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32results about How to "Will not cause burnout" patented technology

Three-working-position electric operation mechanism for switching device

The invention discloses a three-working-position electric operation mechanism for a switching device, and a driving device, a manual interlocking device and an electrical control device are arranged in a case of the mechanism, wherein the driving device adopts a single motor, a gear pair, a worm and worm gear pair, a two-way controllable overrunning clutch and an output shaft and is connected with a three-position isolation/grounding switch through a shaft coupling so as to realize the operations of closing, opening and grounding; a frame is provided with position-limiting clutch pin shafts in the closing position and the grounding position respectively, and a pair of detents, a half shaft and a tripping electromagnet are arranged in the opening position of the frame, thereby realizing the positioning for closing, opening and grounding and the mechanical clutch protection; a chain wheel transmission/bevel gear pair is used for realizing the state indication of the three positions on the front surface and the side surfaces and the position switching of a three-working-position auxiliary switch; and the manual interlocking device can realize manual-electrical interlocking and electromagnetic interlocking among switching elements. The three-working-position electric operation mechanism is simple in structure, stable in output angle, accurate in positions and unrelated to the inertia of a system, the mechanical-electrical interlocking is realized between isolation and grounding, the production and the use are safe, the reliability is very high, the cost is low, and the operations of closing a break and opening the break can be performed rapidly.
Owner:NINGBO XINGBANG ELECTRIC

Cellular automatic electrical control cabinet with flame-retardant and fire-extinguishing functions

The invention belongs to the technical field of electrical control cabinets, and discloses a cellular automatic electrical control cabinet with flame-retardant and fire-extinguishing functions. The control cabinet comprises an outer cabinet, a fire-extinguishing pipeline, a temperature sensor, a smoke sensor, a fire-extinguishing assembly and a processing device, wherein the fire-extinguishing pipeline, the temperature sensor, the smoke sensor are arranged in the outer cabinet, and the fire-extinguishing assembly and the processing device are arranged outside the outer cabinet. At least one fire extinguishing pipeline and at least one fire extinguishing assembly are arranged; the fire extinguishing assembly comprises a fire extinguisher and a driving base, and the fire extinguisher is mounted on the driving base; the processing device comprises a PLC processor and is electrically connected with the driving base; real-time monitoring is performed by the temperature sensor and the smokesensor to determine whether a fire occurs in the control cabinet, and if yes, a fire extinguishing device is cooperated to realize timely fire extinguishing so as to effectively reduce losses of the control cabinet in case of fire; and the fire extinguishing device is composed of the fire extinguishing pipeline, the common fire extinguisher and the driving base, production cost is low, the fire extinguisher and the driving base can be detached and replaced, and use cost is low.
Owner:广东盛银新能源科技有限公司

Marine outboard motor

The invention provides a marine outboard motor which comprises a casing, a bracket, a motor body, a spindle, a control handle assembly, an output device, a controller and a water pump. The motor body and the controller are fixedly connected in the casing, the output device is connected and assembled with the casing, the motor body is in drive connection with the output device through the spindle, and the control handle assembly is connected and assembled with the casing. The control handle assembly comprises a rotary handle, a connecting handle, a connecting rod and a potentiometer; one end of the connecting handle is fixedly connected with the casing, one end of the rotary handle sleeves the other end of the connecting handle, one end of the connecting rod is fixedly connected with the rotary handle, and the potentiometer is connected and assembled with the connecting handle and electrically connected with the controller. The motor body is provided with a cooling passage, the controller is also provided with a cooling passage, and the cooling passage of the motor body, the cooling passage of the controller, the water pump and a connecting pipeline form a cooling system. The marine outboard motor is simple in structure, good in reliability and convenient to assemble and mount. The motor body and the controller are prevented from being burnt out even when a ship runs astern for a long time.
Owner:CHANGZHOU GOLDEN MOTOR TECH

