38results about How to "Improve current resistance" patented technology

The invention provides an electrode assembly, an electrophysiological catheter and an electrophysiological system. The electrode assembly comprises an electrode main body, a sub-electrode assembly and an electric transmission line, wherein the sub-electrode assembly and the electric transmission line are arranged on the electrode main body; the electric transmission line comprises a plurality of ablation lines; the sub-electrode assembly comprises a plurality of first ablation electrodes and a plurality of second ablation electrodes; each ablation line comprises a transmission main line, a first transmission branch line and a second transmission branch line; the first ablation electrodes and the second ablation electrodes are electrically connected with the output ends of the corresponding first transmission branch lines and the output ends of the corresponding second transmission branch lines respectively; and the input ends of the first transmission branch lines and the input ends of the second transmission branch lines are intersected at the transmission main lines. The transmission branch lines of different ablation electrodes are arranged in a parallel manner, so that the resistance value of the ablation lines is reduced, the current resistance of the ablation lines is improved, meanwhile, the ablation boundary of the catheter is also improved, and the ablation depth is increased.

The invention provides a manufacturing method of an integrally molded inductor, and belongs to the technical field of inductance elements. The method comprises the steps of winding a copper wire into a coil and electrically connecting the coil and an electrode pin; mixing a magnetic-conducting material with liquid silicone gel evenly at the mass ratio of 100:(2-15) to form a filler and carrying out heat preservation on the filler under the condition that the temperature is 70-80 DEG C for 0.2-1 hour; and putting the coil connected with the electrode pin into a mold, filling the mold with the filler and carrying out integral stamping to form the integrally molded inductor. The manufacturing method is simple; and the technological process is saved. Furthermore, the invention further provides the integrally molded inductor manufactured by the manufacturing method. The current resistance of the integrally molded inductor is significantly improved; the inductor is stable in structure; the magnetic loss can be reduced; and the noise at work can be reduced.

The invention belongs to the field of power supplies, and provides a stabilized switching power supply. A switching type DC-DC voltage stabilizer power source is formed by independent electronic elements, a wide-input voltage range is provided, the work state of an overall circuit is automatically adjusted according to input voltage, the output voltage is stable and can be set by adjusting element parameters, and the output current is determined by the input end and a circuit element. A large current element can be selected to improve the current resistance of the circuit, and the feedback link of the circuit is simple and reliable in design. As no integrated chip is used, the situation that when the voltage of a circuit of an integrated chip is used, the current parameters are basically fixed is avoided.

The invention relates to a high-frequency absorptive film of a capacitor. Four layers of films are wound coaxially to form a capacitor core; the film comprises a first metallized film, a second metallized film, a third metallized film and a fourth metallized film sequentially from inside to outside; the first metallized film is a two-side metallized film; the third metallized film is a single-side metallized film; the second metallized film and the fourth metallized film are optical films. According to the high-frequency absorptive film of the capacitor disclosed by the invention, the volume of the capacitor is smaller than that of a capacitor which is formed from a conventional winding structure in a winding manner at the presence of the same voltage-tolerant strength; in addition, the current tolerance of the capacitor is increased, the high-frequency impact tolerance is also increased a lot, and the practical use requirements are satisfied.

The invention discloses a wave-cut remaining edge type thin-film capacitor, which comprises a capacitor core 1 and a capacitor body 2. The capacitor core 1 is composed of four parts which are two layers of parallel thin-film dielectric 3, a metal coating electrode 4 located on the thin-film dielectric 3, a metal spraying layer on the surface of the metal coating electrode 4 and a lead 5 welded on the metal spraying layer. The right side of the metal coating electrode 4 and the right side of the thin-film dielectric 3 are both of a wave-shaped structure formed in a wave-cut manner. A remaining edge 6 is disposed between the right side of the metal coating electrode 4 and the right side of the thin-film dielectric 3. The invention has the beneficial effects of enhanced current resistance, low loss, safety and environmental protection, simple structure and high practicality.

The invention discloses a high current resistance vehicle power off switch. The high current resistance vehicle power off switch comprises a casing body, a movable contact assembly and a static contact assembly, wherein the movable contact assembly and the static contact assembly are arranged in the casing body. The high current resistance vehicle power off switch further comprises a rotating shaft assembly which controls the movable contact assembly move up and down. The movable contact assembly comprises a copper plate and a pair of silver contact which is arranged on the copper plate. The static contact assembly comprises two wiring terminals. Each wiring terminal is provided on a silver contact. The diameter of each silver contact is between 9 and 10mm. The high current resistance vehicle power off switch provided by the invention has the advantages of high structural strength and great tightness, can meet harsh environment requirements, can withstand high current and high voltage, can meet the performance requirement of power on and off of a vehicle, and can be widely used in the field of the resistance vehicle power off switch.

