667 results about "Voltage reduction" patented technology

The invention discloses a self-excitation cooperative energy management circuit for enhancing TENG output performance, and belongs to the technical field of power electronics. The self-excitation cooperative energy management circuit is connected to the rear end of the TENG and comprises a self-charge excitation circuit, a capacitance converter circuit and a voltage reduction circuit, and the self-charge excitation circuit is connected to the rear end of the TENG, comprises a rectification circuit and is used for charge excitation of the TENG, rectification and output of a first direct current signal; the capacitance converter circuit is connected to the rear end of the self-charge excitation circuit and is used for performing power conversion on the first direct-current signal and outputting a second direct-current signal; the voltage reduction circuit is connected to the rear end of the capacitance converter circuit, comprises a switching circuit and is used for reducing voltage and increasing current of the second direct-current signal and outputting a third direct-current signal. According to the self-excitation collaborative energy management circuit, the charge output capability of the TENG can be greatly improved, and an electronic device can be directly driven.

The invention discloses a power supply control system and method for an eVTOL low-voltage distribution box, and relates to the technical field of power supply control, and the system comprises a multi-source double-bus power supply unit, a voltage reduction unit and an output unit. The multi-source double-bus power supply unit comprises a first bus independent power supply channel and a second bus independent power supply channel, the first bus independent power supply channel and the second bus independent power supply channel are isolated based on a contactor, the first bus independent power supply channel comprises x heterogeneous power sources and x ideal diodes, and the x heterogeneous power sources comprise a high-voltage-to-low-voltage DC-DC power source, a ground power source and n lithium battery power sources. The second bus independent power supply channel comprises y paths of heterogeneous power supplies and y ideal diodes, and the y paths of heterogeneous power supplies comprise y paths of lithium battery power supplies; the step-down unit comprises m paths of DC-DC step-down converters; and the output unit comprises m ideal diodes which are connected in parallel with the output end of the DC-DC buck converter. According to the invention, the stability and quality of power supply are ensured, and airborne equipment is ensured to work in a stable voltage and current environment.

The application belongs to the technical field of high-voltage electrical test and detection, and relates to a disc-type insulator alternating current withstand voltage multi-channel leakage current detection method and system. The method comprises the following steps: setting a parameter set comprising a withstand voltage, a frequency, a voltage raising and stabilizing strategy, sampling parameters, a judgment threshold and a consistency threshold, and generating a version identifier; constructing equipotential boundaries and voltage grading electrodes, and organizing a high-voltage end of a to-be-detected insulator, an independent measurement loop and a common ground reference point; synchronously sampling each loop during voltage raising and stabilizing to obtain a multi-channel sequence; filtering and windowing the sequence to obtain an effective value and a stability index; compensating and calculating a consistency index; combining the threshold, a ground state and a communication state to output a judgment and an event marker, triggering voltage reduction or disconnection, and structuring evidence. The technical scheme of the application is suitable for batch detection of alternating current withstand voltage, and can realize judgment robustness and channel consistency control.

The invention discloses a voltage conversion module, a chip, electronic equipment and a circuit control method, and belongs to the technical field of circuits. The voltage regulation circuit comprises a battery module and a load, and under the condition that the battery module provides a first voltage within a first preset voltage range for a voltage conversion module, the voltage conversion module is used for reducing the first voltage provided by the battery module and outputting a second voltage, maintaining the second voltage stable or maintaining the voltage reduction ratio between the first voltage and the second voltage stable; and under the condition that the battery module provides a third voltage in a second preset voltage range for the voltage conversion module, the voltage conversion module is used for boosting the third voltage provided by the battery module and outputting a fourth voltage to maintain the fourth voltage stable or maintain the boosting ratio between the third voltage and the fourth voltage stable. And the flexibility of adjusting various input voltages by the voltage conversion module is improved.

