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48 results about "Twin-lead" patented technology
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Twin-lead cable is a two-conductor flat cable used as a balanced transmission line to carry radio frequency (RF) signals. It is constructed of two stranded copper or copper-clad steel wires, held a precise distance apart by a plastic (usually polyethylene) ribbon. The uniform spacing of the wires is the key to the cable's function as a transmission line; any abrupt changes in spacing would reflect some of the signal back toward the source. The plastic also covers and insulates the wires.
Annular tube shaped electrode ion trap
InactiveCN101369510ASimple structureLarge ion storage capacityStability-of-path spectrometersTwin-leadPlanar electrode
The invention discloses an annular tubular electrode ion trap used for ion storing and analyzing device, correlating to technology of ion storage and ion mass analysis, especially relates to ion storage and an analysis instrument for analyzing and detecting based on mass-to-charge ratio characteristics of the ion. The annular tubular electrode ion trap has an ion lead-in hole and an ion lead-out hole, two or more annular tubular electrodes of different diameters are assembled together coaxially to compose a set of coaxial annular tubular electrodes, an annular space is formed between two adjacent rings, two plane electrodes are vertical to an axis and are respectively provided on two ends of the annular tubular electrode, boundary electrodes of the ion trap are composed of outer annular tubular electrodes and plane electrodes on two ends, an ion binding area is formed between the adjacent annular tubular electrodes, ions leaded in the area are to be captured, stored or discharged selectively.
Owner:FUDAN UNIV
Processing method of double-component elastic spandex core-spun yarn
The invention discloses a processing method of a double-component elastic spandex core-spun yarn, comprising raw materials, production steps and production process improvement thereof, wherein the raw materials include a first elastic spandex filament, a second elastic spandex filament and wrapping yarn; the second elastic spandex filament is half of the first elastic spandex filament in diameter, and the two elastic spandex filaments differ in traction multiple; and the wrapping yarn is a short fiber; the production steps include: rolling the comparatively thick wrapping yarn into the form of a flat strip; before entering into a spinning room, guiding both the elastic spandex filaments as double cores to the middle of the flat-strip shaped wrapping yarn; folding the flat-strip shaped wrapping yarn by taking the double cores as a fold line, and covering the double cores on the fold line in the flat-strip shaped wrapping yarn; feeding the double cores and the folded flat-strip-shaped wrapping yarn into the spinning room, and stretching and twisting in an 8-shaped form to form the double-component elastic spandex core-spun yarn. The product is elastic and free from the feeling of being too tight on the body, and overcomes the shortcoming of being insufficient in elasticity or too tight.
Owner:徐州时代纺织有限公司
Ion migration spectrum instrument
InactiveCN103367092AIncrease profitEasy to detectElectron/ion optical arrangementsMass spectrometersTwin-leadIon-mobility spectrometry
The invention discloses an ion migration spectrum instrument comprising an ion source electrode, a focus guiding electrode and an ion storage electrode, wherein the focus guiding electrode is arranged at one side of the ion source electrode, the ion storage electrode is arranged at one side of the focus guiding electrode, and the side of the focus guiding electrode is far away from the ion source electrode. The voltage of the focus guiding electrode and the ion storage electrode is controlled, and migration pipe work control is realized. At an ion storage phase, an ionized zone generates a lot of ions which are stored at an area between the focus guiding electrode and the ion storage electrode; at an ion lead-out phase, ions enter a migration zone in a very short time. An ion storage structure of the ion migration spectrum instrument is characterized in that stored ions can be led into the migration zone in a very short time; a net structure of the ion storage electrode guarantees that the stored ions do not overflow because excessive ions are stored; the structure can improve ion utilization rate of the migration pipe to 10% to 20%, and therefore detection sensitivity of the migration pipe is improved.
