123results about How to "Low power" patented technology

The application discloses a kind of OFDM signal sidelobe reduction method and system suitable for polar encoding, method includes: sending end is encoded into length M bit by polar code encoder to length N information bit sequence;The element in by reordering device is rearranged to obtain by being arranged by split channel from good to bad order;Adjacent element in is modulated, and obtain;The first K elements of are mapped to the subcarrier in the middle of sending signal, and the last L-K elements are sequentially mapped to the subcarrier on both sides, and the power of L-K signals on both sides of subcarrier is reduced;IDFT conversion is carried out, and it is sent to carrier frequency modulation.The application can effectively reduce the sidelobe of sending signal, and does not affect receiving performance, and can further improve performance at high signal-to-noise ratio.

The invention provides an ultrasonic transducer and ultrasonic cleaning equipment, the ultrasonic transducer comprises a piezoelectric exciter and a vibration radiant panel, the vibration radiant panel is fixed on the piezoelectric exciter, a power supply is electrically connected with the piezoelectric exciter, so that the piezoelectric exciter can generate longitudinal vibration, and the longitudinal vibration of the piezoelectric exciter can excite bending vibration of the vibration radiant panel. The longitudinal vibration sandwich type piezoelectric ultrasonic transducer solves the defects that an existing longitudinal vibration sandwich type piezoelectric ultrasonic transducer is small in radiation area, weak in longitudinal displacement amplitude, long in longitudinal size and the like to a great extent, and has the advantages of being small in space needed by operation, large in sound radiation area and sound radiation power, small in size and the like. The ultrasonic transducer can be widely applied to the application requirements of miniaturization and thinning of the installation space of the ultrasonic transducer. Meanwhile, the longitudinal bending displacement amplitude conversion ratio of the ultrasonic transducer can be influenced by the length, and / or the width and / or the thickness of the vibration radiant panel, so that the longitudinal bending displacement amplitude conversion ratio of the ultrasonic transducer is further improved through the size of the vibration radiant panel.

The utility model discloses a palm -centered device for promoting concentration, including mutually connected upper cover and lower cover, and install circuit board, battery, charging assembly, button subassembly, light component and drive assembly in lower cover inside, the lower cover inside is equipped with bottom plate, and bottom plate divides into the accommodation cavity and rotary cavity of upper and lower settings with inside lower cover, circuit board, battery, charging assembly, button subassembly, light component and motor install in the accommodation cavity, and battery is located circuit board below, and motor is located battery below, the rotary mechanism, touch head install in rotary cavity, the rotary mechanism includes rotating arm, and bottom plate center has established installation through -hole, motor pivot downwardly penetrates installation through -hole adjustable mode and connects rotating arm, touch head installs at one end of rotating arm, and rotating arm can adjust rotating radius along the length direction of itself, and can rotate with motor pivot as center. Through the guidance of tactile, sound and light feedback, reconstructs the concentration state of user.

The application discloses a self-rotating piston device, which comprises a piston body, a sealing and lubricating ring arranged on the outer circle of the piston body, two oblique sawtooth rings arranged at the front end of the piston body, and a movable counterweight arranged between the two oblique sawtooth rings. The sawteeth of the two oblique sawtooth rings are opposite, oblique and opposite, and staggered. The counterweight is elastically connected with the piston body. The front and rear ends of the counterweight are provided with sawteeth matched with the two oblique sawtooth rings respectively. Under normal state, the counterweight is engaged with the inner oblique sawtooth ring, and the piston completes the stop process of the stroke. The front end of the counterweight is in contact with the oblique sawtooth ring at the front end, and rotates upward by an angle and is engaged with the oblique sawtooth ring at the front end. After the counterweight is reset, the counterweight is in contact with the inner oblique sawtooth ring under the action of the elastic force, is engaged with the inner oblique sawtooth ring and rotates, and completes the rotation of one tooth pitch. After multiple strokes are completed, when the rotating torque generated by the counterweight is greater than the friction resistance of the piston body relative to the cylinder body, the counterweight drives the piston to rotate. The application can achieve the purpose that the sealing ring is uniformly stressed.

