755 results about "Regulated power supply" patented technology

A power circuit for a computer system is disclosed. The power circuit includes a voltage regulator circuit and a pull-down circuit. While activated, the voltage regulator circuit generates a particular voltage level on a regulated power supply node. In response to the voltage regulator circuit being deactivated, the pull-down circuit couples a first resistor between the regulated power supply node and a ground supply node. After a period of time has elapsed since the deactivation of the voltage regulator circuit, the pull-down circuit decouples the first resistor, and couples a second resistor, whose value is greater than the first resistor, between the regulated power supply node and the ground supply node.

The invention discloses a new energy medium and long term stochastic programming method and system coupled with an electro-hydrogen water regulation power supply, and the method comprises the steps: building a power supply planning model with the minimum planning operation cost as an optimization target; bringing the new energy power supply and energy storage adjusting equipment operation model and the new energy consumption rate upper and lower limit constraint expression into a power supply planning model; in consideration of the randomness of fluctuation at two sides of a source and a load in power supply planning, based on the obtained power system operation scene set S and the power supply planning model, dividing into an investment decision-making layer and an operation simulation layer according to a time period influenced by a decision, and constructing a power supply planning two-stage stochastic optimization model based on a typical scene; and solving the power supply planning two-stage stochastic optimization model under a medium and long term planning framework, and determining the investment planning installed capacity of the adjusting power supply and the new energy in the planning level year. According to the invention, economy of medium and long term planning and power supply capacity configuration of new energy can be improved, and reasonable consumption and flexible adjustment of new energy electric power are promoted.

The invention provides a surface thermometer calibration system. The surface thermometer calibration system comprises a surface heat source device, a control host, a temperature control thermometer, a reference surface thermometer and a standard thermometer, the surface heat source device comprises a glass cover, a constant-temperature disc heat source, an upper protection structure, an adjustable support and a cooling fan. The control host comprises a dual-channel high-precision thermodetector, a dual-channel program-controlled output voltage-stabilized power supply and a control module, and the control module is used for obtaining measurement results of the temperature control thermometer, the reference surface thermometer and the standard thermometer and dynamically adjusting the output voltage of the dual-channel program-controlled output voltage-stabilized power supply according to the measurement results. Temperature control of the constant-temperature disc heat source is achieved. According to the surface thermometer calibration system designed and developed by the invention, the reliability and the calibration efficiency of surface thermometer calibration can be remarkably improved, and the reliability of surface temperature value traceability is ensured.

The utility model relates to the technical field of voltage-stabilized power supplies, in particular to a mining explosion-proof safety voltage-stabilized power supply device, which comprises a power supply body, an explosion-proof joint fixedly mounted on the front side surface of the power supply body, an anti-breaking mechanism arranged on the front side of the power supply body, damping mechanisms arranged on two sides of the power supply body, and an anti-breaking mechanism comprising an anti-breaking part and a control part, and the shock absorption mechanism comprises a shock absorption part and an abutting part. The push rod is pressed to drive the two connecting rods to move, the two connecting rods drive the two hinge blocks and the two arc-shaped clamping plates to be away from each other, the two arc-shaped clamping plates drive the sliding rods to move and extrude the clamping springs, the wire harness penetrates through the circular ring to be connected with the anti-explosion connector, and the push rod is loosened. And the clamping spring rebounds to drive the two arc-shaped clamping plates to clamp and fix the wire harness, so that the wire harness is collided and shaken during long-time use, and the joint of the wire harness and the explosion-proof joint is not easy to loosen, poor contact and fracture, thereby ensuring the normal work of workers.

The invention discloses a wave power generation device for an island, and relates to the technical field of power generation for the island, the wave power generation device comprises a floating body and a fixed support, the floating body floats along with sea waves, an energy generation mechanism and an energy conversion mechanism are arranged on the inner side of the fixed support, the fixed support does not float along with the sea waves, and the energy generation mechanism is arranged on the top surface of the floating body; the fixed support controls the buoyancy difference value of the floating body based on the moving state of the energy generation mechanism, the energy conversion mechanism is connected with a generator through a transmission mechanism and drives the generator through the transmission mechanism, the generator is connected with a frequency-stabilized voltage-stabilized power supply through a wire, and the frequency-stabilized voltage-stabilized power supply outputs stabilized voltage electric energy. The wave power generation device has the advantages of being high in wave energy conversion efficiency, simple and compact in structure and reliable in operation.

