10results about How to "Stable electrical characteristics" patented technology

The invention belongs to the technical field of hardware machining, and particularly relates to a production process of a hardware elastic sheet with stable contact performance. The production technology of the hardware elastic piece with the stable contact performance comprises the following steps that S1, raw materials are subjected to casting forming, and an initial sample is obtained; and S2, sequentially carrying out heat treatment and surface treatment on the initial sample, carrying out precision detection, and obtaining a qualified product. The corrosion resistance and the contact performance of the hardware elastic piece are improved through the measures of optimizing material selection, strengthening surface treatment and the like, and after millions of mechanical cycle tests, the hardware elastic piece can still keep excellent contact performance and stable electrical characteristics, so that the reliability of a product is remarkably improved, and the service life of the product is remarkably prolonged.

The utility model discloses a flexible large-diameter aluminum alloy core aluminum stranded wire electric welding machine cable which comprises an aluminum alloy inner core conductor layer which is formed by concentrically twisting a plurality of aluminum alloy single wires with the wire diameter of 0.08 mm to 0.12 mm, a plurality of aluminum stranded wires are twisted in two to three layers around the outer portion of the aluminum alloy inner core conductor layer to form an aluminum stranded wire outer conductor layer, and the aluminum stranded wire outer conductor layer is formed by twisting a plurality of aluminum stranded wires around the outer portion of the aluminum alloy inner core conductor layer. The aluminum stranded wire is formed by multiple aluminum stranded wires in a compound stranding mode, each aluminum stranded wire is formed by concentric stranding of multiple aluminum alloy single wires with the wire diameter ranging from 0.15 mm to 0.3 mm, the total sectional area of the aluminum alloy inner core conductor layer and the aluminum stranded wire outer conductor layer ranges from 50 mm < 2 > to 185 mm < 2 >, and the aluminum stranded wire outer conductor layer is sequentially wrapped with an ethylene propylene diene monomer rubber isolating layer, an EVA extruded insulating layer and a chloroprene rubber sheath. The outer diameter of the chloroprene rubber sheath is 11 mm to 30 mm. The conductor of the electric welding machine cable has better flexibility and bending resistance, stable electrical characteristics are guaranteed, safety and reliability are enhanced, and durability is better.

The utility model discloses a lightweight anti-rotation garbage grab machine mobile cable comprising three power wire cores which are uniformly distributed at intervals of 120 degrees in the circumferential direction through a Y-shaped polyurethane elastomer isolation core, and the free ends of three forked separator plates of the Y-shaped polyurethane elastomer isolation core extend towards the outer side in an external expansion manner to form fan-shaped parts. Each sector part is provided with a longitudinal hole and is sleeved with a grounding conductor, the Y-shaped polyurethane elastomer isolation core is externally coated with a polyurethane extruded inner sheath, an AFRP reinforced woven tensile layer, a polyurethane extruded outer sheath and an EVA wear-resistant protective layer, and each power wire core comprises a power conductor, a semi-conductive nylon wrapping layer and a polyvinyl chloride insulating layer. Each power conductor comprises an aluminum alloy inner conductor layer formed by twisting aluminum alloy strands, and tinned copper strands are twisted around the outside of the aluminum alloy inner conductor layer to form a copper alloy twisted wire outer conductor layer. The cable is light in weight preparation, the conductor structure is not easy to loosen, the cable core structure is round and balanced, rotation is avoided, and the service life is prolonged.

The high-frequency signal transmission line (101) includes a resin layer stack (3) having a first resin layer (11, 12, 13) and a second resin layer (21, 22) stacked thereon, a signal conductor pattern (4) formed on the first resin layer (11), and a ground conductor layer (5) sandwiching part or all of the resin layer stack (3) and opposite to the signal conductor pattern (4). The Young's modulus of the second resin layer (21, 22) is lower than that of the first resin layer (11, 12, 13). An opening is formed in the first resin layer (12) at least along the position of the signal conductor pattern (4) in the resin layer stack (3), thereby providing a hollow portion (HP) in the resin layer stack (3) by means of the opening.

The utility model discloses a torsion-resistant reinforced aluminum stranded wire electric welding machine cable which comprises a PTFE resin core tube body, and a plurality of aluminum wires are concentrically stranded around the outside of the PTFE resin core tube body to form an aluminum stranded wire conductor. A PTFE semi-directional tape wrapping layer, a foaming PFA extruded inner insulating layer, a PFA wrapped outer insulating layer, a butyronitrile polyvinyl chloride inner cushion layer, an AFRP reinforced woven anti-torsion plain woven net and a butyronitrile polyvinyl chloride sheath layer are sequentially wrapped outside the aluminum stranded wire conductor, and the winding direction of the PTFE semi-directional tape wrapping layer is opposite to the stranding direction of the aluminum stranded wire conductor. According to the cable, a steel core is replaced by the elastic resin core tube, steel core corrosion is avoided, the cable better adapts to various corrosion working conditions and environments, the structure of the aluminum stranded conductor is optimized, the mechanical strength and flexibility of the conductor are improved, the torsion resistance is enhanced, wire breakage is prevented, and the durability is better.

