Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Hiro

30 results about "Early effect" patented technology

The Early effect, named after its discoverer James M. Early, is the variation in the effective width of the base in a bipolar junction transistor (BJT) due to a variation in the applied base-to-collector voltage. A greater reverse bias across the collector–base junction, for example, increases the collector–base depletion width, thereby decreasing the width of the charge carrier portion of the base.

Early effect cancelling circuit, differential amplifier, linear regulator, and early effect canceling method

In an input transistor of current mirror circuit, it is intended to prevent the current generated by Early effects from appearing in the output current of the current mirror circuit. Having an Early voltage detector 22 of same connection and structure as a driver circuit 21 , and connected in parallel to the driver circuit 21 , the current flowing in input transistor Q 9 of the Early voltage detector 22 is detected. Output current (current IQ 11 ) of Early voltage detector 22 is added to input current (current IQ 5 ) of driver circuit 21 . As a result, in input current (current IQ 7 ) of current mirror circuit 25 , current alpha due to Early voltage effects can be canceled. At the same time, current alpha due to Early voltage effects generated in input transistor Q 5 of current mirror circuit 25 is prevented from appearing in output current (current IQ 8 ) of current mirror circuit 25.
Owner:CYPRESS SEMICON CORP

A bipolar device with a high Erli voltage and a manufacturing method thereof are disclosed

The invention discloses a bipolar device with high Erli voltage and a manufacturing method thereof. The bipolar device comprises three metal wires and a substrate. An N buried layer, a first epitaxiallayer, a second epitaxial layer and a SiO2 layer are sequentially arranged above the substrate; After the three metal wires pass through the lead-out holes arranged on the SiO2 layer, the lead-out region, the emitting region and the P-type base region of the current collector region are connected respectively. The lead-out region and P-type base region of the collector region are located in the second epitaxial layer, and the emitter region is located in the P-type base region. P-type isolation regions are arranged on both sides of the bipolar device. A main improvement of that method is thata first epitaxial process is carried out on the substrate to form a first epitaxial lay; Performing a second epitaxial process on the first epitaxial layer to form a second epitaxial layer; Through the design of double epitaxial layers, the Erli voltage can be increased effectively, the Erli effect can be reduced, and the precision of integrated circuit can be improved. At the same time, the threshold voltage of the parasitic PMOS transistor is increased, the metal wiring of the circuit is more convenient, and the working voltage range is enlarged.
Owner:XIAN MICROELECTRONICS TECH INST

Intelligent automatic water purifying system based on PLC (programmable logic controller)

The invention discloses an intelligent automatic water purification system based on a PLC controller, which solves the problems of the filter in the prior art, which needs to be stopped for maintenance after failure, the pipeline water pressure is too high to shorten the service life of the pipeline, the purified water is prone to backflow, and automation low level problem. The present invention comprises a water delivery pipe for purified water, a first primary effect filter, a first fine filter, a reverse osmosis tank, an activated carbon filter, a centrifugal pump, a second primary effect filter, a second fine filter, a waste water collection tank, and a water supply pipe , the first booster tube, the first booster pump, the second booster tube, the second booster pump, a check solenoid valve, a pressure sensor and a PLC controller. The invention can carry out fault maintenance online, can effectively reduce the pressure in the pipeline connecting the fine filter and the reverse osmosis tank, prolongs the service life of the pipeline, saves the use cost, can effectively prevent the backflow of purified water, and can effectively improve the performance of the reverse osmosis tank Excellent reverse osmosis effect to improve purification efficiency and high degree of automation.
Owner:成都袖禾贸易有限公司