The invention provides a voltage stabilizer based on voltage conversion, a control method and a storage medium, and the voltage stabilizer comprises a PFC chopping boost circuit which receives an input alternating current and a boost duty ratio, carries out the chopping boost of the input alternating current based on the boost duty ratio, and outputs a high-voltage chopping alternating current signal; the positive and negative half-cycle filter circuit is connected with the PFC chopping booster circuit and is used for rectifying and filtering the high-voltage chopping alternating-current signal to obtain a positive voltage-stabilizing chopping alternating-current signal and a negative voltage-stabilizing chopping alternating-current signal; the positive and negative half-cycle voltage reduction and stabilization circuit is connected with the positive and negative half-cycle filter circuit, receives the voltage reduction duty ratio, and performs voltage reduction and stabilization on the positive voltage stabilization chopping alternating current signal and the negative voltage stabilization chopping alternating current signal based on the voltage reduction duty ratio to obtain a preset actual positive electric signal and a preset actual negative electric signal; and the output voltage merging circuit is connected with the positive and negative half-cycle voltage reducing and stabilizing circuit, and integrates the preset actual positive electric signal and the preset actual negative electric signal to obtain a voltage stabilizing electric signal. According to the invention, the voltage fluctuation is quickly responded at low cost.

The invention discloses a passive multi-stage voltage soft turn-off circuit suitable for SiC MOSFETs. The passive multi-stage voltage soft turn-off circuit comprises a driving main branch, a plurality of voltage reduction branches, a driving resistor, a discharging resistor and a driving power supply circuit. The driving power supply circuit is powered by a positive power supply VCC when the SiC MOSFET is turned on, and is powered by a negative power supply VEE when the SiC MOSFET is turned off. The voltage reduction branches are connected to the two ends of the driving main branch in parallel. The step-down branch comprises a step-down delay unit, a step-down action unit and a step-down unit which are sequentially connected in series; the delay time of each step-down branch is increased in sequence, and the step-down voltage drop is increased in sequence. According to the invention, the voltage level can be conveniently controlled by changing the number of the voltage reduction branches, an additional power supply module does not need to be added, the voltage reduction time can be controlled by the voltage reduction delay branches, the degree of freedom of driving is greatly increased, and the circuit is low in complexity, high in voltage reduction degree of freedom and high in reliability.

A pulse generator is disclosed. The pulse generator includes a DC source; a plurality of switches, a transformer; and a pulsing output. The pulse generator can be coupled with a plasma chamber. The pulsing output outputs high voltage pulses having a peak-to-peak voltage greater than 1 kV and a voltage portion between consecutive high voltage bipolar pulses that has a negative slope that substantially offsets the voltage reduction on a wafer within a plasma chamber due to an ion current. The resulting voltage at the wafer may be substantially flat between consecutive pulses.

The utility model discloses a double-coil contactor, and the contactor comprises a power module which is used for accessing an external power supply voltage to generate a DC voltage, so as to enable a coil loop to be electrically conducted, and carrying out the voltage reduction of the DC voltage, and obtaining a power supply voltage; the external power supply is an AC power supply or a DC power supply; the sampling comparison module is used for sampling the direct-current voltage and generating a working voltage according to the power supply voltage when the sampling voltage is greater than a preset voltage threshold value; the driving module is used for controlling the pull-in coil loop to be electrically conducted based on the direct current voltage in response to the power supply voltage and the working voltage, and controlling the pull-in coil loop to be electrically disconnected in response to the trigger signal; the time delay module is used for generating a trigger signal when the duration of electrical conduction of the pull-in coil loop reaches a preset duration. According to the double-coil contactor, the AC voltage of the AC power supply can be converted into the DC voltage for control through the power supply module, and the application range of the double-coil contactor is greatly expanded.

The utility model provides a master control device and a carrier, the master control device comprises a master control circuit board, a master control unit and a plurality of module interfaces, the master control unit and the module interfaces are both arranged on the master control circuit board, the master control device further comprises a power supply voltage conversion module and a power supply input interface, the power voltage conversion module and the power input interface are both arranged on the main control circuit board, the power supply voltage input end of the main control unit is electrically connected with the main control voltage output end of the power voltage conversion module, and the input end of the power voltage conversion module is electrically connected with the power input interface. The plurality of module voltage output ends of the power supply voltage conversion module are electrically connected with the plurality of module interfaces respectively. According to the utility model, the power supply voltage conversion module is directly integrated on the main control circuit board of the main control device, so that the power supply voltage conversion module for realizing voltage reduction does not need to be independently arranged at other positions of the carrier, the number of cables in the carrier is reduced, the wiring space is saved, and the space utilization rate is improved.