Owner:中国人民解放军63975部队
Squeeze-type asymmetrical double-core optical fiber switch
InactiveCN102207638AEasy to insertHighly integratedCladded optical fibreCoupling light guidesTwin-leadElectricity
The invention provides a squeeze-type asymmetrical double-core optical fiber switch, which comprises an asymmetrical double-core optical fiber, a stackable piezoelectric ceramic squeezing device and an adjustable voltage source. Two 3dB couplers are synthesized on the asymmetrical double-core optical fiber in a fused biconical taper manner, and the two couplers form a Mach-Zehnder interferometer; a ballast direction of a piezoelectric ceramic stack is perpendicular to the axial direction of the optical fiber, a fixed angle is formed between the piezoelectric ceramic stack and the position of double cores, and the piezoelectric ceramic stack is located between the two couplers. The squeeze-type asymmetrical double-core optical fiber switch is simple in structure and easy to manufacture; light paths are ensured to be relatively steady, and influence caused by environment factors, such as vibration, temperature and the like, can be effectively avoided; insertion loss is low, performance of whole optical fiber electro-optic modulation is improved, and modulation on an optical switch in a signal optical fiber can be implemented; and a modulation length necessary for the optical fiber is very short, and the shortest length can be only a few millimeters.
Owner:HARBIN ENG UNIV
Sodium bismuth titanate-based high-strain lead-free piezoelectric ceramic and preparation method thereof
InactiveCN102173788AImprove sintering performanceIncreased electrostrainPiezoelectric/electrostrictive/magnetostrictive devicesTwin-leadSodium bismuth titanate
The invention discloses sodium bismuth titanate-based high-strain lead-free piezoelectric ceramic and a preparation method thereof, aiming to solve the technical problem that the existing lead-based piezoelectric ceramic has low strain quantity. The technical scheme of the invention is as follows: dosing analytically pure BaCO3, Bi2O3, TiO2, Li2CO3 and Na2CO3 at a stoichiometric ratio of (Na1-xLix)0.5Bi0.5TiO3-BaTiO3, wherein 0<=x<=0.09; performing ball milling on the dosed materials in a ball mill tank, drying the ball milling mixture, briquetting, pre-calcining, taking out the calcined materials to break, performing ball milling again, and sieving; prepressing the sieved powder into sheets, and then performing isostatic pressing; and sintering the moulded sheets to obtain the sodium bismuth titanate-based high strain lead-free piezoelectric ceramic. As the binary system piezoelectric ceramic has good piezoelectric property, the strain quantity is increased from 0.15% in the background art to 0.21-0.27%.
Owner:NORTHWESTERN POLYTECHNICAL UNIV
Electric quantity synchronous processing-based intelligent electric energy meter dual core communication method
InactiveCN106324337ASimple peer-to-peer communicationEfficient peer-to-peer communicationElectrical measurementsEnergy efficient computingTwin-leadDual core
The invention discloses an electric quantity synchronous processing-based intelligent electric energy meter dual core communication method. A master SPI management core and a slave SPI metering core are connected via an SPI interface; a communication frame between the management core and the metering core consists of a frame start character, a control code, a data field length, a data field, a checking code and an ending character; the data field comprises data markers of electric energy meter data items that need to be read; the intelligent electric energy meter dual core communication method is advantageous in that an SPI communication protocol is built between the electric energy meter management core and the metering core, the communication frame is free from address redundancy, the electric energy meter data items that are needed are read according to the data markers, communication between the management core and the metering core is enabled to be simple and highly efficient, and electric quantity metering of the management core and the metering core can be synchronized.
Owner:NINGBO SANXING MEDICAL & ELECTRIC CO LTD
Apparatus and method for variable angle slant hole collimator
A variable angle slant hole (VASH) collimator for providing collimation of high energy photons such as gamma rays during radiological imaging of humans. The VASH collimator includes a stack of multiple collimator leaves and a means of quickly aligning each leaf to provide various projection angles. Rather than rotate the detector around the subject, the VASH collimator enables the detector to remain stationary while the projection angle of the collimator is varied for tomographic acquisition. High collimator efficiency is achieved by maintaining the leaves in accurate alignment through the various projection angles. Individual leaves include unique angled cuts to maintain a precise target collimation angle. Matching wedge blocks driven by two actuators with twin-lead screws accurately position each leaf in the stack resulting in the precise target collimation angle. A computer interface with the actuators enables precise control of the projection angle of the collimator.