Modular electrostatic purifying equipment

The invention discloses a modular electrostatic purification device, which comprises an air inlet box, a filter and an air outlet box. The air inlet box and the air outlet box are respectively installed on both sides of the filter. The filter part includes, an electric control part, a chassis, The primary effect filter, the micro-static ionization module and the micro-static dust collection module, the electric control part is arranged at one end of the chassis, and the primary effect filter, the micro-static ionization module and the micro-static dust collection module are sequentially arranged in the air inlet box inside the chassis Between the airflow channel and the air outlet box, the electric control part is electrically connected to the micro-static ionization module and the micro-static dust collection module through wires; the invention can make the air purification equipment generate less ozone and simultaneously collect impurities , Equipment maintenance and cleaning frequency is low.
Owner:东莞旺科知识产权运营有限公司

Cleaning device for PDC drill bits

The invention relates to a cleaning device for a PDC drill bit, comprising a base, a rotating shaft, and a disc. The base is provided with casters with brakes. One end of the rotating shaft is connected to the middle of the upper surface of the base, and the other end is fixed to the middle of the disc. connection; the upper surface of the disc is provided with the first cleaning box, the second cleaning box and the third cleaning box with openings on the upper surface, and the bottom surface of each cleaning box is provided with a drain hole, and a filter screen is provided at the drain hole, and the filter screen It includes coarse filter layer, primary effect layer, medium effect layer, high efficiency layer and purification layer which are arranged sequentially from water inlet to water outlet; water inlet holes are also arranged on the side of each cleaning tank, and drain pipes are connected to the drain holes. The water collecting tank is connected, the water inlet is connected with a water inlet pipe, the water inlet pipe is connected with the water supply tank, and each water inlet pipe is also connected with a water inlet pump in series. The advantages of the present invention are that: the present invention can effectively supply water during the cleaning process, ensure continuous cleaning, further improve cleaning efficiency and enable water resources to be recycled.
Owner:QIDONG TIANSHAN TOOLS CO LTD

Ventilating dustproof bookshelf

InactiveCN107713405ASave spaceSolve the problem that it is easy to fall and fall when it cannot be filledBook cabinetsBook-troughsEarly effectElectrical and Electronics engineering
The invention discloses a ventilation and dust-proof bookshelf, which comprises a bookshelf body and a door body. The interior of the bookshelf body is a cavity structure, a transverse partition is arranged in the cavity inside the bookshelf body, and a transverse sliding plate is arranged in the middle of the upper surface of the partition. The slide rail is provided with a slider that can slide along the slide rail, a baffle is arranged in the middle of the top surface of the slider, and a locking screw is arranged on the top surface of the slider on the non-working side of the baffle. The door body includes a left The door body and the right door body, the left door body and the right door body both include an inner door panel, an outer door panel and a filter screen arranged between the inner door panel and the outer door panel, the upper part of the inner door panel is provided with an air outlet, and the upper part of the outer door panel is provided with an air intake The filter screen includes a primary filter on one side of the outer door panel, a high-efficiency filter on one side of the inner door, and a medium-efficiency filter between the primary filter and the high-efficiency filter; the ventilation and dust-proof bookshelf can effectively To prevent the bookshelves from being damaged, the problem that the books that cannot be scattered on the partition cannot be scattered when the books cannot be filled.
Owner:何美英

Drill bit cleaning system

The invention relates to a drill bit cleaning system, which includes a base, a rotating shaft and a disk. The rotating shaft includes a fixed shaft and a telescopic shaft. The support pin is inserted in the pin shaft hole and the positioning hole; the lower end of the fixed shaft is connected with the middle part of the upper surface of the base, and the upper end of the telescopic shaft is located in the circular groove; the upper surface of the disc is provided with three cleaning boxes with upper surface openings, and each There are drain holes on the bottom of the cleaning tank, and a filter screen is set at the drain hole. The filter screen includes a coarse filter layer, an initial effect layer, a medium effect layer, a high efficiency layer and a purification layer arranged in sequence from the water inlet to the water outlet; each cleaning box The side of the side is also provided with a water inlet hole, the drain hole is connected with the water collection tank through the drain pipe, and the water inlet hole is connected with the water supply tank through the water inlet pipe. The advantages of the present invention are that: the present invention is applicable to cleaning of drill bits of different heights and can effectively supply water during the cleaning process to ensure continuous cleaning and further improve cleaning efficiency.
Owner:QIDONG TIANSHAN TOOLS CO LTD