The present invention belongs to the technical field of flow field velocity testing and relates to a device for measuring flow field velocity parameters. The present invention discloses a PIV system that uses a single phase-locked signal to trigger camera shooting at high frequency multiple times, and can achieve high-frequency continuous shooting in a rotor channel of a rotating machine. The device comprises a compressor, a camera, rotor blades, a rotor shaft system, an optical fiber sensor, a voltage reduction module, a synchronizer, a laser, a camera, and a laser sheet. The optical fiber sensor outputs a phase-locked signal. The voltage reduction module can reduce the voltage of a 24V high-level signal to a standard control signal voltage of 5V. A signal generator can generate a control signal with a specific frequency and rising edge time under external triggering. The synchronizer is responsible for receiving the control signal transmitted by the signal generator. The high-frequency laser is a dual-cavity Nd:YAG high-frequency laser.

The utility model, which relates to the technical field of the LED, discloses a leakage protection circuit comprising a power supply circuit, a step-down circuit, an LED circuit and a detection circuit. The input end of the power supply circuit is connected to the output pin of the power supply end, the output end of the power supply circuit is connected with the input end of the step-down circuit and the input end of the LED circuit, and the power supply circuit is used for rectifying the output power supply of the power supply end so as to output the power supply to the step-down circuit and the LED circuit; the output end of the step-down circuit is connected with the detection circuit, and the step-down circuit is used for carrying out step-down processing on the power supply output by the power circuit to output reference voltage to the detection circuit; and the detection circuit is respectively connected with the output pins of the power supply end and the LED circuit, and is used for controlling the working state of the LED circuit according to the real-time voltage difference and the real-time voltage between the output pins of the power supply end and the reference voltage output by the step-down circuit. According to the utility model, the working state of the LED circuit can be controlled according to the real-time voltage difference, the real-time voltage and the reference voltage, thereby realizing anti-creeping protection.

A pulse generator is disclosed. The pulse generator includes a DC source; a plurality of switches, a transformer; and a pulsing output. The pulse generator can be coupled with a plasma chamber. The pulsing output outputs high voltage pulses having a peak-to-peak voltage greater than 1 kV and a voltage portion between consecutive high voltage bipolar pulses that has a negative slope that substantially offsets the voltage reduction on a wafer within a plasma chamber due to an ion current. The resulting voltage at the wafer may be substantially flat between consecutive pulses.

The invention discloses a power supply control circuit and an input and output circuit system, and the circuit employs a multi-stage NMOS tube voltage reduction module to replace a diode structure scheme in the related technology. Through cooperative work of the multi-stage voltage reduction module and the multi-stage voltage boosting module, the problem of current leakage caused by too large gate-source voltage difference of a PMOS tube in a POC circuit in the related technology is solved, and output voltage is recovered to IO power supply domain voltage through the multi-stage voltage boosting module. And a pure MOS device design is adopted, and the problem of inconsistent PN junction voltage in a diode scheme does not need to be considered, so that the layout design does not need an additional isolation region, the circuit area is reduced, and the leakage current is reduced. According to the power supply control circuit, voltage step-by-step control is realized, and customized configuration can be carried out according to different voltage domain scenes. The integrated Schmitt trigger filters power supply noise, the trigger logic of the integrated Schmitt trigger is matched with the stage number of the multi-stage voltage reduction module, correct response under different voltage difference environments is achieved, and the reverse voltage of the circuit meets the design requirement.

The invention discloses a health management method for a GPU computing board card of an audio-frequency integrated signal processor, and belongs to the technical field of audio-frequency integrated signal processing. Multi-dimensional data of a GPU core, a video memory and a power supply module are collected in real time through a sensor, a three-dimensional temperature field is constructed by adopting an inverse distance weighted interpolation algorithm, and a thermal coupling area is accurately positioned; thermal field evolution is predicted based on an LSTM model, and a high-density instruction is dynamically scheduled to an NUMA core with sufficient heat dissipation allowance; aiming at sudden reading and writing of a video memory, a micro piezoelectric fan array is adopted to form vertical airflow (the wind speed is greater than or equal to 4m / s), and dynamic voltage reduction and graded heat dissipation strategies (phase change heat-conducting fins are pre-cooled to reduce the temperature by 8-10 DEG C, and the attack angle of centrifugal fan blades is 45 degrees) are combined. According to the scheme, the heat source recognition precision is improved by 40%, the heat dissipation delay is smaller than or equal to 45 microseconds, the calculation power loss is smaller than or equal to 0.8%, the video memory error rate is smaller than or equal to 1E-6, and high-density calculation heat management is remarkably optimized.