PFC circuit and electronic equipment comprising same

The invention discloses a PFC circuit and electronic equipment comprising the same. The IGBT module of the PFC circuit comprises a plurality of identical and parallel IGBTs, wherein the emitter of each IGBT is grounded, the collector of each IGBT is connected between an inductive module and a switching diode module, and the grid of each IGBT is connected with a driving control module; the driving control module controls the simultaneous conduction and the simultaneous cut-off of the IGBTs. The electronic equipment and the PFC circuit control the simultaneous conduction of the IGBTs; when the current generated by the inductive module is overlarge, the IGBTs are used for shunting; even if the IGBTs with small current are selected, the IGBTs cannot be burnt; thus, the safe and stable working of the circuit is ensured, the IGBTs with large current and large power are not needed, and the electricity consumption of the IGBTs and the circuit cost are reduced.
Owner:TCL AIR CONDITIONER ZHONGSHAN CO LTD

Identity verification method, identity verification management system and identity verification management equipment

The invention provides an identity verification method, an identity verification management system and identity verification management equipment. The identity verification method comprises three verification methods such as information base-face matching, identity card-face matching and fingerprint verification, wherein the three verification methods can be used independently or in any combination. The information base-face matching refers that a face image in the video is automatically captured, and 1:N face matching is realized with face image base information, wherein N is less than or equal to 10000; the identity card-face matching refers that 2nd-generation identity card information is read through equipment, corresponding face information is automatically collected at the same time,and 1:1 matching is automatically completed with the automatically captured face image in the video; and the fingerprint verification refers that fingerprint information in the 2nd-generation identity card information is read through equipment, and the read fingerprint information is matched with fingerprint information collected through terminal equipment. The identity verification method integrates various identity verification modes, and can select a corresponding verification mode according to different conditions. In addition, the identity verification method can select multiple verification modes. Meanwhile, the equipment is convenient to carry.
Owner:河北融柏信息技术服务有限公司

Display panel and signal transmission method thereof

The invention discloses a display panel and a signal transmission method thereof. The display panel provided by the invention comprises a substrate and at least a first driving chip and a second driving chip. The first and second driving chips are directly arranged on one side of the substrate; the first driving chip is at least provided with a first power supply receiving solder pad, first and second auxiliary solder pads and a first auxiliary wire; and the second driving chip is at least provided with a second power supply receiving solder pad. The first power supply receiving solder pad andthe first auxiliary solder pad are used for receiving system voltages respectively and the first auxiliary solder pad is also connected with the second auxiliary solder pad through the first auxiliary wire to transmit the system voltage to the second power supply receiving solder pad from the second auxiliary solder pad.
Owner:HANNSTAR DISPLAY CORPORATION

Wide-duty-ratio MOSFET isolation drive circuit

InactiveCN105305788AWide Duty Cycle RangeImplementation drivePower conversion systemsMOSFETBurning out
To solve the problems of the prior art, the invention provides a wide-duty-ratio MOSFET isolation drive circuit. A rising edge and a falling edge of a PWM signal are captured and then an edge pulse signal is formed, the edge pulse signal is input to a primary side of a transformer, an output pulse is shaped at a secondary side of the transformer and finally recovered to be a PWM drive waveform with positive and negative voltage output, and then an MOSFET can be driven. Signals and energy are instantly transmitted at the edge of PWM, so the MOSFET isolation drive circuit is wide in isolation output wide duty ratio, which can reach 0-99.5%. A primary side pulse generation mode is different from a conventional capacitor-transformer combination driving mode, so a self-excitation frequency problem does not exist. If an input duty ratio abruptly changes, the output can follow with the change. No low-level gain phenomenon will occur, and a switch tube will not be connected for short time and burn out.
Owner:SHENZHEN AEROSPACE NEW POWER TECH

Method for increasing testing safety of high-power semiconductor amplifier

The invention relates to a method for increasing the testing safety of a high-power semiconductor amplifier. During noise power density testing, the method includes the steps of firstly, inputting safety input power PIN-safe from the input port of the high-power semiconductor amplifier; secondly, determining the output power POUT of the high-power semiconductor amplifier, and if the POUT is largerthan an upper limit, determining that an appropriate band-stop filter is not connected to the output port of the high-power semiconductor amplifier or no band-stop filter is connected to the output port of the high-power semiconductor amplifier. By the method, performance index testing during the testing of the high-power semiconductor amplifier, and the burning of precious testing instruments such as a vector network analyzer and a spectrometer.
Owner:CHINA ELECTRONIS TECH INSTR CO LTD