This utility model provides a horizontal electrode boiler, relating to the field of electrode boiler technology. It includes an electrode boiler body and a processing mechanism disposed on the outer side of the end of the electrode boiler body. The processing mechanism includes a base, which is fixedly connected to the outer side of the bottom end of the electrode boiler body. A cover plate is detachably connected to the outer side of the top end of the electrode boiler body, and a valve is installed on the outer side of one end of the electrode boiler body. The position of the electrode body is automatically adjusted by the buoyancy of a floating ring in the processing mechanism, maintaining the contact area of ​​the electrode body according to water level changes. Simultaneously, a hollow, high-temperature resistant ceramic floating ring is used to provide stable buoyancy and achieve dynamic power matching. A sliding rod displays the water level in real time as the height of the electrode body changes, allowing users to monitor it without additional tools.

The invention relates to the technical field of electric sofa energy-saving control systems, and discloses an electric sofa energy-saving control system and method based on pressure induction, the energy-saving control system comprises a pressure induction module, an electric adjusting module, a control module, an energy-saving management module, an intelligent temperature control module and a self-adaptive massage module; through the system and the method, electric energy waste can be reduced when the electric sofa is used, and the energy-saving effect is improved.

The utility model discloses a series power supply formula low -power consumption television receiving antenna signal amplifier circuit, including UHF signal input terminal anti -static and strong pulse circuit (1), UHF channel filter circuit (2), first -stage UHF channel amplification unit (3), second -stage UHF channel amplification unit (4). Further including amplifier UHF and VHF channel hybrid output circuit (11), VHF signal input terminal anti -static and strong pulse circuit (8), VHF channel filter circuit (9), power supply input rectifier filter circuit (6), voltage stabilizing and decoupling circuit (5), decoupling voltage division's front -stage series power supply circuit (7) and VHF amplification unit (10). Or including RF signal input channel filter circuit (13), first -stage RF channel amplification unit (14), second -stage RF amplification unit (15) and decoupling voltage division's front -stage series power supply circuit (7). The utility model discloses through series power supply mode, make the total current of amplifier equal the current of second -stage amplification unit, relative parallel type circuit saves nearly 50% power consumption, reduces the requirement to transformer power, thereby reduces the cost.

The utility model provides a photovoltaic assembly panel and a photovoltaic assembly, and belongs to the technical field of photovoltaic assemblies, a weight reduction cavity is arranged in the panel, and the weight reduction cavity penetrates through two opposite side surfaces of the panel. According to the utility model, the weight reduction cavity is arranged in the panel to reduce the weight of the panel, so that the self weight of the photovoltaic module can be reduced, the problem that the photovoltaic module is bent downwards due to the heavy weight of the panel is avoided, and the power reduction of the module due to the bending of the photovoltaic module can be further avoided; and the problem that the service life is shortened due to hidden crack defects caused by bending is solved. The weight reduction cavity is arranged in the panel, so that the panel has bending resistance, and the bending resistance of the photovoltaic module is enhanced; the weight reduction cavity is formed in the panel, refraction can be generated when sunlight irradiates, the light absorption capacity of the assembly is improved, and therefore the power of the assembly is improved; and the weight reduction cavity is arranged in the panel, so that the transportation cost and the installation difficulty of the photovoltaic module can be reduced.

The application provides a synthetic aperture radar active composite jamming method and system, the method comprising: acquiring intermediate frequency radar signals to be jammed, radar related parameters and control parameters; calling DSP and multiple FPGA calculation boards to calculate modulation coefficients corresponding to each false scattering point according to pre-downloaded deception templates and radar related parameters; generating deception jamming signals corresponding to the intermediate frequency radar signals according to the intermediate frequency radar signals and the modulation coefficients corresponding to each false scattering point; generating suppression jamming signals corresponding to the intermediate frequency radar signals according to the control parameters; and determining composite jamming signals corresponding to the intermediate frequency radar signals according to the deception jamming signals and the suppression jamming signals corresponding to the intermediate frequency radar signals. The application can obtain composite jamming signals, has better jamming effect, is not easy to expose the position of the jammer, and has lower cost of the jammer. The signal processing architecture of DSP and FPGA is adopted, the calculation performance of the system is improved, and the real-time performance of system simulation is ensured.

The utility model provides a kind of annular cutting equipment, it is related to cutting field, including main support, rotary support, radial feed mechanism, it is characterized by: the main support is composed of base, linear motion mechanism, drive mechanism, gravity balance system, the drive mechanism is composed of rack, first speed reducer, gear and first servo motor, the rack is fixed on base by bolt, the first speed reducer is fixed on linear motion mechanism, the gear is fixed on the output shaft of first speed reducer and is engaged with rack, the first servo motor is installed in the input end of first speed reducer, drive gear linearly moves along rack by first speed reducer speed reduction and torque increase, in the utility model, each transmission part adopts speed reduction and torque increase mechanism, under the premise of guaranteeing output torque, the whole machine power is reduced, by adopting gravity balance mechanism, the load caused by further reducing gravity is reduced, to realize the maximization of whole machine driving efficiency.

