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37results about How to "Short connection" patented technology

Packaging device of compact single-phase integrated drive circuit and single-phase integrated drive circuit

The invention provides a packaging device of a compact single-phase integrated drive circuit. The packaging device comprises wire-leading frame, a plurality of first chip paddles formed on the wire-leading frame, first grid electrode drive devices, second grid electrode drive devices, first upper arm transistors, first lower arm transistors, second upper arm transistors, second lower arm transistors, signal pins, and power pins, wherein each first grid electrode drive device, each second grid electrode drive device, each first upper arm transistor, each first lower arm transistor, each second upper arm transistor, and each second lower arm transistor are arranged on each first chip paddle, and each signal pin and each power pin are led from each first chip paddle and arranged oppositely on tow sides of the wire-leading frame. The invention further provides the single-phase integrated drive circuit, aims at solving the problems that drive circuit devices formed by discrete components are difficult in installation and poor in reliability due to large amount, and is particularly suitable for solving the problems that center distances of the pins are reduced due to the fact that packaging size is limited in integrated drive circuits, and thereof the pins are damaged with one another due to the fact that the center distances are not enough.
Owner:HANGZHOU SILAN MICROELECTRONICS

High-stability low-noise GPS (Global Positioning System) active antenna

The invention belongs to the technical field of radio frequency communication and provides a high-stability low-noise GPS (Global Positioning System) active antenna for solving the problems of difficulty in miniaturization and high cost of a GPS active antenna in the prior art due to the adoption of discrete components. A circuit composition of the high-stability low-noise GPS active antenna comprises two low-noise amplifiers, a radio frequency band-pass filter, a low-noise LDO (Low Drop Out Regular), a reference source and a microstrip patch antenna. According to the invention, a module comprising the low-noise amplifiers, the reference source and the low-noise LDO is integrated into a low-noise amplifier chip by adopting an integration technology, the integral GPS active antenna is formed by adopting the band-pass filter and a small amount of peripheral circuits, the area of the active antenna is reduced, the cost is saved, the power consumption is reduced and the reliability and stability are improved. The GPS active antenna provided by the invention easily meets the requirement on the miniaturization and is particularly suitable for integrating functional modules of mobile communication products such as a mobile phone, a PDA (Personal Digital Assistant), a vehicle-mounted navigator and the like, into one system.
Owner:HANGZHOU RUIMENG TECH

Street lamp adopting LED light source

A street lamp adopting an LED light source comprises a lamp housing, a reflecting shade, a light-emitting port, a light-transmittable shade and an LED light source module, wherein the reflecting shade is arranged in the lamp housing; the light-emitting port is arranged on the lamp housing; the light-transmittable shade is arranged at the light-emitting port; the LED light source module is fixed in the reflecting shade, and comprises a first stamping sheet metal, a second stamping sheet metal, a third stamping sheet metal, a plurality of LED chips and a control circuit board; the LED chips are arranged on the second stamping sheet metal; the control circuit board is connected with the LED chips; the second stamping sheet metal is provided with a mounting port used for fixing the control circuit board; a plurality of openings for limiting an area with point fluorescent powder glue are formed on the third stamping sheet metal; the LED chips are stuck on the second stamping sheet metal in positions corresponding to the openings; and the first stamping sheet metal, the second stamping sheet metal and the third stamping sheet metal are fixed with one another through a connecting mechanism. The street lamp adopting the LED light source has the advantages of good heat dissipation performance, low cost and long service life.
Owner:厦门宝晨照明科技有限公司

Base station connection information generation method and switching method

The invention relates to the communication field, and discloses a method for generating connection information of a base station and a switching method. The present invention is applied to a terminal device that follows a vehicle, and the base station connection information generation method includes the following steps: obtaining the driving information of the vehicle according to the received driving parameters of the vehicle; the driving information includes at least the driving route; according to the driving route and the preset base station map , to generate the base station connection information corresponding to the driving path; the base station connection information at least includes a sequential list of connected base stations; wherein, the sequential list of connected base stations includes multiple connected base stations, and the sum of the effective coverage paths of each connected base station covers the driving path; wherein, the effective coverage path of each connected base station is the overlapping area between the signal area of ​​each connected base station and the driving path. The invention enables the terminal equipment traveling with the vehicle to quickly connect to the base station when moving at a high speed, and avoids being in a repeated connection state for a long time.
Owner:SHANGHAI YUDE COMM TECH

