardware platform can be used for universally and adaptively testing various high-speed dynamic random access memories, and the testing efficiency and the equipment utilization rate are remarkably improved.

A display apparatus comprises a backlight assembly, comprising: at least one drive group, wherein one drive group comprises at least one first drive chip and at least one second drive chip, a quantity of channels of a first drive chip differs from a quantity of channels of a second drive chip, and the at least one first drive chip and the at least one second drive chip are connected in series; and at least one light-emitting unit group, wherein one light-emitting unit group comprises a plurality of light sources, each of the plurality of light sources is connected to the first drive chip or the second drive chip via a channel of the first drive chip or the second drive chip.

An apparatus comprising a pair of inverters configured in a cross-coupled configuration, wherein an inverter of the pair of inverters comprises a static random-access memory (SRAM) physically unclonable function (PUF) circuit, wherein the SRAM PUF circuit comprises an inverter; and an inverter cell comprising a p-channel metal-oxide-semiconductor (PMOS) transistor, an n-channel metal-oxide-semiconductor (NMOS) transistor, and output node, and a control signal input, wherein: (i) the PMOS transistor comprises (a) a drain terminal that is coupled to an output and (b) a source terminal that is coupled to a supply voltage, (ii) the NMOS transistor comprises a gate terminal that is coupled to a gate of the PMOS transistor that inhibits a path between the supply voltage and ground, and (iii) responsive to a low state provided to the control signal input, the control signal input causes the PMOS transistor to charge the output node to the supply voltage.

The invention discloses a non-intrusive sensor with an external excitation source and a voltage measurement method, and the non-intrusive sensor comprises an induction signal collection unit, an induction signal conditioning unit, and a main control unit. The main control unit is respectively connected with the induction signal conditioning unit and the cable power supply, the induction signal conditioning unit is connected with the induction signal acquisition unit, and the induction signal acquisition unit is in non-contact inductive coupling connection with a cable to be detected; the main control unit is used for injecting the specific excitation signal into an alternating current loop of a cable power supply to form a composite signal, analyzing the composite signal based on a preset excitation source amplitude parameter, and calculating the power supply voltage of the to-be-detected cable; the induction signal acquisition unit generates a corresponding induction signal by capturing electric field energy generated by a composite signal in the to-be-detected cable; the induction signal conditioning unit carries out standardization processing on the induction signal. According to the invention, the technical problems of low external excitation voltage measurement precision, low system integration and single excitation source generation mode in the prior art are solved.

The invention discloses a band-gap reference circuit, a working method thereof and electronic equipment, and relates to the technical field of band-gap reference circuits. The circuit comprises a pre-voltage-stabilizing module; the starting module is electrically connected with the pre-voltage-stabilizing module; the band gap core module is electrically connected with the starting module; the operational amplifier module is electrically connected with the band gap core module and the pre-voltage-stabilizing module; wherein the band-gap core module is used for outputting a reference voltage source; the pre-voltage-stabilizing module is used for buffering power supply voltage to obtain working voltage and providing the working voltage for the starting module and the operational amplifier module, and the pre-voltage-stabilizing module is further used for feeding back the influence of fluctuation of the power supply voltage on the reference voltage source to the pre-voltage-stabilizing module for readjustment; the starting module is used for starting the band gap core module; and the operational amplifier module is used for performing negative feedback regulation on the reference voltage source. The circuit can provide a reference voltage source with high PSRR and low temperature drift.

The invention discloses a tunnel reluctance current sensor self-correction measurement method, system and device based on voltage feedback and a medium, and belongs to the technical field of current measurement and sensor anti-interference, and the method comprises the steps: extracting fundamental wave complex components at the fundamental wave frequency of a power supply voltage and an initial output voltage; calculating a filter coefficient according to the fundamental wave complex component and performing phase correction on the output voltage to obtain a corrected output voltage sequence aligned with the phase of the power supply voltage signal; calculating a voltage ratio signal according to the corrected output voltage and the power supply voltage and determining a ratio signal residual error; final current estimation is obtained according to the voltage ratio signal and the ratio signal residual error in combination with the ratio signal; according to the invention, a double-closed-loop compensation structure is adopted, so that channel mismatching and non-linear interference are effectively suppressed; the digital implementation mode enables the system to have good reconfigurability and environmental adaptability, and the system is suitable for application scenes such as intelligent power grids, distributed power monitoring and industrial online detection.

The present disclosure proposes a switching power supply, comprising a power supply capacitor, for generating a power supply voltage to supply a control chip of the switching power supply with power, its first end being connected to the power supply terminal of the control chip of the switching power supply, its second end being grounded, and the first end generates a power supply voltage; a linear regulator circuit connected between the first end of the power supply capacitor and a common connection end of the main power transistor and the auxiliary power transistor; wherein, the voltage at the connection end between the main power transistor and the auxiliary power transistor charges the power supply capacitor through the linear voltage regulator The present disclosure can save power consumption, improve the working efficiency of switching power supply, and optimize the EMI of switching power supplies.