The invention belongs to the field of direct-current power supply systems for transformer substations, and particularly relates to an intelligent portable storage battery pack open circuit prevention detection method and device. The method comprises the following steps: judging whether a direct-current system operates normally or not through output voltage of a charger and initial voltage of a direct-current bus, if so, connecting a step-down silicon chain to the direct-current bus in series and connecting a storage battery pack to a direct-current power supply system to enable the storage battery pack to bear a conventional load of the direct-current power supply system, and judging whether the loading capacity of the conventional load of the storage battery is qualified or not; if the loading capacity of the conventional load of the storage battery is qualified, the simulated load is connected to a direct-current power supply system, whether the impact resistance of the storage battery is qualified is judged, if the impact resistance of the storage battery is qualified, the simulated load is disconnected, the voltage reduction silicon chain is in short circuit, the final voltage of the direct-current bus is obtained, and whether the performance of the storage battery pack is qualified is judged; the method can comprehensively check the effectiveness of the storage battery, discover the fault of the storage battery in time, verify whether the system can bear a normal load or not, and ensure the operation safety of the DC system.

The invention discloses an overvoltage suppression method based on an intermediate-frequency DRU-MMC direct-current power transmission system, and the method comprises the steps: improving the operation frequency of an offshore alternating-current system to an intermediate-frequency range (such as 100-200Hz), employing a diode uncontrolled rectification unit in a rectification station, and reducing the weight and size of equipment and a platform; aiming at the situation that direct-current voltage is raised due to the fact that power output of an intermediate-frequency DRU-MMC direct-current power transmission system is blocked due to faults of an onshore alternating-current system, an offshore alternating-current system voltage reduction strategy, an offshore alternating-current system frequency increasing strategy and a direct-current energy consumption device switching strategy are cooperatively called in a layered mode, a progressive protection mechanism is formed, and the recovery sequence of the strategies is emphasized. The method is easy to implement, high in reliability, capable of simulating the voltage change characteristic when the DRU-MMC system has the direct current side fault, high in universality and high in application value in actual engineering.

The invention discloses a power amplification module and a control method and system thereof, and belongs to the technical field of plasma generators. Wherein the PDM driving unit adopts a multi-phase PDM voltage reduction amplitude modulation technology and is used for generating two paths of symmetrical and complementary RF driving signals from an external RF driving signal through dead zone delay and logical operation; the BUCK voltage regulating unit comprises a plurality of BUCK circuits connected in parallel and is used for reducing input direct-current voltage into amplitude-modulated direct-current voltage; the RF driving unit is used for generating two paths of symmetrical and complementary RF driving signals; and the H-bridge conversion unit is used for receiving two paths of symmetrical and complementary RF driving signals generated by the RF driving unit and inverting the amplitude-modulated direct-current voltage supplied by the preceding-stage BUCK voltage regulating unit into a radio-frequency power signal to be output to a load. According to the power amplification module, the control method and the control system provided by the invention, the contradiction and unification of high-frequency response and ultra-low loss are realized through the mutual synergistic effect of the multi-phase PDM modulation and the D-type power amplifier topological structure.

The application relates to the technical field of motor control, and discloses a low-voltage motor based on segmented threshold PWM control, which comprises a motor shell, a motor tail cover arranged at the tail of the motor shell, a control circuit board arranged at the middle of the motor tail cover, a device assembly arranged on the surface of the control circuit board, wherein the device assembly comprises a microcontroller arranged on the surface of the control circuit board, the microcontroller is internally provided with a control system, and the device assembly further comprises a PWM signal input unit, a power input and filtering unit, a voltage reduction and stabilization unit, a reverse electromotive force and voltage sampling unit, a motor power driving unit, a current sampling unit and a temperature detection unit arranged on the surface of the control circuit board. The application utilizes segmented threshold control, closed-loop speed regulation architecture and dynamic threshold reconstruction logic to realize shielding of instruction jitter and accurate speed regulation, and the current determination boundary is reconstructed in real time through the speed deviation and the running state, so that the transient response capability of the motor and the hardware safety and reliability under all working conditions are considered.