Owner:JEFFERSON SCI ASSOCS LLC
Connections and feeds for broadband antennas
InactiveUS7109821B2Reduce lossTotal lengthMultiple-port networksLogperiodic antennasTwin-leadAudio power amplifier
Owner:RGT UNIV OF CALIFORNIA
Apparatus and method for variable angle slant hole collimator
ActiveUS20170040077A1High precisionEasy to adjustHandling using diaphragms/collimetersTwin-leadHigh energy
A variable angle slant hole (VASH) collimator for providing collimation of high energy photons such as gamma rays during radiological imaging of humans. The VASH collimator includes a stack of multiple collimator leaves and a means of quickly aligning each leaf to provide various projection angles. Rather than rotate the detector around the subject, the VASH collimator enables the detector to remain stationary while the projection angle of the collimator is varied for tomographic acquisition. High collimator efficiency is achieved by maintaining the leaves in accurate alignment through the various projection angles. Individual leaves include unique angled cuts to maintain a precise target collimation angle. Matching wedge blocks driven by two actuators with twin-lead screws accurately position each leaf in the stack resulting in the precise target collimation angle. A computer interface with the actuators enables precise control of the projection angle of the collimator.
Owner:JEFFERSON SCI ASSOCS LLC
Multi-core fiber demultiplexer and manufacturing method thereof
ActiveCN104880771AAchieve single-mode outputLow insertion lossCoupling light guidesTwin-leadDual core
The invention belongs to the technical field of fibers, and provides a multi-core fiber demultiplexer and a manufacturing method thereof. The multi-core fiber demultiplexer includes at least two multi-mode fibers formed by tapering fusion. The non-fused end of each multi-mode fiber is welded to a single-mode fiber through tapering. Single-mode outputs are achieved, the insertion loss is low, and the multi-core fiber demultiplexer is simple in manufacturing method, functions reliably and is low in cost. When the multi-core fiber demultiplexer is a dual-core fiber demultiplexer, the light energy of two parallel fiber cores in a dual-core fiber is output with low loss and also in an optical coupling manner, thus greatly widening applications of the dual-core fiber in the field of sensing and communication. Meanwhile, two large semicircular fiber cores approaching to each other in distance are arranged on the transverse plane of the dual-core fiber demultiplexer, so the dual-core fiber demultiplexer is suitable for both a coupling type dual-core fiber with a small core distance and a non-coupling type dual-core fiber with a big core distance.
Owner:SHENZHEN UNIV
Double-core butterfly optical cable production technology
InactiveCN104297874AEfficient productionReduce the probability of abnormalFibre mechanical structuresTwin-leadEngineering
The invention discloses a double-core butterfly optical cable production technology. A suspension wire reinforcing piece, a plurality of optical cable reinforcing pieces and two optical fibers are let out; the relative position of the suspension wire reinforcing piece, the optical cable reinforcing pieces and the two optical fibers is determined; the suspension wire reinforcing piece, the optical fibers, the optical cable reinforcing pieces and thermoplastic resin pass through a plastic extruding machine, and the plastic extruding machine shapes the thermoplastic resin into an optical cable protection cover and packages the suspension wire reinforcing piece, the optical fibers and the optical cable reinforcing pieces in the protection cover so that a double-core butterfly optical cable can be generated; the double-core butterfly optical cable is cooled; the double-core butterfly optical cable is pulled and straightened. The technology is used for producing the double-core butterfly optical cable, the two optical fibers of the optical cable are independent and do not affect each other, and the abnormal probability is greatly decreased.