Time sequence protection circuit for controlling depletion type power device

The invention discloses a time sequence protection circuit for controlling a depletion type power device. The time sequence protection circuit comprises a DAC, a first inverse phase proportional operational circuit, a second inverse phase proportional operational circuit, a voltage comparator, an enable signal output module and a PMOS tube control circuit, wherein the DAC comprises a first voltageoutput end and a second voltage output end; the first end of the first inverse phase proportional operational circuit is connected to the first voltage output end, and the second end of the first inverse phase proportional operational circuit serves as a grid voltage output end; the second inverse phase proportional operational circuit is connected between the second end of the first inverse phase proportional operational circuit and the negative input voltage end of the voltage comparator; the positive input voltage end of the voltage comparator is connected to the second voltage output end;and the enable signal output module is used for outputting an enable signal to the PMOS tube control circuit when the voltage comparator outputs the low level. The technical problem that the depletion type power device is burnt due to the fact that the inverse phase proportional operational circuit is damaged or the grid voltage is not appropriate in the prior art is solved.
Owner:TIME VARYING TRANSMISSION CO LTD

Portable drainage type motor

The present invention relates to the field of electric motors, specifically a convenient drainage type electric motor, which includes a stator and a rotor, and also includes a casing, a blocking device, a water level sensor, a controller, and an alarm. The casing includes a side plate and a bottom plate, The bottom plate is provided with drainage holes, and the blocking device includes a rubber plug, a top plate and a cylinder; the top plate includes a horizontal plate and vertical plates symmetrically arranged on both sides of the lower end surface of the horizontal plate; one end of the cylinder is fixed On the lower end face of the transverse plate, the other end of the cylinder is fixed on the upper end face of the rubber plug. Compared with the prior art, the structure of the motor is ingeniously designed, which can facilitate the discharge of condensed water without causing the motor to burn out, and has a long service life. At the same time, the invention can realize automatic drainage without manually extracting the rubber plug, which saves manpower.
Owner:张新

boat propeller

Provided is a propeller hanging machine for a ship, comprising a housing, a bracket, a motor, a main shaft, a control handle assembly, an output device and a controller, wherein the motor and the controller are fixedly connected in the housing; the output device is connected to the housing; the motor is connected to the output device by the main shaft in a transmission mode; and the control handle assembly is connected to the housing. The control handle assembly comprises a rotation handle, a connection handle, a connection rod and a potentiometer, wherein one end of the connection handle is fixedly connected to the housing; one end of the rotation handle is sleeved on the periphery of the other end of the connection handle; one end of the connection rod is fixedly connected to the rotation handle; and the potentiometer is connected to the connection handle and is electrically connected to the controller. The propeller hanging machine further comprises a water pump, wherein the motor is provided with a cooling channel, the controller is provided with a cooling channel, and a cooling system is formed by the cooling channel on the motor, the cooling channel on the controller, the water pump and a connection pipeline. The present invention has the advantages of simple structure, high reliability and simple and convenient installation and maintenance, and will not cause the motor and controller to be burnt out even if a ship is backed up for a long time.
Owner:CHANGZHOU GOLDEN MOTOR TECH

A Timing Protection Circuit for Controlling Depletion Mode Power Devices

The invention discloses a timing protection circuit for controlling depletion-type power devices, comprising: DAC, a first inverse proportional operation circuit, a second inverse proportional operation circuit, a voltage comparator, an enable signal output module and a PMOS tube control circuit; the DAC includes a first voltage output terminal and a second voltage output terminal; the first terminal of the first inverse proportional operation circuit is connected to the first voltage output terminal, and the second terminal of the first inverse proportional operation circuit is used as the gate voltage output terminal; the second terminal of the first inverse proportional operation circuit is connected to the negative input voltage terminal of the voltage comparator with a second inverse proportional operation circuit; the positive input voltage terminal of the voltage comparator is connected to the second voltage output terminal; The enable signal output module is used to output the enable signal to the PMOS transistor control circuit when the voltage comparator outputs a low level. It solves the technical problem in the prior art that the damage of the inverse proportional operation circuit or the improper gate voltage will cause the burnout of the depletion power device.
Owner:TIME VARYING TRANSMISSION CO LTD

Radio frequency system, wireless communication equipment and protection method of power amplifier