The utility model discloses an airport cable capable of inhibiting wire breakage and provided with shielding control wires, which comprises seven power wire cores, six control wire cores and a para-position type wholly aromatic copolyamide stretched fiber filling core material which are jointly twisted to form a cable core, and the cable core is sequentially coated with a PTFE (Polytetrafluoroethylene) semi-directional belt wrapping antifriction layer and a PUR (Polyurethane) outer sheath, the control wire core comprises a wire core body formed by twisting three insulated wires, the wire core body is coated with a metal wire mixed-weaving sub-shielding layer, the metal wire mixed-weaving sub-shielding layer is formed by reversely and spirally winding and weaving an inner-layer aluminum-magnesium wire and an outer-layer tinned copper wire, the wire diameter of the tinned copper wire is larger than that of the aluminum-magnesium wire, the outer diameter of the control wire core is 2mm to 2.4 mm, and the outer diameter of the PUR outer sheath is 37mm to 45mm. According to the cable, the cable core structure is round and balanced, the bending resistance is better, the optimized shielding layer structure is beneficial to inhibiting wire breakage, the stable shielding performance is ensured, and the durability is better.

The invention aims to disclose an expansion bus system for expansion of a programmable logic controller, and relates to the technical field of signal transmission. At least one slave station module; wherein the master station module and the slave station modules are sequentially cascaded to form a closed annular data link, and the annular data link forms an expansion bus; the expansion bus adopts a differential high-speed physical layer and LVDS (Low Voltage Differential Signaling) transceiving circuits arranged in the master station module and the slave station modules; the master station module comprises a master control processor and a master station programmable logic device. The master station programmable logic device comprises an expansion bus sending interface and an expansion bus receiving interface which are used for being connected with an expansion bus. According to the invention, the communication efficiency, the anti-interference capability, the real-time performance and the system expansibility are obviously improved, and the requirements of a modern industrial control system on a high-performance expansion link can be met.

This application relates to a low-power, high-reliability Schottky chip with self-adjusting injection efficiency, belonging to the field of semiconductor processing technology, comprising: a substrate layer, wherein the substrate layer is highly doped with N. + A substrate layer for reducing the on-resistance of the chip; an epitaxial layer disposed on the substrate layer; a Schottky junction region located on the epitaxial layer; and a Speed ​​structure region containing several small P-type transistors. ++ Grid; P + The protective ring, the P + The junction protection rings are located at both ends of the Schottky junction region; N ++ A junction cutoff ring is located at the chip terminal; multilayer passivation regions are used to enhance the product's resistance to high temperature, high humidity, and radiation; front and back metal electrodes are used for electrical connections. This application employs highly doped N... + The substrate layer effectively reduces the on-resistance of the chip, thereby significantly improving the current transmission efficiency.

The utility model discloses an extrusion-resistant elastic recovery type airport cable which comprises an inner conductor, a cross-linked fluororubber longitudinal hole insulator, an alignment type wholly aromatic copolyamide stretched fiber plain woven net and a polyurethane outer sheath are sequentially coated outside the inner conductor, six longitudinal holes are uniformly distributed in the circumferential direction of the cross-linked fluororubber longitudinal hole insulator, and the cross-linked fluororubber longitudinal hole insulator is provided with a cross-linked fluororubber longitudinal hole insulator and an alignment type wholly aromatic copolyamide stretched fiber plain woven net. The neutral conductor and the control wire core are separately arranged in different longitudinal holes; and the control wire core comprises a control wire core conductor and an XLPE insulating layer. The cable core is balanced and stable in structure, high in mechanical strength, better in extrusion resistance and high in elastic recovery capability, is beneficial to inhibiting wire and core breakage, ensures the stability of electrical characteristics, and is durable in use.

The utility model discloses a single steel wire rope bearing type anti-breaking electric hoist cable, which comprises multi-core control wire cores and steel wire bearing stranded wires, wherein the multi-core control wire cores and the steel wire bearing stranded wires are arranged at intervals and are jointly coated in a polyurethane elastomer outer sheath; the multi-core control wire core comprises four twisted-pair wire cores which are jointly twisted around a nylon fiber rope to form an inner-layer wire core body, the outer portion of the inner-layer wire core body is sequentially coated with a polyurethane elastomer inner sheath and a Kevlar woven mesh, four longitudinal holes are evenly formed in the polyurethane elastomer inner sheath in the circumferential direction, and each longitudinal hole is internally provided with four insulating wires and filled with a nylon fiber core material. Each twisted-pair wire core comprises a twisted-pair wire core body formed by twisting two insulated wires, and the twisted-pair wire core body is sequentially coated with a metal wire mixed-weaving sub-shielding layer and a semi-conductive nylon tape wrapping layer. According to the electric hoist cable, the single steel wire rope is used for bearing, the cable core structure is balanced and stable, the vibration reduction performance is better, core channeling is avoided, the shielding layer structure of the twisted control wire cores is optimized, wire breakage is not prone to occurring, and the durability is better.