Owner:NINGBO XINTONG INFORMATION TECH
Connections and feeds for broadband antennas
InactiveUS20050017907A1Reduce lossLow cross-couplingMultiple-port networksLogperiodic antennasTwin-leadAudio power amplifier
The present invention relates to connecting and impedance matching a balanced electrical signal, such as that received by an antenna, with an unbalanced transmission circuit, such as that delivered to an amplifier. A planar circuit board is described that delivers signals having opposite polarization collected by different antenna arms to a location for convenient connection to a twin-lead transmission line. Circuit topologies for the circuit board are described that provide relatively low loss and low cross-coupling. A tapered microstrip balun is also described that includes two conducting microstrips on opposing faces of a dielectric separator. Stepped or tapered microstrips at the balanced input port of the balun provide an impedance transforming section electrically connecting to a mode transducing section, in which one of the microstrips tapers outward to form a substantially wider strip. Appropriate choice of parameters is shown to lead to favorable performance in a compact balun.
Owner:RGT UNIV OF CALIFORNIA
Wiring device
The invention provides a wiring device which comprises a wiring fixing portion (10) and a wiring lead (20). The wiring fixing portion (10) comprises a first moving part (11) and a second moving part (12), and the first moving part (11) and the second moving part (12) form a clamping space used for clamping an object to be wired; the first end of the wiring lead (20) is detachably connected on the wiring fixing portion (10), and the second end of the wiring lead (20) is connected to a wiring connector of testing equipment. By the arrangement, connection of a testing circuit can be completed at one step conveniently and rapidly, and loop connection can be realized; the problem about the lack of a special wiring device for error test of contact-type high-voltage current transformer is solved.
Owner:STATE GRID CORP OF CHINA +1
Plasma display panel
InactiveUS7084569B2Stable characteristicsHighly reliable PDPAddress electrodesSustain/scan electrodesTwin-leadEngineering
A highly reliable plasma display panel is provided with less difference in wiring resistance, which can be driven at high speed even though the front or rear board has multilayer electrode wiring. A data electrode is covered with a dielectric layer, and a priming electrode is provided on the dielectric layer. An external wiring lead-out of the data electrode is provided on a rear substrate, and an external wiring lead-out of the priming electrode is provided on the dielectric layer. Wiring lead-out of the data electrode and wiring lead-out of the priming electrode have a step equivalent to the thickness of the dielectric layer.
Owner:PANASONIC CORP
Semiconductor device
ActiveCN101836289AImprove reliabilityMiniaturizationSemiconductor/solid-state device detailsSolid-state devicesTwin-leadHigh density
Provided is a higher density, thinner and lower cost semiconductor device by eliminating reliability failure due to concentration of internal stress in a final semiconductor device. The semiconductor device is provided with a semiconductor element; a supporting substrate, which is arranged on a surface opposite to a surface whereupon a pad of the semiconductor element is arranged, and has an area larger than that of the semiconductor element; an embedding insulating layer for embedding the semiconductor element on the supporting substrate; a fan-out wiring lead out from the pad to a region on the outer circumference side of the semiconductor element on the embedding insulating layer; and a wiring thickness reinforcing section, which is arranged in a prescribed region above the outer circumference section of the semiconductor element for reinforcing mechanical strength of the embedding insulating layer and the fan-out wiring.
Owner:GK BRIDGE 1
Fast wiring terminal
InactiveCN104600441AImprove wiring installation efficiencyEliminates wire strippingElectric connection structural associationsContact members penetrating/cutting insulation/cable strandsElectricityTwin-lead
The invention discloses a fast wiring terminal which is used for connecting branch wires to a 220V AC bus to provide power for electric appliances. The fast wiring terminal is formed by a casing of an insulation terminal, a groove of the insulation terminal, a pit in the bottom surface of the insulation terminal, branch wire wiring holes, fastening bolts of the bus and the branch wires, wiring nails of the bus and the branch wires, etc, wherein the bus is electrically connected with the wiring nails. During installation, the groove is clamped into a twin lead which is adopted as the AC bus, a lead fastening bolt is screwed tight to lead the twin lead is inserted into the pit, the bus wiring nails on the button surface puncture a lead insulation skin layer to form electric contact with metal core wires in the skin layer, and two parallel-connection branch wires to be connected are inserted into the branch wire wiring holes to be arranged on the wiring nails, two branch wire fastening bolts are screwed tight to lead the wiring nails to puncture insulation skin layers of the branch wires to form fixed and electric connection with metal core wires in the skin layers, and thus T-shaped parallel connection of a fire wire, a null wire and the branch wires of the AC bus is achieved. In addition, lead peeling is omitted and wiring installation is simple, fast and convenient.