The invention provides a high-voltage test method and device for electrical equipment, electronic equipment and a storage medium, the method is applied to a high-voltage test device, and the high-voltage test device comprises a bearing platform, a frequency modulation and voltage regulation power supply arranged on the bearing platform, an excitation transformer, an adjustable reactor and a capacitive voltage divider. Comprising the following steps: controlling an adjustable reactor and a capacitive voltage divider to be converted from a storage state to a working state on a bearing platform; target electrical equipment is connected to the output end of the adjustable reactor to form a series resonance circuit; a target test item is determined, and the voltage output frequency and the inductance value of the adjustable reactor are adjusted according to preset target test parameters of the target test item, so that the series resonance circuit reaches a resonance state; and outputting a voltage according to the target test parameter, obtaining a test operation parameter of the target electrical equipment, and generating a target test result according to the test operation parameter. According to the invention, the testing efficiency of high-voltage testing of the ultrahigh-voltage electrical equipment can be improved.

The invention discloses a super-capacitor energy storage boost control electric energy meter high-power load switch circuit and a control method, and relates to the technical field of power systems, and the circuit comprises a charging circuit which comprises a charging branch electrically connected with a voltage-stabilized power supply and a super-capacitor electrically connected with the charging branch; the boost circuit is electrically connected with the output end of the charging circuit and comprises a power supply branch, a boost chip electrically connected with the power supply branch and a voltage division branch; and the driving circuit is electrically connected with the output end of the booster circuit and comprises a driving chip and a load switch electrically connected with the driving chip. According to the method, the occupied area of the circuit board is reduced, the space is saved, the existing super-capacitor is fully utilized, the cost is reduced, the super-capacitor discharges at a high rate, the service life is long, and the reliability is improved.

The invention belongs to the technical field of micromachining, and particularly discloses a device and method for machining transparent hard and brittle materials through electric field assisted laser induced plasmas, the device comprises a computer, a laser machining system and a longitudinal electric field generation device, and the laser machining system comprises a laser device, a beam expander, a reflector and a scanning galvanometer. The longitudinal electric field generating device comprises an electrode plate and a direct-current stabilized power supply; the computer is connected with a laser in the laser processing system; and the longitudinal electric field generating device is connected with the transparent conductive film on the to-be-processed surface of the transparent hard and brittle material and the metal target below the material through an electrode plate to form a longitudinal electric field. According to the invention, the distance between the two electrode plates is shortened by improving an electric field applying mode, so that the distance between the electrodes can reach a micron level, and a relatively large electric field force can be generated under a relatively low voltage; the transparent conductive film is used as the electrode, so that the incident laser can penetrate through the electrode for processing without being blocked, the processing device is simpler, and the processing mode is more flexible.

The invention discloses a comprehensive interference test system and test method for an intelligent electric energy meter, and the system comprises a master control system which controls a test device and communicates with a to-be-tested electric energy meter for data interaction. The test equipment comprises an electric energy meter calibration device, the electric energy meter calibration device is connected with a power supply control cabinet, and the power supply control cabinet is connected with a variable-frequency stabilized-voltage power supply and controls the output of the variable-frequency stabilized-voltage power supply. A to-be-tested electric energy meter is installed in the meter hanging frame, and the meter hanging frame simulates the magnetic flux leakage influence and the power frequency magnetic field influence through wiring and electric energy meter arrangement. The meter hanging frame is placed in the constant-temperature and constant-humidity test box, and the constant-temperature and constant-humidity test box simulates different climate test conditions; the meter hanging frame is connected with the load control cabinet, and the load control cabinet is connected with the real load and controls operation of the real load.

A voltage regulator includes an input power supply node, an output regulated power supply node, a flipped voltage follower circuit, and a compensation capacitor. The flipped voltage follower circuit includes an output transistor configured as a common-source amplifier circuit. A source terminal of the output transistor is coupled to the input power supply node and a drain terminal of the output transistor is coupled to the output regulated power supply node. The flipped voltage follower circuit includes a folded cascode feedback circuit. The folded cascode feedback circuit includes a folding node. The folded cascode feedback circuit is configured to receive an output regulated voltage on the output regulated power supply node and to provide a feedback signal to a gate terminal of the output transistor. The compensation capacitor is coupled to the output regulated power supply node and the folding node.