The utility model discloses a silicon carbide drive circuit with miller clamping function relates to semiconductor drive circuit technical field, the utility model discloses a power module, drive module, control module and power module, power module is used for converting external 24V power supply into 5V voltage and isolated 15V voltage, and the power supply is powered for drive chip input end and output drive end, drive module is used for the differential signal processing amplification MCU sends to the drive voltage of SIC MOS, the utility model discloses circuit can when the current passes through miller capacitor voltage not through drive resistance directly connects ground, makes the current quick release to the voltage reduction below Vth prevents the false opening, in addition, this circuit can also detect the overcurrent condition of SIC MOS, when the current exceeds the set value, closes drive output, and simultaneously possesses chip and drive voltage detection function, when voltage is unstable, sends signal to MCU and closes drive output.

The invention relates to the technical field of underground sensor equipment, in particular to an underground pipe string acceleration measuring instrument which comprises a cylindrical shell and a main control board, and the main control board is packaged and fixed in the shell and connected with a ground control instrument through a cable. A single chip microcomputer, a primary voltage conversion circuit, a secondary voltage conversion circuit, a constant-current diode, an accelerometer and a step-down circuit are loaded on the main control board; for a measuring instrument for judging whether the setting and perforation operation of a bridge plug is successful or not by using acceleration data, when the voltage of an underground cable is insufficient during ignition of an igniter wire, the detection of the acceleration generated during setting or perforation of an underground perforating gun cannot be carried out; an energy storage capacitor E1, an energy storage capacitor E2, a primary voltage conversion circuit and a secondary voltage conversion circuit are innovatively introduced, and a capacitor energy storage scheme is adopted to solve the problem of input voltage drop caused by perforation ignition.

The invention belongs to the field of circuit system control, and particularly relates to a power supply circuit system. Comprising a first voltage conversion unit, a second voltage conversion unit and a third voltage conversion unit, the first voltage conversion unit is electrically connected with the power supply end, the second voltage conversion unit and the third voltage conversion unit and used for conducting voltage reduction conversion on power supply voltage obtained by the power supply end to generate first conversion voltage and supplying power to the second voltage conversion unit and the third voltage conversion unit through the first conversion voltage. The second voltage conversion unit is used for being coupled between the first voltage conversion unit and a controller of the electric energy meter and carrying out voltage reduction conversion on the first conversion voltage to obtain second conversion voltage, and the second conversion voltage serves as voltage supplied to the controller to enable the controller to be powered on and work; the third voltage conversion unit is used for being coupled between the first voltage conversion unit and the communication module and carrying out voltage reduction conversion on the first conversion voltage to obtain third conversion voltage, and the third conversion voltage serves as voltage supplied to the communication module to enable the communication module to be powered on and work.

The utility model relates to a bridge support appearance inspection device, which comprises a walking track assembly, a bridge support appearance inspection device and a bridge support appearance inspection device, the walking track assembly comprises a walking track, a track support, a track height adjusting nut and a fixing nut unit, and the track support is connected with a bridge pier through the track height adjusting nut and is fixed through the fixing nut unit; the transmission assembly comprises a lateral wheel, a wheel supporting structure, a stepping motor and a tooth-shaped belt. The apparent image acquisition assembly comprises a camera; the development board is used for controlling operation of the stepping motor and shooting of the camera and uploading data; the power supply assembly comprises a lithium battery, a wireless charging module and a voltage reduction module; the transmission assembly, the apparent image acquisition assembly, the development board and the power supply assembly are all arranged on the walking track assembly. Compared with the prior art, through high-efficiency and low-cost automatic inspection, the bridge inspection system flexibly adapts to complex scenes, realizes high-precision detection and data management, and prolongs the service life of a bridge.

A battery diagnosis method according to one embodiment disclosed in the present document may comprise the operations of: providing a battery device including a plurality of battery cells; measuring the voltage of each of the plurality of battery cells; providing a composite voltage by processing the plurality of voltages; determining first specific battery cells of which the voltage reduction rates in a first period are greater than the reduction rate of the composite voltage; determining second specific battery cells of which the voltage reduction rates in a second period are greater than the reduction rate of the composite voltage; and generating a notification if at least some of the first specific battery cells and the second specific battery cells are identified.

The invention discloses an on-load voltage regulation distribution transformer with series converter chains bearing partial power, which is characterized by comprising a group of three-phase series converter chains and a three-phase industrial frequency transformer, the three-phase series converter chain is used for three-phase voltage regulation and comprises three converter sub-chains and N4 three-phase converter sink chains, and N4 is equal to 0 or 1; the three-phase industrial frequency transformer is used for isolating and reducing voltage and providing an energy transfer port for maintaining energy conservation of the three-phase series converter chain, the three-phase industrial frequency transformer comprises 3N0 + 3N1 + 3N2 + 3N2 + 3N4 primary windings and three secondary windings, and N0 is greater than or equal to 0; the invention solves the problems of short service life of the contact and power supply interruption of the sensitive load, and realizes continuous voltage regulation with lower equipment cost.