Owner:吴为生
Non-contact double-core cable current measurement method and device
ActiveCN113820532AReduce measurement errorCurrent measurements onlyVoltage/current isolationCurrent transducerTwin-lead
The invention relates to a non-contact double-core cable current measurement method and device, computer equipment and a storage medium. The method comprises the steps of determining a position circular ring of four magnetoresistive sensor chips, obtaining the radius R of the position circular ring according to the position circular ring, measuring the distance x from any one of wires to the circle center of the position circular ring and the magnetic induction measurement values of the four magnetoresistive sensor chips, obtaining the final values B1, B2, B3 and B4 of the magnetic induction measurement values according to the magnetic induction measurement values, according to the radius R of the position circular ring, the distance x from any one of the measurement wires to the circle center of the position circular ring and the final values B1, B2, B3 and B4 of the magnetic induction measurement values, obtaining the rotation angle theta 1 of the double-core wire, and obtaining the current I of the double-core cable according to the rotation angle theta 1 of the double-core wire. By adopting the method, the current sensor based on the magnetoresistive sensor chip can measure the current of the twin-core cable at any twin-core wire rotation angle.
Owner:CHINA SOUTHERN POWER GRID DIGITAL GRID RES INST CO LTD
Bent sensing method based on twin-core optical fiber
The invention discloses a bent sensing method based on a twin-core optical fiber. Two optical fiber cores in the twin-core optical fiber are symmetrically distributed in the twin-core optical fiber, coherent superposition is produced in a space when two beams of light identical in frequency, stable in phase difference and having mutual parallel vibration components pass through double holes according to a double-hole interference theory, so that light energy is re-distributed in the space to form a series of light and shade interlaced interference fringes, and the double cores in the twin-coreoptical fiber rightly simulate the double-hole structure. When a single-frequency laser source passes through the twin-core optical fiber, the interference fringes are produced on a receiving screen.When the twin-core optical fiber is bent, optical path difference changes compared with the optical path difference when the fiber is not bent, and accordingly the positions of the highest points ofthe interference fringes displace to form displacement quantities. Therefore, displacement quantities are read from the receiving screen, and the radius of curvature can be derived reversely. The bentsensing method has the advantages of being simple in structure, convenient to measure, low in cost, high in sensing precision and the like.
Owner:ZHEJIANG NORMAL UNIVERSITY
Graphene core golf ball with an integrated circuit
ActiveUS10434375B1Increased durabilityHigh impact strengthGolf ballsDomestic articlesTwin-leadDual core
Owner:TOPGOLF CALLAWAY BRANDS CORP
Squeeze-type asymmetrical double-core optical fiber switch
InactiveCN102207638BShort modulation lengthImproving the performance of electro-optic modulationCladded optical fibreCoupling light guidesTwin-leadNon symmetric
Owner:HARBIN ENG UNIV
Wide bandwidth integrated 2x4 RF divider
An improved implementation of a 2×4 divider formed from a bridge junction is described. The bridge junction uses parallel and series connections of coaxial lines to eliminate impedance transformers that are normally required in a 2×4 power divider. In a preferred embodiment, the bridge junction is comprised of UT-085 coax transmission lines, 20 gauge twin lead wire and SB-805-61 ferrite beads with ½ turn windings to provide a wide bandwidth, compact, high power and rugged arrangement.