A high-speed, low-noise laser signal detection apparatus, comprising a low-noise linear regulated power supply and a laser detection processing module. The low-noise linear regulated power supply (01-03) comprises an isolation unit (01), a voltage regulation and filtering unit (02), and a reference unit (03). The laser detection processing module (04-09) comprises a laser light signal detection input unit (05), a bias unit (04), a differential amplification unit (07), an active filtering unit (08), and an output interface unit (09). An output end of the voltage regulation and filtering unit (02) is connected to the reference unit (03) and the laser detection processing module (04-09). The reference unit (03) is connected to the bias unit (04) and is configured to provide a reference voltage to the bias unit (04). The bias unit (04) is configured to provide a bias voltage to the differential amplification unit (07). The differential amplification unit (07) comprises a multi-stage in-phase proportional differential amplification circuit, and the active filtering unit (08) comprises a multi-order active low-pass filter. According to the high-speed, low-noise laser signal detection apparatus, the detection bandwidth of a laser signal can be expanded, the signal-to-noise ratio of high-frequency pulse measurement can be reduced, and the anti-interference characteristics of a power supply can be improved.

The invention discloses an easy-to-install column-type voltage-stabilized power supply, and the power supply comprises a power supply assembly which comprises a box body, a compensation coil supporting seat disposed in the box body, and a voltage-stabilized part disposed at the upper end of the compensation coil supporting seat. The installation assembly comprises an installation part arranged on the compensation coil supporting base and a clamping piece arranged on the installation part, the installation part and the compensation coil supporting base are detachably connected, the voltage stabilizing part is provided with a matched clamping piece matched with the installation part, and the compensation coil supporting base is arranged at the lower end of the voltage stabilizing part. According to the power supply, the voltage stabilizing component is lifted, so that the voltage regulator electric brush is kept at a relatively high position and state, the purpose of saving the occupied space of the whole power supply is achieved, and the voltage stabilizing component is lifted, so that the voltage regulator electric brush can be more stable during voltage regulation, and the overall moving distance is longer.

The utility model relates to the technical field of automatic testing of sensors, and discloses an automatic testing mechanism of a current sensor, which comprises a deck plate, a testing assembly is mounted on the deck plate, and a pressure head and a probe assembly are arranged at the top of the testing assembly. According to the utility model, the test assembly and the pressure head and probe assembly are arranged on the countertop and work together, so that parameters of the current sensor can be automatically tested, and the current sensor parameter testing device has the advantages of simple operation, high test efficiency, high precision, high automation degree, good safety, reliable result, simple mechanism, low equipment cost, convenience and rapidness, and the like. Therefore, the trouble that multiple sets of equipment such as a digital oscilloscope, a program-controlled voltage-stabilized source and a desk-type digital multimeter are needed to test each current sensor in the traditional mode is avoided, the time is effectively saved, and the labor cost is greatly reduced.

The present invention relates to the technical field of frequency converters, and in particular to a frequency converter testing device. The frequency converter testing device comprises: a testing assembly, which comprises a box body, an accommodating cavity arranged in the box body, and a back plate disposed inside the accommodating cavity; a locking assembly, which comprises a sliding block disposed on the outer wall of the back plate and a movable frame disposed inside the box body; and an adjustment assembly, which comprises fixing plates disposed inside the accommodating cavity and a plurality of engagement blocks disposed on the outer wall of each fixing plate. In the present invention, by means of the provision of the box body, a testing box, a main control board, a 24V stabilized voltage supply and an automatic take-up device are assembled within the box body to form an integrated device, thereby facilitating long-term preservation and storage and improving the stability of the device during use; a retractable seat backrest is additionally provided, when the back plate extends by means of pushing a handle, a cover plate can be locked by means of a pin shaft, and the height of the back plate can be adjusted on the basis of requirements; and when testing is required, the handle is pushed reversely, such that the back plate can retract into the accommodating cavity, and the cover plate is unlocked, thereby facilitating the opening of a toolbox for testing.

The utility model relates to the technical field of direct-current power supplies, in particular to a high-efficiency low-ripple two-cascade joint debugging direct-current voltage-stabilized power supply system, which comprises a switching power supply, a main controller circuit, a power conversion circuit, an auxiliary power supply module and a serial port communication module, and is characterized in that the main controller circuit is respectively connected with the power conversion circuit, the auxiliary power supply module and the serial port communication module; the main controller circuit is connected with the switching power supply through the gate driver and is used for adjusting the output of the switching power supply, the main controller circuit controls the conversion of the power conversion circuit through an adjusting signal to obtain an actual output voltage, carries out error comparison on the actual output voltage and a set voltage, and dynamically adjusts the output voltage through a PID algorithm; the auxiliary power supply module is used for providing stable power supply voltage for the power conversion circuit and the serial port communication module; the serial port communication module is used for monitoring output voltage and current. According to the utility model, low ripples can be maintained on the premise that high efficiency is maintained.