This invention discloses a linked structure cavity for improving the SPL (Surface Placement) of musical glass, comprising an active device, a microwave cavity, a linked nano-cushion, and a metasurface crystal layer. The active device is disposed on the original glass, and a metasurface crystal layer is horizontally disposed on its end face away from the original glass. A ring-shaped microwave cavity is disposed between the metasurface crystal layer and the original glass, relative to the outside of the active device. The microwave cavity is spaced around the active device and forms a circular region with the metasurface crystal layer and the original glass. A linked nano-cushion is disposed between the metasurface crystal layer and the active device, and the linked nano-cushion and the microwave cavity are configured to not interfere with each other. This multi-dimensional combination of the linked nano-cushion, the microwave cavity, and the metasurface crystal layer forms a strong coupled planar sound field, improving the SPL value of the musical glass. This invention improves the SPL value of musical glass through the multi-dimensional combination of the microwave cavity, the linked nano-cushion, and the metasurface crystal layer.

A seawater frequency conversion system suitable for an iCER main machine is characterized in that a high-position sea chest and a low-position sea chest are respectively connected with an iCER system plate heat exchanger and a central plate heat exchanger through a seawater main pipe, and the high-position sea chest and the low-position sea chest are respectively provided with a seawater pump; and after sequentially entering an iCER system flue gas cooler and an iCER system fresh water circulating water cabinet through a pipeline, returning to the central plate heat exchanger through an iCER low-temperature fresh water lightering pump. A first temperature sensor is arranged at a smoke outlet of an iCER system smoke cooler and used for monitoring the actual temperature T2 of smoke exhaust gas of a host, a host iCER system control box collects the T2, the T2 is sent to a seawater pump frequency conversion control box after being collected, and the seawater pump frequency conversion control box compares the T2 with the required smoke exhaust temperature T1 and controls the conveying frequency of a seawater pump. According to the seawater frequency conversion system control method, normal operation of the low-temperature fresh water cooling system and the iCER system of the ship can be guaranteed at the same time, and the power of the seawater pump can be reduced to the maximum extent.

The utility model provides a centrifugal dehydrator for kitchen waste, and belongs to the field of solid-liquid separation of kitchen waste. The problem that residual juice splashes in the working process of an existing kitchen waste centrifugal dehydrator is solved. The device comprises a shell rack, a dewatering cylinder and a driving motor, a feeding port is formed in the top of the shell rack, a horizontal support is arranged in the shell rack, the driving motor is arranged on the horizontal support, the top of the driving motor is connected with the dewatering cylinder, the dewatering cylinder comprises a material receiving disc, an inner cylinder and a filter cylinder, the top of the inner cylinder is connected with the material receiving disc, and the inner cylinder is connected with the filter cylinder. The inner-layer cylinder is connected with a driving motor through a shaft sleeve, a filter cylinder is arranged outside the inner-layer cylinder, a feeding port is formed in an upper end opening of the filter cylinder, the feeding port is located over the material receiving disc, a plurality of blades which are evenly distributed in the circumferential direction are arranged at the top of the inner wall of the filter cylinder, and a plurality of rows of holes are evenly distributed in the surface of the filter cylinder. The kitchen waste dehydrator is mainly used for dehydrating kitchen waste.

This invention relates to the field of aquaculture water treatment technology, and discloses a multi-stage purification and filtration system and filter dam device for fish ponds. The system includes a multi-stage flow-guiding filter dam, a piezoelectric-biocoupled reactor, and an adaptive resonant control system. The piezoelectric-biocoupled reactor is filled with piezoelectric composite biological filler. A micro-electric field is generated by ultrasonic excitation, which works synergistically with the biofilm to degrade pollutants. The adaptive resonant control system monitors the acoustic impedance value within the piezoelectric-biocoupled reactor in real time and adaptively adjusts the ultrasonic output parameters based on deviation using a differential algorithm, achieving dynamic control and in-situ renewal of the biofilm thickness. The system also includes anoxic autotrophic denitrification and reoxygenation reflux devices at the back end. Through the microscopic coupling of piezoelectric catalysis and biodegradation, and intelligent closed-loop feedback control, the system achieves simultaneous and efficient removal of recalcitrant organic matter and ammonia nitrogen, ensuring the high activity and long-term stable operation of the purification system.