Owner:TOYON RES CORP
Method for limiting line short-circuit currents by using twin-core controllable phase shifter
InactiveCN103490395ALow technical requirementsReduce construction costsEmergency protective arrangements for limiting excess voltage/currentTwin-leadTransformer
The invention discloses a method for limiting line short-circuit currents by using a phase shifter. When the system is in normal operation, the number of turns of auxiliary side windings of a shunt transformer ET of the twin-core controllable phase shifter is adjusted by an electronic power switch so that the auxiliary side windings of the shunt transformer ET can be in different link group states. When symmetrical short trouble or asymmetrical short trouble occurs to a circuit or an adjacent circuit where the twin-core controllable phase shifter is placed, a relay protection device sends a separating brake instruction to a high-voltage circuit-breaker, meanwhile, the relay protection device sends a control instruction to the twin-core controllable phase shifter, the electronic power switch rapidly opens circuits for the auxiliary side windings of the shunt transformer ET and a series transformer BT of the twin-core controllable phase shifter, and before a movable contact and a fixed contact of the high-voltage circuit-breaker are separated, the circuits of the auxiliary side windings of the shunt transformer ET and the series transformer BT of the twin-core controllable phase shifter have already been opened. In an intrinsic separating brake time of the high-voltage circuit-breaker, when the high-voltage circuit-breaker starts arcing in an arc extinguishing chamber, the line short-circuit currents has already been limited in a quite low level, and therefore the reigniting or restriking probability of the high-voltage circuit-breaker is effectively lowered.
Owner:XI AN JIAOTONG UNIV +1
Manufacturing method of double-core composite sound equipment cable
ActiveCN113053575AHigh bonding strengthImprove bindingClimate change adaptationPower cables with screens/conductive layersTwin-leadElectrical conductor
The invention discloses a manufacturing method of a double-core composite sound equipment cable. The manufacturing method comprises the following steps: wrapping an insulating layer outside an electrified conductor; back-twisting and twisting the two sets of electrified conductors into a bundle to form an electrified conductor pair, wrapping the electrified conductor pair with a first middle sheath, and manufacturing a current transmission part; back twisting the two groups of optical fiber conductors to form an optical fiber conductor pair, and wrapping the bundled optical fiber conductor pair and the supporting piece with a second middle sheath to prepare an audio transmission part; and twisting the current transmission part and the audio transmission part into a bundle through back-twisting, and wrapping the bundle with an isolation layer and an outer sheath in sequence, so that the double-core composite sound equipment cable is manufactured. The independent current transmission part and the audio transmission part are arranged, electric signals and optical signals are transmitted at the same time, then the cable has the double functions of current transmission and audio transmission, excellent interlayer framework support is provided for the internal structure of the cable, and the mechanical property, the electrical property and the structural stability are improved.
Owner:LINOYA ELECTRONIC TECHNOLOGY CO LTD
Speical sensing cable alarming method and device for perimeter guard
InactiveCN1271576CHigh sensitivityImprove anti-interference abilityBurglar alarm by disturbance/breaking stretched cords/wiresTwin-leadTelecommunications
In order to provide alarming technique of sensing cable to replace high voltage protection electrical grid, following measures are utilized: signal of stress variation is collected by using double cords sensing cable 2 having shielding layer with impedance adaptive terminal being remote connected; signal processing is carried out by band pass amplification circuit 3 with reshaping and filtering functions and circuit 4 for recognizing mode of invasion. Alarming is through the coordinated control circuit for alarming signals, and protection circuit 6 for guarding against demolition is utilized. The method possesses advantages of high sensitivity, and interference immunity, as well as features of reasonable structure, easy of installation, and coordinated alarming for following actions of invader: climbing, treading, cutting, pulling, tearing down and striking.