The utility model relates to the technical field of direct-current voltage-stabilized power supplies, and discloses a mining direct-current voltage-stabilized power supply, which comprises a shell, a slot is arranged in the shell, a bottom plate is movably inserted in the slot, a direct-current voltage-stabilized power supply body is fixedly connected onto the bottom plate, U-shaped jacks are arranged on two sides of the slot in the shell, and the U-shaped jacks are inserted into the slot. U-shaped inserting holes are formed in the bottom plate, inserting blocks are movably inserted into the U-shaped inserting holes, a connecting plate is fixedly connected between the inserting blocks on one side, a first inserting groove matched with the inserting blocks is formed in the bottom plate, a sealing cover is arranged on the shell, a sliding mechanism for driving the connecting plate to move is arranged on the sealing cover, and inserting rods arranged in an array are movably inserted into the sealing cover. Compared with the prior art, the voltage-stabilized power supply has the advantages that the voltage-stabilized power supply is convenient to disassemble and maintain, so that the voltage-stabilized power supply does not need to be disassembled by removing bolts one by one, and time and labor are saved.

The invention relates to an electroosmosis grouting structure for improving uniform distribution of enzyme-induced mineralization products in shallow sand, which comprises a first electroosmosis grouting assembly and a second electroosmosis grouting assembly which are inserted into the shallow sand to be reinforced, the second electroosmosis grouting assembly is connected to the negative electrode of the direct-current stabilized power source through a wire, the first electroosmosis grouting assembly and the second electroosmosis grouting assembly each comprise at least one electroosmosis grouting pipe, and graphite carbon rings are arranged on the peripheries of the electroosmosis grouting pipes. The electroosmosis, grouting and slurry pumping functions are integrated in the electroosmosis grouting structure, and the diffusion distance of ions in the soil body is further increased, so that mineralized products of the soil body are distributed more uniformly; the problems that in the microbial mineralization technology, the carbonate crystal yield is gradually reduced along with the seepage path, so that the reinforcing effect of the soil body away from the grouting pipe in large-area foundation treatment is poor, and the overall reinforcing effect is not uniform are solved.

The invention relates to the technical field of direct-current stabilized power supply performance testing, in particular to a direct-current stabilized power supply performance parameter testing method and system, and the method comprises the steps: collecting the output voltage data of a direct-current stabilized power supply within a preset time period under each preset target output voltage; uniformly dividing each preset time period into each sub-time period and numbering the sub-time periods according to a time sequence to obtain an amplitude distribution coefficient of each same frequency under each target output voltage; screening the characteristic frequency of each ripple; acquiring amplitude change characteristic values of the same ripple characteristic frequencies in the same sequence number sub-periods under all target output voltages; acquiring the ripple same-frequency difference degree of each same ripple characteristic frequency; screening each ripple frequency from all the same ripple characteristic frequencies, and obtaining the ripple floating ratio of each target output voltage; and evaluating the abnormal condition of the performance of the DC stabilized power supply. The invention aims to realize comprehensive and accurate evaluation of the performance of the direct-current stabilized power supply.

1. Name of the Design Product: Power Supply (Linear Regulated Power Supply). 2. Use of the Design Product: For DC regulated power supply. 3. Design Key Points of the Design Product: Lies in the shape. 4. Picture or Photo that Best Illustrates the Design Key Points: Perspective View 1.

The application provides an AM-PM distortion calibration method applied to an UWB transmitter and belongs to the field of UWB communication. The method adds a sampling resistor between a linear voltage stabilizing power supply LDO and a digital power amplifier DPA driving stage of the UWB transmitter using a digital power amplifier, so as to simulate the instantaneous change of the power supply voltage of the DPA driving stage when the UWB pulse is transmitted; an adjustable delay unit is added between a carrier input port LO and the DPA driving stage; the continuous sine wave is transmitted, the phase information under each digital baseband amplitude control word is collected to form original data of the AM-PM distortion of the UWB transmitter, the digital baseband output AM-PM control word is used to control the adjustable delay unit to output the phase which is opposite to the original data and has the same size, so that the phase predistortion of the transmitted UWB pulse is realized, and the AM-PM distortion calibration is completed. The application has the advantages of simple implementation and strong compensation capacity.

