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44results about How to "Increase wire diameter" patented technology

Flooding-type varnished wire cable for high-power handheld transformer winding

The invention discloses a flooding-type varnished wire cable for a high-power handheld transformer winding. Two ends of a minuteness varnished wire harness cable are respectively stretched into two copper pipe center holes to achieve connection, and the sections of joints of two copper pipes and the minuteness varnished wire harness cable are in a semicircular shape in mould-pressing mode; a polytetrafluoroethylene sleeve is sleeved outside the two copper pipes and the minuteness varnished wire harness cable, and a cooling water channel used for passing of ion cooling water is formed between the minuteness varnished wire harness cable and the polytetrafluoroethylene sleeve; the wall of the first copper pipe of a section of gap between the left end of the minuteness varnished wire harness cable and the right end of a water inlet joint inside the first copper pipe center hole is provided with a water inlet; and the wall of the second copper pipe of a section of gap between the right end of the minuteness varnished wire harness cable and the left end of the water inlet joint inside the second copper pipe center hole is provided with a water outlet. The minuteness varnished wire harness cable is soaked in deion cooling water, and a large amount of work heat can be taken away.
Owner:JIANGSU UNIV OF SCI & TECH

Paint capable of shielding chromatic circle inductor and process for coating chromatic circle inductor

The invention provides paint capable of shielding a chromatic circle inductor and a process for coating the chromatic circle inductor. The paint capable of shielding the chromatic circle inductor is characterized by comprising the following materials in percentage by mass: 25-50% of chromatic circle inductor paint, 20-55% of soft magnetic ferrite magnetic powder, 10-30% of liquid curing agent and 10-30% of diluent; the manufacturing method for the paint capable of shielding the chromatic circle inductor and the process for coating the chromatic circle inductor comprise the steps of coating for two times by using the paint capable of shielding chromatic circle inductor, and then coating for two times by using the paint capable of shielding chromatic circle inductor. The paint capable of shielding the chromatic circle inductor and the process for coating the chromatic circle inductor have the advantages that interference on other parts caused by leakage flux generated in operating of the chromatic circle inductor can be effectively shielded; the cost of the coating can be greatly reduced; the inductance value can be increased; the self-resonance frequency is increased; and the paint is mainly suitable for packaging of the chromatic circle inductor.
Owner:深圳市同利科斯电子有限公司

Optical fiber production method with characteristic of optical fiber cable manufacturing quality benefiting

The present invention discloses an optical fiber production method with the characteristic of optical fiber cable manufacturing quality benefiting. The method sequentially comprises: 1) placing a preform into a heating furnace so as to soften the preform, and 2) under traction force, leading out the optical fiber from the top end of the preform to obtain the coiled optical fiber product, wherein the step 2) further comprises an optical fiber wire diameter control process and an optical fiber coiling tensioning force adjusting process, wherein the optical fiber wire diameter control process comprises that a diameter measuring instrument and a winch for providing optical fiber leading out traction force are arranged on the movement path of the optical fiber, a feedback circuit is connected between the diameter measuring instrument and the winch, and the feedback circuit transmits the output value of the diameter measuring instrument to the control circuit of a winch drive device, such that the leading out speed of the optical fiber is controlled through the output value of the diameter measuring instrument. With the method of the present invention, the dynamical adjusting on the optical fiber wire diameter during the optical fiber drawing process can be achieved, and the optical fiber cable manufacturing quality is easily achieved.
Owner:成都亨通光通信有限公司

Electromagnetic shielding structure and manufacturing method thereof

The embodiment of the invention provides an electromagnetic shielding structure and a manufacturing method of the electromagnetic shielding structure, and relates to the technical field of semiconductor packaging. The electromagnetic shielding structure comprises a substrate, a chip, a plastic package body and a shielding layer, wherein the chip is mounted on the substrate, and the plastic packagebody is arranged on one side, close to the chip, of the substrate; and a grounding circuit is arranged on the substrate. A grounding groove is formed in the substrate, a conducting layer is arrangedin the grounding groove, and the conducting layer is connected with a grounding circuit of the substrate; and the shielding layer covers the outer surface of the plastic package body and is connectedwith the conductive layer. The grounding groove is formed in the substrate and used for arranging the conducting layer so as to be connected with the shielding layer, and then the electromagnetic shielding function is achieved. Therefore, the short circuit between the conductive layer and the solder balls on the substrate can be avoided, the packaging efficiency is improved, the connection betweenthe conductive layer and the shielding layer is more reliable, and the electromagnetic shielding effect is better.
Owner:FOREHOPE ELECTRONICS NINGBO CO LTD

Ultra-long magnetic field moving-coil speaker

The invention discloses an ultra-long magnetic field moving-coil speaker comprising a frame, a magnetic circuit system and a vibrating system. The magnetic circuit system comprises an upper clamp plate, a lower clamp plate, a core and a magnet; a magnetic gap forms between the inside of a center hole of the upper clamp plate and the outside of the upper end of the core; the vibrating system comprises a voice coil, a damper and a paper cone; the lower end of the voice coil is inserted into the magnetic gap; the voice coil is 1-32ohm in impedance; the diameter of the frame is defined as R, and the thickness of the upper clamp plate is defined as H; the diameter R of the frame and the thickness H of the upper clamp plate meet the specific conditions. The ultra-long magnetic field moving-coil speaker has the advantages that the greater length of the magnetic cap ensures that the diameter of the voice coil needs to be increased on the premise of ensuring impedance uniformity, the length of a conductor of the voice coil in the magnetic field is increased as the diameter of the voice coil is increased, the longer a coil winding in the magnetic field, the higher the kinetic energy produced by the injected audio current of the magnetic circuit system, cutting magnetic lines of force, and the higher the efficiency; the length of the magnetic cap is increased, relative displacement ratio of the voice coil in the magnetic field is decreased, and distortion can be effectively decreased.
Owner:NINGBO SOUNDKING ELECTRONICS