Owner:邓剑平 +1
Speed adjusting method for dual-core cable surface treatment device suitable for smart grid
ActiveCN109494547AEfficient cuttingEffective pullLine/current collector detailsApparatus for removing/armouring cablesTwin-leadDual core
The invention relates to a speed adjusting method for a dual-core cable surface treatment device suitable for a smart grid. A double-core cable comprises an insulating sheath and two wire cores disposed in parallel in the insulating sheath. The double-core cable surface treatment device includes a device casing, a pulling device, a folding device, a cutting device, a crimping device, a speed adjusting device for adjusting a cutting rate of the cutting device. The speed adjusting method includes: rotating a third nut to drive a third screw to advance step by step along a speed adjusting vertical hole; the third screw pushes a contact ring to advance step by step along a rectangular plunger; the radius change of a position where the contact ring and an output disk contact each other resultsin a speed change of the contact ring in the event of a certain rotation speed of the output disk, and a rotation speed change of a longitudinal mandrel, the rotating shaft, and disk teeth. The methodcan adjust the rotation speed of the disk teeth, thereby adjusting the cutting effect on the double-core cable.
Owner:TONGXIANG BEITE TECH CO LTD
Clamp system for electrical connection among cell units
The invention provides a clamp system for electrical connection among cell units. The clamp system for electrical connection among cell units has a novel structure, and a cooling fluid can effectively and efficiently cool power cell packs of electric automobiles in a uniform and well-distributed mode. The system comprises a large clamp, a small clamp and an end clamp, wherein the large clamp is used for crossing a cooling deflecting plate and providing electrical connection between two dual cores, the small clamp is used for providing electrical connection between two battery cells inside a dual core, and the end clamp is connected to an anode of a first dual core and a cathode of a last dual core and is used for being connected to a cable of a main power supply.
Owner:冯国安
Radiation-resistant composite shielded nuclear power twin-core control cable
InactiveCN103545030AEasy to useShield electromagnetic interferenceInsulated cablesInsulated conductorsTwin-leadElectrical conductor
The invention relates to a radiation-resistant composite shielded nuclear power twin-core control cable which comprises a main conductor and an auxiliary conductor. A main composite insulating layer is coated on the outside of the main conductor, an auxiliary composite insulating layer is coated on the outside of the auxiliary conductor, an isolation layer is arranged on the outsides of the main composite insulating layer and the auxiliary insulating layer, a composite shielding layer is coated on the outside of the isolation layer, a sheath layer is coated on the outside of the composite shielding layer, and a protective layer is coated on the sheath layer. The radiation-resistant composite shielded nuclear power twin-core control cable has the advantages that the radiation-resistant composite shielded nuclear power twin-core control cable is provided with the composite shielding layer, so that high external electromagnetic interference can be effectively shielded and cannot affect the cable, normal usage of the cable can be guaranteed, and the stability of equipment can be improved.
Owner:常州市金坛沃德丰电子科技有限公司
High-frequency short-wave high-suppression communication circuit
ActiveCN113691277ARealize sendingRealize functionTransmissionHigh level techniquesTwin-leadTelecommunications
The invention provides a high-frequency short-wave high-suppression communication circuit, which comprises a signal input port, a power amplification circuit, a low-pass filter circuit, a transceiving switch circuit, a fixed coupling circuit, an antenna, a signal receiving port and a control port, which are connected in sequence; the power amplification circuit comprises a first-stage power amplification circuit, a second-stage power amplification circuit, a third-stage power amplification circuit and a grid voltage switch driving circuit; the fixed coupling circuit comprises a double-core wire fixed coupling module and a leveling correction module; the double-core wire fixed coupling module comprises a double-core cable WT6 and a double-core cable WT7; the leveling correction module comprises an LC series unit and an LC parallel unit; and the auxiliary cable input ends of the double-core cable WT6 and the double-core cable WT7 are respectively grounded through the LC series unit and the LC parallel unit. The communication circuit can realize the transmitting and receiving functions of high-frequency short-wave signals, output harmonic waves are reduced by optimizing the coupling flatness, the technical effect of high suppression is achieved, and the operation stability and reliability are improved.
Owner:GUANGDONG KUANPU TECH CO LTD
Double-core multi-steel-tube all-steel buckling-restrained brace with double yield points
PendingCN109306810AGood shock resistance and energy dissipationStay flexibleProtective buildings/sheltersShock proofingTwin-leadBuckling-restrained brace
Owner:山东省工程地震研究中心
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