The invention provides a nanowatt-level voltage reference source circuit with low power supply voltage, which relates to the technical field of circuits and comprises a current bias module and a voltage reference generation module, the output end of the current bias module is connected with the bias end of the voltage reference generation module, and the current bias module is used for providing bias current with a high power supply rejection ratio; the voltage reference generation module comprises a first-stage operational amplifier and a second-stage operational amplifier, and the output end of the first-stage operational amplifier is connected to the input end of the second-stage operational amplifier; the first-stage operational amplifier is used for generating a threshold voltage difference value with a negative temperature coefficient; and the second-stage operational amplifier is used for performing temperature compensation on the threshold voltage difference value and outputting stable reference voltage. In the mode, nanowatt-level static power consumption under low power supply voltage is realized, the influence of process fluctuation is remarkably inhibited, and high-precision and low-temperature-drift reference voltage output is obtained.

The invention discloses a display device and a display driving method. A time sequence control module judges that a display picture of a current frame of a display panel is one of a light-load display picture and a heavy-load display picture, and when a display picture of a to-be-displayed frame is the other one of the light-load display picture and the heavy-load display picture, the time sequence control module controls the display panel to display the light-load display picture and the heavy-load display picture; and controlling the generated enable signal to have an effective level at a vertical blanking interval between the current frame and the frame to be displayed, so that the power management module adjusts a compensation value applied to the analog power supply voltage according to the effective level of the enable signal at the vertical blanking interval, the voltage offset of the generated analog power supply voltage relative to the reference voltage in at least one of the starting time period and the ending time period of the vertical blanking interval is reduced, so that the stability of the analog power supply voltage in the time period where ripples are easy to generate is improved, and the ripples of the analog power supply voltage are reduced. And the problem of water ripples or crosstalk occurring during display of the display panel is solved.

An electrostatic discharge protection circuit includes an NMOS transistor connected to a supply voltage pin through a first node and connected to a ground pin through a second node, an RC circuit connected in parallel with the NMOS transistor and including a capacitor and a resistor, and a clamping circuit connected in parallel with the resistor of the RC circuit and including a plurality of diodes; and a switch connecting the clamping circuit to a gate node of the NMOS transistor, wherein a number of the plurality of diodes is set based on a breakdown voltage and an operating voltage of an internal circuit to be protected by the ESD protection circuit, and the switch includes a PMOS transistor connecting the gate node of the NMOS transistor to the clamping circuit and a sub-RC circuit connected in parallel with the PMOS transistor and including a sub-capacitor and a sub-resistor.

The utility model provides a toxic gas detector control circuit capable of resisting electromagnetic interference, which comprises a power supply voltage regulation circuit, a temperature signal acquisition circuit, a sensor voltage regulation circuit, a sensor acquisition control circuit and a gas detector main control circuit which are in power supply connection. The gas detector main control circuit is in control connection with the 485 communication circuit, the acousto-optic prompt circuit, the LED state display circuit and the digital display screen, the gas detector main control circuit is in communication connection with the sensor acquisition control circuit, and the sensor acquisition control circuit is in control connection with the gas signal acquisition circuit and the temperature signal acquisition circuit. A TVS (Transient Voltage Suppressor) tube, a common mode inductor and a diode are arranged in the power supply voltage adjusting circuit; and a TVS tube and a diode are also arranged in the gas detector main control circuit. The poisonous gas detector has the beneficial effects that the anti-electromagnetic interference capability, the reliability and the stability of the poisonous gas detector when the poisonous gas detector is independently used are greatly improved.

A power amplifier system is disclosed with a carrier amplifier having a carrier bias input and a carrier supply node and a peaking amplifier having a peaking bias input and a peaking supply node. Also included is an envelope tracking power supply having a modulated voltage supply output coupled to the peaking supply node. Further included is a peaking bias controller having a peaking bias control input coupled to the peaking supply node and a peaking bias control output coupled to the peaking bias input, wherein the peaking bias controller is configured to generate in response to a modulated peaking supply voltage generated by the envelope tracking power supply at the peaking supply node a modulated peaking bias signal that controls bias of the peaking amplifier.

The invention relates to the technical field of network management, in particular to a switch voltage intelligent monitoring and abnormity regulation and control method and system, and the method comprises the following steps: reading port current and power supply voltage register conversion power consumption, writing the port current and power supply voltage register conversion power consumption into a port meter, comparing the port meter with rated power, and reading input / output and mainboard interface voltage according to an identifier; and positioning continuous periodic voltage change drop nodes, and determining a propagation node sequence by combining sampling time. According to the invention, by reading data conversion of a port current register and a port power supply voltage register and according to a power consumption accumulation result, power supply state judgment is associated with port load change, node voltage change is compared and identified by combining a continuous sampling period, and a voltage drop node is identified by combining a working voltage reference value. And a voltage propagation node sequence is obtained according to the sampling time, and the initial position of the power supply path is identified and is combined with the input voltage of the redundant power supply for register state writing, so that a voltage change source has a path association judgment basis.

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

The invention discloses an intelligent power distribution network adaptive power-saving regulation and control method based on dynamic load prediction, and the method comprises the steps: 1, collecting the power load data of each user, the current and voltage data of a power distribution line, and local meteorological data in real time through a data collection device, and carrying out the data cleaning and preprocessing of the collected data; step 2, a dynamic load prediction model is constructed by using the processed data, and the dynamic load prediction model can accurately predict future electrical load changes according to current moment data input in real time; 3, according to a prediction result of the dynamic load prediction model, regulating and controlling the optimal power supply voltage and the power distribution proportion of each distribution line and the operation state of a transformer in combination with the real-time operation state of the power distribution network; and step 4, by configuring a sensor in the power distribution network, continuously collecting data parameters of each node and the power utilization state and load change condition of each power utilization device, and then performing comparative analysis with the data before regulation and control.