An amplification circuit for a radio-frequency signal comprises a transistor power amplifier (100) and a fixed regulated power supply (110) for providing an output supply voltage to the transistors (100). The circuit comprises a modulator (160) regulating the output supply voltage in a continuously variable manner, said modulator being dependent on a detector (150) measuring an output radio-frequency signal of the transistor.

The utility model discloses a three-stage AC parallel voltage-stabilized power supply system, which comprises a plurality of voltage-stabilized power supply modules capable of being expanded in parallel, the input ends of the voltage-stabilized power supply modules are used for being connected with 220V AC commercial power, and the output ends of the voltage-stabilized power supply modules are used for being connected with loads; each voltage-stabilized power supply module comprises an APFC converter, a DC-DC converter and an H-bridge inverter which are sequentially connected in series. The system is simple in structure, reasonable in design and convenient to realize, can stably output alternating current 220V voltage and power of 3kW under the condition of wide-range input voltage by adopting three-stage series connection, simultaneously has the functions of multi-stage parallel connection of modules, remarkably improves the stability and anti-fluctuation capability of the power supply system, ensures stable and reliable output, is good in use effect, and is suitable for popularization and application. The popularization and use are convenient.

The invention provides a high-precision voltage-stabilizing constant-current power supply for continuous discharge of a CO2 laser, which relates to the technical field of high-voltage voltage-stabilizing constant-current power supplies and comprises a high-voltage direct-current voltage-stabilizing power supply and a high-impedance amplification loop. The high-voltage direct-current voltage-stabilized power supply is boosted by a transformer, rectified by a rectifier bridge and stabilized by a filter capacitor, and continuously adjustable high-voltage output of 0-30kV is provided; the high-impedance amplification loop is composed of an operational amplifier, a three-stage triode amplification circuit and an electronic tube, the output impedance reaches up to 650 megohms, and the high-impedance amplification loop has the excellent constant-current characteristic. The power supply can accurately adjust the output current in the range of 0-30mA, the current fluctuation is less than one thousandth, the power supply can continuously and stably operate for more than 18 hours, and the power supply is suitable for laser discharge control in a high-temperature and high-density plasma environment. According to the invention, high-precision output is realized by adopting common performance devices, the advantages of voltage resistance, overload resistance and cost are considered, and the problems of poor current stability and inconvenient adjustment of a traditional laser power supply are solved.

The invention relates to a low-power-consumption linear voltage stabilizing circuit and a voltage stabilizing power supply. The low-power-consumption linear voltage stabilizing circuit comprises a depletion type field effect transistor, a voltage stabilizing circuit, a voltage stabilizing circuit and a voltage stabilizing circuit, the feedback circuit is connected in series with the depletion mode field effect transistor to form a first current branch and is used for generating feedback voltage according to the output voltage; and the control circuit is connected in series with the depletion type field effect transistor to form a second current branch and is used for generating a starting voltage not less than a starting threshold according to the feedback voltage when the power supply voltage is reduced to the output voltage so as to adjust the output voltage to be stable according to the starting voltage. The two current branches are adopted, so that the quiescent current can be further reduced, and the extreme low-power-consumption requirement is met. Meanwhile, a depletion mode field effect transistor is used as a power tube, and the power tube can still be normally started to work when the power supply voltage is low to the output voltage, so that enough high output voltage can be provided for a post-stage circuit to use in a scene that the power supply voltage is relatively low.

The invention provides a high-voltage precise adjustable analog linear direct-current stabilized power supply, which comprises a signal processing unit, a rectifying and filtering unit, a control unit and a voltage stabilizing unit, and is characterized in that the signal processing unit is used for performing voltage amplification on received external signals and outputting the external signals to the control unit; the rectifying and filtering unit is used for rectifying and filtering input alternating current to obtain direct current and supplying power to the control unit; the control unit is used for sampling the output voltage of the power supply and adjusting the output voltage based on a sampling signal and an external signal so as to control the output value of the voltage stabilizing unit; and the voltage stabilizing unit is used for carrying out step-by-step current amplification based on the received output voltage so as to adjust the output voltage of the voltage stabilizing unit, filtering the output voltage and finally outputting the output voltage. According to the invention, the problems of high procurement and maintenance cost of the existing foreign imported linear adjustable power supply and large ripple, poor stability, obvious voltage drift and limited voltage regulation range of the common linear voltage-stabilizing direct-current power supply and the switching power supply in the market are solved.