The invention provides a radio frequency system, wireless communication equipment and a protection method of a power amplifier. The radio frequency system comprises a radio frequency path used for transmitting a radio frequency signal in a first frequency band; the power amplifier is positioned on the radio frequency path and is used for performing power amplification processing on the radio frequency signal; and the control module is used for controlling the input power of the power amplifier, so that the input power of the power amplifier is smaller than the maximum allowable input power of the power amplifier. In the embodiment of the invention, the input power of the power amplifier is controlled to be lower than the maximum allowable input power of the power amplifier, the PA is protected from being burnt, and the reliability of the PA is improved to a certain extent.
Owner:GUANGDONG OPPO MOBILE TELECOMM CORP LTD

SD card protection system, method and protection circuit for multiple card slots in one connector

The invention discloses an SD card protection system, terminal equipment, an SD card protection method, a protection circuit for a connector with multiple card slots in one, and a connector with multiple card slots in one. The SD card protection system includes a multi-slot connector, a switch unit, a charge discharge unit, a detection unit, and a controller; the switch unit is connected in series to the power supply line of the SD card power pin of the connector; the charge discharge unit It is connected with the SD card power supply pin of the connector; the detection unit is used to detect the insertion and removal status of the card tray. The controller receives and obtains the insertion and removal status of the card tray according to the output information of the detection unit. When the card tray is inserted, the charge discharge unit is turned off, and the switch unit is turned on. When the card tray is pulled out, the control switch unit is turned off and turned on. The charge discharge unit discharges the charge on the SD card power pin of the connector, and through the scheduling of the controller, it is guaranteed from the system level that no matter whether the card tray is plugged or unplugged, the motherboard and the card will not be burned.
Owner:重庆蓝岸科技股份有限公司

A kind of tank calciner volatile matter channel

The invention relates to a volatile matter channel for a pot type calcining furnace. The volatile matter channel for the pot type calcining furnace comprises a material pot, a material pot upper portion volatile matter concentrated channel, a front wall and a rear wall; a front wall volatile matter vertical channel is formed inside the front wall; a fire channel smoke concentrated channel is arranged on the lower portion of the front wall; the front wall volatile matter vertical channel is directly communicated with the fire channel smoke concentrated channel from the material pot upper portion volatile matter concentrated channel; a first layer fire channel volatile matter concentrated channel, a third layer fire channel volatile matter concentrated channel and a fifth layer fire channel volatile matter concentrated channel are communicated with the front wall volatile matter vertical channel; a rear wall volatile matter vertical channel is formed inside the rear wall; a second layer fire channel volatile matter concentrated channel, a fourth layer fire channel volatile matter concentrated channel and a sixth layer fire channel volatile matter concentrated channel are communicated with the rear wall volatile matter vertical channel. The volatile matter channel for the pot type calcining furnace has the advantages of enabling redundant volatile matters in high volatile matter raw materials to be directly discharged to the fire channel smoke concentrated channel through the front wall volatile matter vertical channel, enabling energy of the redundant volatile matters after burning to be utilized by following devices and not needing return matching technology.
Owner:SHENYANG ALUMINIUM MAGNESIUM INSTITUTE

A sub-format automatic electrical control cabinet with flame retardant and fire-extinguishing function

The invention belongs to the technical field of electrical control cabinets, and discloses a compartmentalized automatic electrical control cabinet with flame-retardant and fire-extinguishing functions, including an outer cabinet, a fire-extinguishing pipe installed inside the outer cabinet, a temperature sensor, a smoke sensor, and an outer cabinet. The fire extinguishing assembly and processing device outside the cabinet; the fire extinguishing pipeline and the fire extinguishing assembly are provided with at least one; the fire extinguishing assembly includes a fire extinguisher and a drive base, and the fire extinguisher is installed on the drive base; the processing device includes PLC processing and electrically connected to the drive base; real-time monitoring based on the temperature sensor and smoke sensor to determine whether there is a fire in the control cabinet, and if so, cooperate with the fire extinguishing device to realize timely fire extinguishing, so as to effectively reduce the loss when the control cabinet fires and the fire extinguishing device is based on a fire extinguishing pipeline, a common fire extinguisher and a driving base, and the production cost is low, and both the fire extinguisher and the driving base can be disassembled and replaced, and the use cost is low.
Owner:广东盛银新能源科技有限公司
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