Chip type wireless audio receiving and transmitting integrated system

The invention relates to the technical field of micro-electronic chip packaging, and discloses a chip type wireless audio receiving and transmitting integrated system. A packaging shell and a substrate plate are matched to form standard appearance packaging, chips for collecting processing and transmitting audio signals are placed in the packaging shell, a paster is installed on the substrate plate, and the chips are electrically connected based on the bonding technology. The chips for collecting processing and transmitting the audio signals are integrated to the same PCB based on the SIP technology and are packaged to the packaging outer shell to form a micro integrated system with the audio signal collecting function, the audio signal processing function and the audio signal transmitting function. Compare with a traditional detectaphone, a micro type interceptor has the advantages of being small in size, low in power consumption, easy to hide and the like.
Owner:上海企诺电子科技有限公司

Power supply method and system of LED display screen

The invention relates to a power supply method of an LED display screen, comprising the following steps of: firstly, carrying out alternating current-direct current rectification conversion on alternating current from an external alternating-current power supply and transmitting high-voltage and direct-current power obtained by conversion to a high-voltage and direct-current power supply bus; and then, respectively carrying out direct current-direct current voltage transformation on the voltage of the high-voltage and direct-current power supply bus according to working voltage required for each power consumption module on the LED display screen, and respectively inputting the transformed voltage to the corresponding power consumption modules of the LED display screen. The invention also relates to a power supply system of the LED display screen. The invention can improve power supply efficiency, reduce losses and lowering cost, simplify the structures of the power supply system and an application system thereof, improve the running reliability of the system, reduce the installation space required for the power supply system, and is convenient for wiring.
Owner:王小云

Dual-voltage power supply circuit and inverter welding machine comprising same

The invention discloses a dual-voltage power supply. The dual-voltage power supply comprises a power input end, a power output end, a control transformer, a power supply control circuit and a voltage detection circuit, wherein a rectifier circuit and a voltage-doubling circuit are connected in series between the power input end and the power output end; the control transformer is connected with the power input end; the power supply control circuit and the voltage detection circuit are connected with the control transformer; the power supply control circuit comprises a first relay and a second relay, wherein the first relay is arranged between the power input end and the control transformer, and the second relay is arranged among the power input end, the rectifier circuit and the voltage-doubling circuit; the control transformer is provided with a 220V primary winding and a 380V primary winding; and the voltage-doubling circuit comprises two groups of capacitor-resistor circuits which are connected in series with each other. An inverter welding machine can be used in the places with a power supply of 380 V or 220 V very conveniently; a good radiating effect is achieved; the connection wires among the components are the shortest; and a rectifier board adopts an integrated output piece, so that the faults of the rectifier board are reduced.
Owner:SHENZHEN ZHONGZHI INVESTMENT

Impact voltage generating device

The invention discloses an impact voltage generating device. The impact voltage generating device comprises a host computer, a body, a DC high voltage power source and an impact generation loop, wherein the DC high voltage power source comprises a transformer, a silicon stack and an output end, and the host computer is fixed in the body. The impact voltage generating device is characterized in that the DC high voltage power source employs the closed structure, the transformer and the silicon stack are fixed in the body, the DC voltage is transmitted by the output end to the impact generation loop, the impact generation loop is a modular structure composed of multi-level modules, and the modules in each level are fixed and connected in series through supporting insulators and fixing supports. The impact voltage generating device is advantaged in that the transmission overvoltage in the high voltage environment can be enhanced, and safety performance can be improved.
Owner:CHINA ELECTRIC POWER RES INST +1

User management method, server and computer readable storage medium

The embodiment of the invention discloses a user management method, a server and a computer readable storage medium. The method comprises the steps that the server acquires behaviors of audience clients in a live broadcast room; when the server detects that the behavior of the audience client conforms to a user management model, whether the network connection of the audience client is abnormal ornot is judged, wherein the user management model is a model generated according to malicious behaviors of a user; if so, the server detects the audience client side connected with the microphone through a long link heartbeat mechanism, and if it is detected that microphone connection between the audience client side and an anchor client side succeeds within a preset time interval, the server interrupts connection between the anchor client side and the audience client side. By implementing the method, the user management efficiency can be improved.
Owner:深圳市镜玩科技有限公司

Dual-voltage power supply circuit and inverter welding machine comprising same

The invention discloses a dual-voltage power supply. The dual-voltage power supply comprises a power input end, a power output end, a control transformer, a power supply control circuit and a voltage detection circuit, wherein a rectifier circuit and a voltage-doubling circuit are connected in series between the power input end and the power output end; the control transformer is connected with the power input end; the power supply control circuit and the voltage detection circuit are connected with the control transformer; the power supply control circuit comprises a first relay and a second relay, wherein the first relay is arranged between the power input end and the control transformer, and the second relay is arranged among the power input end, the rectifier circuit and the voltage-doubling circuit; the control transformer is provided with a 220V primary winding and a 380V primary winding; and the voltage-doubling circuit comprises two groups of capacitor-resistor circuits which are connected in series with each other. An inverter welding machine can be used in the places with a power supply of 380 V or 220 V very conveniently; a good radiating effect is achieved; the connection wires among the components are the shortest; and a rectifier board adopts an integrated output piece, so that the faults of the rectifier board are reduced.
Owner:SHENZHEN ZHONGZHI INVESTMENT