Magnetic table of rotary screen printing machine

The invention discloses a magnetic table of a rotary screen printing machine. The magnetic table comprises a tank, a roller, a magnetic table top and a magnetic table base. A plurality of iron core holes are formed in the magnetic table top. An iron core is inserted in each iron core hole in the tank. Each iron core is sleeved with a frame, a coil is wound on each frame, a permanent magnet is arranged on the bottom face of the tank, the two ends of the tank are connected to a support through positioning screws, and the support is fixed to the bottom face. The tank is sleeved with the roller through bearings, the wall of the roller is located between the permanent magnet and a magnetic bar, and the outer wall of the roller makes contact with a printing guide belt. The permanent magnet is fixed to the bottom face of the magnet base with the position capable of being adjusted in the circumferential direction. The magnet base is sleeved with the roller through the bearings, so that on the premise that the permanent magnet and the magnetic bar attract each other, rolling friction is achieved through the roller and the printing guide belt, the friction coefficient between the roller and the printing guide belt is reduced, abrasion is reduced, production efficiency is improved, and energy consumption is reduced.
Owner:HUNAN JICHANG SILK

Preparation process of special aluminum electrolytic capacitor for electric vehicle controller

The invention discloses a preparation process of a special aluminum electrolytic capacitor for an electric vehicle controller, and aims to solve the technical problems that the service life of the electric vehicle controller is greatly restricted and the reliability of the electric vehicle controller is greatly reduced due to the fact that the magnitude of current borne by the aluminum electrolytic capacitor used by the existing electric vehicle controller is relatively common. The process roughly comprises the following steps of: nailing positive and negative aluminum foils to a leading-out wire, pasting a negative electrode pad foil at a negative electrode riveting position through a nailing machine, and winding a core package by intermediate pad electrolytic paper on an automatic winding machine; placing the core package in a high-temperature drying box to be dried, then taking out the core package and placing in electrolyte, and soaking the core package in the electrolyte in a vacuumizing and air pressurization mode; packaging the core package absorbed with the electrolyte by using an aluminum shell and a rubber sealing plug; and sleeving the packaged naked capacitor with an outer sheath sleeve with insulation and protection effects, and arranging the packaged naked capacitor in parallel according to positive and negative polarities for charging repair to obtain the aluminum electrolytic capacitor.
Owner:安远秦旭科技有限公司

Direct current electromagnet

The invention provides a direct current electromagnet which comprises a coil, an iron core arranged in the coil in a sleeved mode, a reset spring arranged at one end of the iron core in a sleeved mode and a limiting backseat. The coil, the iron core, the reset spring and the limiting backseat are arranged coaxially. The direct current electromagnet is characterized in that the direct current electromagnet further comprises a closed shell and a relay switch, the coil comprises a first coil body and a second coil body, normal close contacts of the relay switch are connected to the two ends of the second coil body, and the first coil body and the second coil body are connected through a heat protector. According to the direct current electromagnet, the two coil bodies are adopted so that the direct current electromagnet can work continuously for a long time and large operation tensile force can be provided; the two coil bodies are connected through the heat protector so that the direct current electromagnet can work safely in the high-temperature operation environment for a long time; the closed shell is adopted so that the strength and the waterproof performance of the direct current electromagnet can be guaranteed and the direct current electromagnet can work in the humid environment for a long time.
Owner:SHANGHAI KUKAI REFRIGERATION EQUIP

Variable-current variable-speed non-commutated permanent magnet direct current motor

The invention discloses a variable-current variable-speed non-commutated permanent magnet direct current motor, belongs to the field of direct current motors, and solves the problem that the existingdirect current motor consumes a lot of electric energy so as to overcome a magnetic pull of a permanent magnet stator to a rotor. The variable-current variable-speed non-commutated permanent magnet direct current motor comprises a pedestal, a coil inner rotor, a permanent magnet inner stator, a coil outer rotor and a permanent magnet outer stator, and further comprises a rotor shaft, rotor shaft supports, a rotor shaft magnetic levitation inner sleeve, a rotor shaft magnetic levitation outer sleeve, a support magnetic levitation inner sleeve and a support magnetic levitation outer sleeve, wherein the two ends of the rotor shaft are arranged inside support bearings of the two rotor shaft supports; the rotor shaft is tightly sleeved inside the inner cavity of the coil inner rotor; the rotorshaft magnetic levitation inner sleeve is sleeved inside external-diameter openings of the two ends of the coil inner rotor; the rotor shaft magnetic levitation outer sleeve is tightly sleeved insideinternal-diameter openings of the two ends of the permanent magnet inner stator. A high-power ultrahigh-speed permanent magnet direct current motor or generator can be manufactured as required; the variable-current variable-speed non-commutated permanent magnet direct current motor is applicable to the field, which needs power or power generation, of electric vehicles, industrial and mining enterprises and the like.
Owner:甘肃永动电子科技发展有限公司
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