The invention relates to a building block type ice melting device active current sharing system and a control method, and the system comprises a plurality of ice melting rectification devices which are connected in parallel to a to-be-ice-melted line, and a bidirectional Buck-Boost current sharing module is connected in series between the DC output end of each ice melting rectification device and the to-be-ice-melted line; and the current sharing controller is used for collecting the output voltage value and the output current value of each ice-melting rectifying device in real time, judging whether the plurality of ice-melting rectifying devices share the current or not, calculating the current sharing control quantity and generating a compensation voltage instruction when the plurality of ice-melting rectifying devices do not share the current, and adjusting the corresponding bidirectional Buck-Boost current sharing module through the compensation voltage instruction, so that the plurality of ice-melting rectifying devices realize the current sharing. High-precision current sharing and effective circulating current suppression can be realized under the condition of not changing the structure of the existing main circuit, and the circuit is suitable for a large-capacity and multi-machine parallel mobile ice melting equipment scene and has a remarkable engineering application value.

This disclosure relates to a display device and a method of manufacturing the display device. The display device described herein includes: a substrate; a plurality of transistors disposed on the substrate; a plurality of light-emitting elements disposed on the plurality of transistors and including an anode electrode, a light-emitting layer, and a cathode electrode; a plurality of color filters disposed on the plurality of light-emitting elements; a plurality of high-refractive-index patterns arranged to be spaced apart from each other to correspond to each of the plurality of color filters and including a plurality of first protrusions located on an upper surface; an air layer located in regions where the plurality of high-refractive-index patterns are spaced apart from each other; and a low-refractive-index layer disposed on the plurality of high-refractive-index patterns and the air layer, and having a refractive index lower than that of the plurality of high-refractive-index patterns.

This invention discloses a time-delay-resistant and energy-saving motion control method and system for a flat-type all-wheel-drive AUV. The invention includes: constructing a six-degree-of-freedom hydrodynamic model of the AUV based on submarine maneuverability theory; identifying the setpoint pure time delay and rotational acceleration characteristics of the propeller through multi-condition testing, and constructing a nonlinear propeller dynamic model including a pure time delay element and a nonlinear rotational speed dynamic response model; constructing a composite control architecture integrating a dual-loop PID controller, a Smith predictor, and a model reference adaptive controller (MRAC); using the Smith predictor to perform explicit time delay compensation for the vertical plane motion subsystem, and using MRAC to update the adaptive gain online to compensate for model mismatch. This invention effectively suppresses high-frequency pitch angle jitter, reduces ineffective commutation movements and energy consumption of the propeller, and significantly improves the high-speed operational stability and endurance of the flat-type AUV.

A display device according to one aspect of this disclosure includes: a substrate including a plurality of sub-pixels; a plurality of transistors disposed on the substrate; a plurality of reflective electrodes disposed on the transistors; a plurality of bonding layers bonded to some of the reflective electrodes and comprising a conductive black material; a plurality of light-emitting diodes disposed on the plurality of bonding layers to correspond to the plurality of bonding layers, and comprising a first electrode, a first semiconductor layer, an active layer, a second semiconductor layer, and a second electrode; and a plurality of reflective layers disposed on the plurality of bonding layers, electrically connected to the plurality of reflective electrodes respectively, and in contact with the plurality of light-emitting diodes. Therefore, the absorption of light emitted from the light-emitting diodes by the bonding layers is suppressed, and the light extraction efficiency can be improved.

This invention aims to provide a liquid food mixing tank that achieves uniform material mixing and reduces tangential flow resistance. The invention includes a tank body with several baffle groups arranged vertically along the inner wall; a cover plate located at the top of the tank body; a stirring assembly located in the middle of the cover plate for stirring the solution; and a filter screen located at the top of the tank body for filtering and preventing impurities from falling in. The baffle groups include several equally spaced intercepting baffles, with a flow-blocking column between adjacent intercepting baffles. By employing the equally spaced intercepting baffles and flow-blocking column structure, the liquid material rotates under the action of the stirring assembly. Material flowing tangentially along the side wall of the tank impacts the intercepting baffles, changing its flow direction and improving material cohesion. The flow openings formed by the intercepting baffles reduce the amount of liquid material blocked, effectively reducing resistance to the stirring assembly and thus reducing the power required for the stirring process. This invention applies to the technical field of liquid mixing tanks.