The invention provides an ultra-wide voltage regulation stable output circuit which comprises a BUCK power supply module and a main power supply module. The main power supply module comprises a DCDC deformation control unit and a transformer output unit, the transformer output unit comprises at least two transformers, and the transformers are connected in a manner that primary sides are connected in parallel and multiple sides are connected in series, so that the output voltage of a transformer sub-circuit is adjusted according to a PWM2 signal. The ultra-wide voltage regulation stable output circuit has an ultra-wide voltage regulation range, stable output can be realized, a two-stage power supply topological structure is adopted, bus voltage reduction or direct connection can be realized by utilizing the first-stage BUCK power supply module, and the output voltage of the bus can be reduced by utilizing the second-stage BUCK power supply module. And the second-stage main power supply module is utilized to realize adjustable output in a larger range and stable output, so that the applicability and reliability of the circuit can be effectively improved, and the use requirements of different power supplies are met.

1. Name of the designed product: voltage reduction line (H530 with push switch, with voltage display). 2. Use of the designed product: used for powering electronic products on cars. 3. Design points of the designed product: in shape. 4. Picture or photo best indicating the design points: perspective view 1.

Various embodiments include methods performed by a processor system of a computing device for dynamically adjusting voltages for client components. The processor system may identify a potential current profile for a client use case, identify a voltage reduction for the client use case, and transmit the voltage reduction for the client use case to a system power manager. The processor system may identify the potential current profile for the client use case based on a maximum current for the client and a potential maximum current for the client use case. The processor system may cause the system power manager to reduce a client voltage to a voltage level that maintains client voltage at a level greater than a minimum client voltage during a voltage droop caused by a potential maximum current for the client use case.

The invention discloses a dual SIM card switching circuit, device and system, the dual SIM card switching circuit comprises a processing chip, a step-down circuit, a first capacitive reactance circuit, a connection circuit and an SIM module, the SIM module is connected with the processing chip and the two SIM cards, the step-down circuit is provided with a step-down voltage stabilizer, the connection circuit is provided with a one-way TVS tube and two bidirectional TVS tubes, and the two bidirectional TVS tubes are connected with the processing chip. One end of the one-way TVS tube and one ends of the two bidirectional TVS tubes are all connected with the step-down voltage stabilizer, the other end of the one-way TVS tube and the other ends of the two bidirectional TVS tubes are all grounded, one end of the first capacitive reactance circuit is connected with the step-down voltage stabilizer, and the other end of the first capacitive reactance circuit is electrified. Through the switching circuit of the double SIM cards, the switching of two operator networks is realized, the reliability and continuity of the network are improved, the device cost is reduced, the adaptability is strong, the circuit complexity is effectively reduced, and the stability and reliability are improved.

The application provides an amplifier current-limiting control method for fusing power regulation and load characteristic monitoring, comprising: realizing controllable front-stage signal through differential input and band-pass clamping, establishing voltage, current and multi-point temperature monitoring and combining overvoltage detection to generate out-of-limit indication, setting voltage and current upper limit in silicon-controlled voltage regulating module and executing voltage reduction and current limiting, realizing orderly switching through front-stage shutdown and relay stable control when impedance gear is switched, keeping front-stage closed and shutting down power drive when out-of-limit continues to exist, and until monitoring quantity recovers to safe range. Through the collaborative design of "source power limiting, state monitoring, orderly switching and linkage protection", the application effectively suppresses transient impact, shortens protection response time, reduces distortion accumulation, and realizes the unity of high-power output and high reliability of wide-band multi-gear amplifier.

The utility model provides a combined coupling network based on switch switching, comprising a resistor module used for voltage reduction and a capacitor module used for filtering, the resistor module is connected with the capacitor module through a first switch module; the resistor module comprises a plurality of resistor combinations of CN M2, CN M3 and CN M4, and the first switch module is used for controlling the type and number of the resistor combinations connected with the capacitor module in the resistor module. According to the utility model, a plurality of coupling networks can be combined into one, so that the production and later maintenance cost is saved.