Optical module

The optical module provided by the invention comprises a circuit board and a light emitting assembly, wherein the circuit board is provided with a jack with an opening in one side; the light emitting assembly comprises a second emitting shell, an upper cover plate, a laser, a second light path translation prism and a light collimator, a clamping groove is formed in the outer side wall of the second emitting shell, the clamping groove is inserted into the insertion hole through the opening, the upper side of the clamping groove is located on the front side of the circuit board, and the lower side of the clamping groove is located on the back side of the circuit board; the second emission shell comprises a mounting groove, and the upper cover plate covers the opening side of the top surface of the mounting groove; one end of the mounting groove is provided with a notch, and the circuit board on one side of the jack extends into the notch for sealing connection; the laser is arranged in the mounting groove and is electrically connected with the circuit board extending into the notch; the second light path translation prism is arranged in the mounting groove and is used for upwards moving the laser beam on the front surface of the circuit board; one end of the optical collimator is inserted into the mounting groove, and the other end is hermetically connected with the optical fiber. According to the invention, through the unique structural design of the light emitting assembly, the light path is completely sealed and packaged.
Owner:HISENSE BROADBAND MULTIMEDIA TECH

Active noise reduction system, adaptive calibration analog filter circuit and earphone

The invention relates to an active noise reduction system, an adaptive calibration analog filter circuit and an earphone. The active noise reduction system comprises a microphone used for collecting environmental noise to generate a first audio signal; the first chip is used for preprocessing the first audio signal; an analog filter circuit and a second chip, at least part of the analog filter circuit is integrated on the second chip, and the analog filter circuit is used for carrying out filtering processing on the preprocessed first audio signal to form a de-noising signal with a phase opposite to that of the environment noise; the first chip is also used for receiving a second audio signal comprising the target audio, and mixing the second audio signal with the de-noising signal to forma mixed audio signal; and the loudspeaker is used for playing the mixed audio signal. According to the scheme, the number of devices installed on the circuit board is small, the space of the circuitboard is saved, product miniaturization can be achieved, parasitic parameters are reduced, time delay and power consumption can be reduced, and the signal-to-noise ratio can be increased.
Owner:WUXI ZGMICRO ELECTRONICS CO LTD

Power supply device

The invention provides a power supply device. The power supply device comprises a power supply cabinet, a plurality of radiators, and a power conversion circuit, wherein the power conversion circuit is located in the power supply cabinet; the power conversion circuit comprises at least one of an alternating current-direct current conversion circuit and an alternating current-alternating current conversion circuit; the alternating current-direct current conversion circuit at least comprises a first rectification module, a first inversion module, a first filtering module, a first transformer anda second rectification module which are electrically connected in sequence; the alternating current-alternating current conversion circuit at least comprises a third rectification module, a second inversion module, a second filtering module and a second transformer which are electrically connected in sequence; the first rectification module, the first inversion module, the second rectification module and a first capacitor unit in the alternating current-direct current conversion circuit and the third rectification module and the second inversion module in the alternating current-alternating current conversion circuit are all located in the sealed chamber. The waterproof, moistureproof and dustproof functions can be achieved, core elements cannot be eroded and damaged even if the device isused in a severe environment, and the application range of the device is greatly expanded.
Owner:ZHEJIANG KEENWOO TECH CO LTD

Street lamp adopting LED light source

A street lamp adopting an LED light source comprises a lamp housing, a reflecting shade, a light-emitting port, a light-transmittable shade and an LED light source module, wherein the reflecting shade is arranged in the lamp housing; the light-emitting port is arranged on the lamp housing; the light-transmittable shade is arranged at the light-emitting port; the LED light source module is fixed in the reflecting shade, and comprises a first stamping sheet metal, a second stamping sheet metal, a third stamping sheet metal, a plurality of LED chips and a control circuit board; the LED chips arearranged on the second stamping sheet metal; the control circuit board is connected with the LED chips; the second stamping sheet metal is provided with a mounting port used for fixing the control circuit board; a plurality of openings for limiting an area with point fluorescent powder glue are formed on the third stamping sheet metal; the LED chips are stuck on the second stamping sheet metal inpositions corresponding to the openings; and the first stamping sheet metal, the second stamping sheet metal and the third stamping sheet metal are fixed with one another through a connecting mechanism. The street lamp adopting the LED light source has the advantages of good heat dissipation performance, low cost and long service life.
Owner:厦门宝晨照明科技有限公司