The utility model discloses a drainage assembly of oxygen generator, aims at solving the problem of water content accumulation in compressed air reduces oxygen production efficiency and health safety. The component includes cyclone dehumidification mechanism, condensation dehumidification mechanism and adsorption dehumidification mechanism. Cyclone dehumidification mechanism separates large particle water drop through conical cylinder, and condensation dehumidification mechanism adopts vertical serpentine condenser pipe, and is matched with thermoelectric refrigerator and fin condenses water content, and condensate water is automatically discharged through first drain pipe and water collecting pipe, and adsorption dehumidification mechanism absorbs residual moisture with porous silicon dioxide. Each mechanism is smoothly connected through conical pipe and connecting pipe, realizes multistage dehumidification. The component can effectively reduce air moisture content, prevent condensate water retention, reduce microbial breeding, guarantee output air quality, and simultaneously give consideration to low energy consumption and operation stability, is applicable to medical oxygen generator, and has higher practical value.

This invention provides a residual-temperature assisted multi-heat-source synergistic modulation welding device and method, relating to the fields of laser welding and friction stir welding, aiming to solve the problems of easy forming defects and performance degradation in welding aluminum-lithium alloys. The device outputs a composite heat source through a laser-arc composite heat source system to melt the welding wire and stabilize the molten pool with deep penetration on the front side of the workpiece; a motion system controls the movement of the friction stir heating system; a residual-temperature-airflow synergistic auxiliary temperature control system dynamically adjusts the temperature of the solid phase region of the molten pool; a monitoring and sensing system collects physical field modal data in real time and uploads it to the control system; a flexible tooling system is used to clamp the workpiece with variable curvature; the friction stir heating system applies dynamic shearing and mechanical upsetting forces in the residual high-temperature region on the back side, effectively improving defects such as back-side collapse and burn-through in the weld of the workpiece with variable curvature. The residual-temperature assisted multi-heat-source synergistic modulation welding method is applied to the residual-temperature assisted multi-heat-source synergistic modulation welding device.

The patent application belongs to the technical field of energy storage equipment, and particularly relates to a side direct-cooling energy storage system, which comprises a cabinet body, a direct-cooling unit, a circulating pipeline and a battery pack, the upper part of a partition plate is a battery cabin, the lower part of the partition plate is an electrical cabin, the battery pack is arranged in the battery cabin, the direct-cooling unit is arranged in the electrical cabin, a plurality of battery modules are installed on a bottom plate, and an upper cover is detachably connected with the bottom plate; the circulating pipeline comprises an inlet pipe, an outlet pipe, a cooling pipe and an adapter structure, the cooling pipe is arranged along each battery module in sequence and is in contact with both sides of each battery module, both ends of the side cooling pipe extend out of the upper cover and are respectively communicated with the inlet pipe and the outlet pipe through corresponding adapter structures; refrigerant flows into the cooling pipe through the inlet pipe, and after passing through the battery pack, the refrigerant flows back to the liquid cooling unit through the return pipe; the purpose lies in that the heat dissipation effect of the refrigeration system is improved, the condensation risk of the battery pack is reduced, and the installation process of the battery pack is simplified.

This utility model discloses a multi-power driven mud pump, including a base with pump hydraulic end assemblies arranged on the base. Its key feature is that it further includes a multi-power variable speed drive mechanism, which is located on the base and beside the mud pump. The multi-power variable speed drive mechanism includes one or two combined gearboxes, each equipped with 2-6 motor gearbox assemblies. The output shafts of the multiple motor gearbox assemblies are connected to multiple input shafts on the corresponding combined gearboxes via couplings, and the output shafts of the multiple motor gearbox assemblies are circumferentially distributed around the output shaft of the combined gearbox. This device has a compact structure, is lightweight, has low purchase cost, high operating efficiency, low transportation cost, and is easy to maintain.

This invention provides an in-situ heating and electrical testing apparatus and method for scanning electron microscopy (SEM). The apparatus includes a T-shaped sample stage, an in-situ heating and electrical testing chip, a probe card, wires, a vacuum flange with a BNC interface, a signal source meter, pins, and fixing studs. The in-situ heating and electrical testing chip is placed on the T-shaped sample. The probe card presses into contact with the heating and testing electrodes on the in-situ heating and electrical testing chip and leads out wires, simultaneously fixing the chip. The fixing studs secure the probe card to the T-shaped sample stage. The vacuum flange with the BNC interface connects the probe card and the signal source meter via wires. This invention provides in-situ heating, electrical testing, and microstructure observation functions for SEM, offering advantages such as rapid heating and cooling, low thermal drift, and low electromagnetic interference. It provides a platform for testing the performance of micro and nanomaterials and an experimental platform for preliminary screening of transmission electron microscopy (TEM) samples.