The application discloses a high-duty-cycle control system of a step-down DC-DC switching power supply, which is additionally provided with a high-duty-cycle control system on the basis of a basic structure of the switching power supply and comprises an LDO, a diode D2 for charging a capacitor C1 by the LDO, an error amplifier, a current comparator, an OR gate, a pulse generator, an RS latch and an under-voltage lockout circuit for detecting a voltage VBS between the capacitor C1. The under-voltage lockout circuit detects the voltage VBS between the capacitor C1, when the voltage is insufficient, temporarily turns off a charging switch tube M1, charges the capacitor C1 for providing a stable voltage power supply for a driving circuit during the turn-off of the M1, restores the power supply voltage of the driving circuit, and then reopens the M1, so as to realize the high-duty-cycle conduction of the NMOS type charging switch tube.

The present invention relates to a circuitry system (1). The circuitry system (1) comprises a reservoir power rail (12), a regulated power rail (14), a logic circuitry (18) connected to the regulated power rail (14), wherein each of the reservoir power rail (12), regulated power rail (14) and logic circuitry (18) is connected to respective voltage supply source (16), characterized by a dynamic decoupling capacitor (10) connecting the reservoir power rail (12) to the regulated power rail (14), and in communication with the logic circuitry (18), wherein the dynamic decoupling capacitor (10) is configured to match a total-charge of injected-current, ldecap, from the reservoir power rail (12) with a total-charge of load-current, lload, supplying to the logic circuitry (18). A method for regulating voltage of the circuitry system (1) is also disclosed herein.

The invention provides a product vehicle simulation training control system and method, and belongs to the technical field of product vehicle simulation training control. In order to solve the technical problems that the number of training tasks of existing product vehicle simulation training equipment is small, irreversible abrasion exists on the equipment, the function is single, and the training effect is limited, the adopted product vehicle simulation training control system comprises a comprehensive control cabinet, a mobile power station, a vehicle body sensing control module, a hydraulic pump station and peripheral display control equipment. A comprehensive control box, an alternating-current distribution box, a direct-current stabilized power supply, a storage battery cabinet, an energy monitoring unit and an intelligent power distribution unit are arranged in the comprehensive control cabinet; the vehicle body sensing control module is arranged in an oil cylinder of the simulation product vehicle, in each equipment cabin and on a vehicle frame; the control end of a PLC host in the comprehensive control box is connected with a vehicle body sensing control module, a hydraulic pump station, peripheral display control equipment and a vehicle control execution mechanism through wires. The method is applied to product vehicle simulation training.

The invention discloses a wide voltage input multistage voltage-stabilized power supply system, which relates to the technical field of vehicle-mounted power supplies, and comprises an input protection unit, the input end of which is connected with a vehicle power supply and is used for preventing the positive and negative electrodes of the vehicle power supply from being reversely connected and outputting an input voltage, and the input voltage range is 8V-60V; the input end of the high-voltage stabilizing unit is connected with the output end of the input protection unit, and the high-voltage stabilizing unit is used for converting the input voltage into 12V voltage and outputting the 12V voltage; the input end of the medium-voltage stabilizing unit is connected with the output end of the high-voltage stabilizing unit, and the medium-voltage stabilizing unit is used for converting 12V voltage into 5V voltage and outputting the 5V voltage; the input end of the low-voltage stabilizing unit is connected with the output end of the medium-voltage stabilizing unit, and the low-voltage stabilizing unit is used for converting 5V voltage into 3.3 V voltage to be output, so that the problem that various standard voltages cannot be output at the same time in the prior art is solved.

The invention relates to a device and method for evaluating the influence of a power supply noise group on phase noise of a phase-locked loop, and relates to the technical field of phase-locked loops, and the device comprises a sine phase discriminator which detects the phase difference between an external reference signal and a feedback signal of a voltage-controlled oscillator; the input end of the loop filter is connected with the output end of the sine phase discriminator; the input end of the voltage-controlled oscillator is connected with the output end of the loop filter; establishing a phase-locked loop simulation model composed of a sine phase discriminator, a loop filter and a voltage-controlled oscillator; selecting a linear voltage-stabilized power supply series, and calculating a phase noise matrix with power supply noise corresponding to each model; different types of linear voltage-stabilized power supplies are respectively used for supplying power, and actually measured phase noise data corresponding to each type are tested and recorded; power supply noise group distribution is fitted by adopting a power law function, and optimal linear voltage-stabilized power supply model selection under the phase-locked loop architecture is determined. The method has the beneficial effects that the accuracy of predicting the phase noise is improved, the optimal solution is realized, and the model most suitable for the phase-locked loop architecture in the LDO series is selected.