Automatic line connection fixed system for firecrackers

The invention discloses an automatic line connection fixed system for firecrackers. The automatic line connection fixed system comprises a system main body, wherein a feeding hole is formed in the toppart of the system main body; a leading line inlet is formed in one side of the system main body; a waste material tube and a discharging hole are formed in the other side of the system main body; adetector is arranged in the system main body; a material passing tube is arranged in the detector; a partition plate is arranged at the bottom of the detector; an observer is mounted at the bottom ofthe partition plate; a transmission net is arranged at the bottom of the observer; a conveyor belt is arranged on the side surface of the transmission net through a pulley; a line connecting machine is arranged on the side surface of the conveyor belt; a fixed column is arranged at the bottom of the line connecting machine; a telescopic column is arranged at the bottom end of the fixed column; storage batteries are arranged on the side surface of the line connecting machine; a working motor is arranged on the side surface of the storage battery; heat dissipation holes are formed in the outer surface of the system main body; support legs are arranged at the bottom of the system main body; and therefore, the firecrackers with poor quality are removed by the detector in time, so that the quality of a complete pack of firecrackers is improved.
Owner:江西常驰实业有限公司

Flip-chip camera and manufacturing method thereof

A crystallization camera involves the field of cameras and production methods.There is a difficult and high technical technology with high production and high costs to solve the existing camera packaging structure, including: the first substrate, the second substrate, the camera nude, infrared filter, shell and lens module;The noodle circuit board has the first pads on both sides. The first pad on the front is equipped with the first electrical tile, and the first substrate is equipped with a chip hole that is consistent with the shape of the camera.The camera nude film is the inverted film structure, embedded in the chip hole of the first substrate. The middle part of the front is the sensitivity area, the fourth pad is provided outside the periphery of the sensitivity area, and the fourth pad is provided with a fourth -guide electrical electricity.Blocks; encapsulation of circuit boards and rubber layers, between circuit boards and circuit boards, circuit boards and camera nude films are connected by conductive convex blocks. The packaging process is simple, the production cost is low, and the production efficiency is high.Compared with the traditional COB process overflowing process, it has the advantages of small volume, high performance, and short connection.The trend of the camera is thin and short, and the crystallization method has a good application in this regard.
Owner:江西芯创光电有限公司

Packaging device for compact single-phase integrated drive circuit and single-phase integrated drive circuit

The invention provides a packaging device of a compact single-phase integrated drive circuit. The packaging device comprises wire-leading frame, a plurality of first chip paddles formed on the wire-leading frame, first grid electrode drive devices, second grid electrode drive devices, first upper arm transistors, first lower arm transistors, second upper arm transistors, second lower arm transistors, signal pins, and power pins, wherein each first grid electrode drive device, each second grid electrode drive device, each first upper arm transistor, each first lower arm transistor, each second upper arm transistor, and each second lower arm transistor are arranged on each first chip paddle, and each signal pin and each power pin are led from each first chip paddle and arranged oppositely on tow sides of the wire-leading frame. The invention further provides the single-phase integrated drive circuit, aims at solving the problems that drive circuit devices formed by discrete components are difficult in installation and poor in reliability due to large amount, and is particularly suitable for solving the problems that center distances of the pins are reduced due to the fact that packaging size is limited in integrated drive circuits, and thereof the pins are damaged with one another due to the fact that the center distances are not enough.
Owner:HANGZHOU SILAN MICROELECTRONICS

Air cushion type headbox air flow control system adopting high-pressure fan to blow air

The invention relates to an air cushion type headbox air flow control system with a high-pressure fan for blowing air. The air cushion type headbox air flow control system solves the problems that in the prior art, a Roots blower is large in noise and maintenance amount, engine oil needs to be replaced and cleaned regularly, and environmental pollution is caused. The system comprises a control cabinet, a display, operation and control all-in-one machine is installed on a cabinet door of the control cabinet, a PLC is installed in the control cabinet, the display, operation and control all-in-one machine is connected with the PLC through an Ethernet port, a first liquid level pressure sensor and a second liquid level pressure sensor on a headbox are connected with the PLC, a high-pressure fan is connected with the PLC, and the high-pressure fan is connected with the PLC. A variable-frequency governor of the high-pressure fan is arranged in the control cabinet, the high-pressure fan is connected with the headbox, and the sizing pump motor and the frequency converter are connected with the PLC.
Owner:SHAANXI UNIV OF SCI & TECH
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