A computer-implemented method for generating synthetic data describing a sample may include: processing, by a system operatively coupled to a processor, sample information describing a set of original features of the sample, thereby producing processed model input information; and generating composite image data by analyzing a model and based on the processed model input information, the composite image data being usable to generate a composite image and describing at least a portion of the set of original features. The computer-implemented method may also include generating, by the system, a composite image of dummy samples based on the composite image data, the composite image having at least one dummy feature different from and based on the set of original features.

According to one embodiment of the disclosure, there is provided a display device including a display panel in which a plurality of pixels are disposed, a printed circuit board attached to a periphery of an end portion of the display panel, a first plate positioned below the display panel, and a second plate positioned below the first plate, wherein the printed circuit board includes at least one through-hole that penetrates the printed circuit board in a thickness direction, and a lower surface of the second plate is exposed in an area in which the through-hole is disposed.

This invention relates to the field of compression refrigeration technology, and discloses an air conditioning heat pump system and an air conditioner. The air conditioning heat pump system includes a compressor and a temperature regulating component; the temperature regulating component is installed on the outside of the compressor; during the start-up phase, the temperature regulating component heats the compressor; during the stable operation phase, the temperature regulating component cools the compressor. By installing a temperature regulating component on the outside of the compressor, this invention heats the compressor during the start-up phase, which is beneficial for the temperature rise of the lubricating oil inside the compressor and the uniformity of the overall machine temperature, facilitating the rapid attainment of compressor start-up conditions and reducing start-up failures. During the stable operation phase, the temperature regulating component cools the compressor, which helps to improve the service life of the motor inside the compressor, reduce the migration of refrigerant and lubricating oil inside the compressor, improve the compression process of the system, increase cooling and heating capacity, and reduce power consumption, thereby improving the system's energy efficiency under the premise of a fixed heat source.

The utility model provides a novel negative pressure conveying system, including feed hopper, vacuum feeding machine and negative pressure fan, and feed hopper and vacuum feeding machine are connected through material conveying pipeline between, and vacuum feeding machine and negative pressure fan are connected through gas supply pipeline between, along the direction of conveyance, and the air supplementing valve and the broken empty valve are set gradually on material conveying pipeline. This novel negative pressure conveying system installs the broken empty valve in material conveying pipeline, can effectively reduce the material accumulation in material conveying pipeline in the process of unloading.

This invention provides a device for pulse welding of workpieces with solder. According to the order of the welding wire's movement and position, it comprises, in sequence, a welding wire spool and traction wheel at the top, a welding wire passage pipe in the middle, a welding wire conveying mechanism at the bottom, and a horizontally placed workpiece conveying platform at the bottom. A DC high-voltage power supply is connected between the workpiece conveying platform and the wire feed wheel. The workpiece conveying platform and the workpiece are in electrical contact, and the driven wheel and the welding wire are in electrical contact. When the welding wire is pulled downwards by the wire feed wheel and contacts the workpiece on the workpiece conveying platform, the high temperature generated by the discharge instantly melts a section of the welding wire, forming a weld point on the workpiece. The workpiece of this invention is virtually free from melting and oxidation corrosion; the device consumes little energy, and the welding wire melts to form a weld point extremely quickly.

A 300W gallium nitride belt DSP amplification circuit comprises an input selection circuit, an ADC circuit and a power amplification circuit. The input selection circuit comprises an analog switch chip U02 and an analog switch chip U03, and a line and a DANTE signal convert control voltage through a twelfth pin and a thirteenth pin of the analog switch chip U02 and the analog switch chip U03 to form a truth table to meet switching; the ADC circuit comprises an audio converter chip U2, and the switched analog audio signal is converted into a digital signal through the audio converter chip U2; the power amplifier circuit comprises a monaural gallium nitride D-type power amplifier chip U3, a digital signal is subjected to power amplification after I2S communication through a third pin, a fourth pin and a fifth pin of the monaural gallium nitride D-type power amplifier chip U3, and a ninth pin and a tenth pin of the monaural gallium nitride D-type power amplifier chip U3 are respectively communicated with a PC I2C for DSP tuning.