A pig house environmental control system

ActiveCN104719171BSimple structural designStable ventilation and heating effectAnimal housingEarly effectControl system
The invention belongs to the technical field of livestock and poultry breeding, and in particular relates to a pig house environment control system, which includes a pig house, an air supply pipe arranged in the pig house, a dung ditch arranged underground in the pig house, a waste gas collection pipe connected to the dung ditch, The main body of the heating and ventilation house connected to the pig house through the air supply pipe and the exhaust gas collection pipe. The main body of the heating and ventilation house includes a front wall panel, a rear wall panel, a left wall panel, and a right wall panel. There is a primary filter on the top, a medium filter on the right of the primary filter, a bellows heat exchange system on the right side of the medium filter, a temperature adjustment system on the right side of the bellows heat exchange system, and a bellows heat exchange system. The exchange system is connected with the waste gas collection pipe, and the partition in front of the bellows heat exchange system is provided with a wind-out wet curtain. This invention effectively reduces the concentration of harmful gases in the pig house, and at the same time enhances the efficiency of heating and ventilation in the pig house in winter and cooling and ventilation in summer. The effect is to improve the environmental quality of the pig house.
Owner:HENAN UNIV OF ANIMAL HUSBANDRY & ECONOMY

A high early voltage bipolar device and its manufacturing method

The invention discloses a high Early voltage bipolar device and a manufacturing method thereof. The bipolar device includes three metal wirings and a substrate; an N buried layer, a first epitaxial layer, a second epitaxial layer and SiO 2 layer; 3 metal wires pass through the SiO 2 After the lead-out hole set on the layer, respectively connect the lead-out region of the collector region, the emitter region and the P-type base region; the lead-out region of the collector region and the P-type base region are located inside the second epitaxial layer, and the emitter region is located in the P-type base region Inside; P-type isolation regions are set on both sides of the bipolar device. The main improvement of the method is that it includes performing the first epitaxial process on the substrate to form the first epitaxial layer; performing the second epitaxial process on the first epitaxial layer to form the second epitaxial layer; through the design of the double epitaxial layer, it can Effectively increase the Early voltage, reduce the Early effect, and improve the precision of the integrated circuit; at the same time, the threshold voltage of the parasitic PMOS tube is increased, the metal wiring of the circuit is more convenient, and the working voltage range is expanded.
Owner:XIAN MICROELECTRONICS TECH INST

Novel PCD drill bit cleaning device

The invention relates to a novel PCD drill bit cleaning device, which comprises a base, a rotating shaft, and a disc, and the rotating shaft is fixedly connected to the base and the disc respectively; the upper surface of the disc is provided with three cleaning boxes with openings on the upper surface, and each cleaning box The bottom surface and the side are provided with drain holes and water inlet holes, and the drain holes are connected with drain pipes, and the drain holes are provided with filter screens, which include a coarse filter layer, an initial effect layer, and a medium filter layer arranged in sequence from the water inlet to the water outlet. effect layer, high-efficiency layer and purification layer; a support frame is symmetrically hinged on both sides of the upper end and the lower end of the rotating shaft, the other end of the upper end support frame is fixedly connected with the bottom surface of the disc through a lock pin, and the other end of the lower end support frame is fixed through a lock pin. The pin is fixedly connected with the upper surface of the base. The advantages of the present invention are: the present invention can reduce the occupied space, facilitate transportation and increase the stability between the disk and the rotating shaft and between the base and the rotating shaft, and can effectively supply water during the cleaning process to ensure continuous cleaning. Thereby improving cleaning efficiency.
Owner:QIDONG TIANSHAN TOOLS CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products