The invention discloses a thin film capacitor, which comprises a capacitor core, at least one first metal shell, at least one second metal shell, a first connecting sheet and a second connecting sheet, the first metal shell and the second metal shell are spliced together through an insulator to jointly define an accommodating cavity; the first metal shell is provided with a first leading-out terminal, and the second metal shell is provided with a second leading-out terminal; the first connecting sheet is connected with the capacitor core and the first metal shell; the second connecting sheet is connected with the capacitor core and the second metal shell; the capacitor core, the first connecting sheet and the second connecting sheet are arranged in the accommodating cavity and are sealed through pouring sealant; therefore, the capacitor has better heat dissipation capability while the current resistance capability is improved, and the thermal resistance of the product is greatly reduced.

The invention discloses a welding technology for pure nickel and nickel plated brass material laminated solder paste. The welding technology comprises the following steps of producing a special pure nickel and nickel plated brass material laminated screen board for printing; performing bidrectional printing on nickel sheets or copper cladding nickel sheets by applying a nickel sheet printing fixture; laminating and aligning two nickel sheets with the copper cladding nickel sheets, and allowing the error of the two nickel sheets and the copper cladding nickel sheets after laminating to be smaller than a set tolerance standard; loading and fixing the laminated nickel sheet and copper cladding nickel sheet by using a permanent magnet solder pallet carrier; adjusting the welding temperature, and performing reflow soldering by using a mesh belt solder pallet or a rail solder pallet; and performing heat-sink cooling on the nickel sheet printing fixture by using a high-speed cooling fan, andchecking the quality of laminated and welding nickel sheet products. The welding technology for the pure nickel and nickel plated brass material laminated solder paste can improve the current resistance of the nickel sheets and ensure the welding quality and has wider use range of products; in particular to the design of a lithium battery pack, the manufacturing cost is greatly reduced, and equipment investment is reduced; and in addition, the development speed of new products is high, the investment is low and the quality reliability is higher.

The invention relates to a multipoint plug (1) for electrically connecting metallic strip conductors (21, 22) arranged on both sides of a circuit board (11) comprising a base body (2) provided with mutually opposite flexible contacts (3, 3a, 3b, 3c) which are longitudinally arranged in such a way that the front face of the circuit board (11) is insertable between said contacts (3, 3a, 3b, 3c), thereby producing electric contact thereof with the strip conductors (21, 22). The opposite contacts (3, 3a, 3b, 3c) are electrically insulated with respect to each other inside the base body (2). The aim of the invention is to develop a small-sized multipoint plug which exhibits as high electric strength as possible. For this purpose, a recess (24) is shaped between opposite contacts (3, 3a, 3b, 3c) in a longitudinal direction of the base body. When the circuit board (11) is inserted, said recess encompasses the frontal face thereof in such a way that an extended creepage distance is formed between opposite contacts (for instance, 3a, 3b).

The invention relates to a metallized film capacitor and a metal layer spraying and heat treatment method thereof, the metallized film capacitor comprises a capacitor core, and the metallized film capacitor is characterized in that the capacitor core is of a round core type or a flat core type and is formed by winding at least one polypropylene film, and a plurality of metal layers are respectively sprayed at the upper end and the lower end of the capacitor core after the capacitor core is wound; wherein a plurality of evaporation aluminum layers are distributed on the surface of the polypropylene film, metal thickening layers are arranged on the evaporation aluminum layers, and reserved edges are arranged between the adjacent evaporation aluminum layers. And a plurality of different materials are adopted to spray the plurality of metal layers, so that the end face over-current capability and the heat dissipation capability of the capacitor product are effectively improved. Through cooperation of heat treatment and a hot pressing clamp, it can be effectively guaranteed that the temperature difference inside and outside the capacitor core is small, it is guaranteed that internal tension of the wound capacitor core is fully released, uniformity of internal tension of a polypropylene film is guaranteed, the application range is wide, and practicability is high.

The invention provides a low-thickness current-resistant SiC PIN diode and a manufacturing method thereof. The diode is characterized in that the lower side surface of an N-type heavily-doped semiconductor transmission layer is connected to the upper side surface of an N-type ohmic electrode; the lower side surface of an N-type intrinsic layer is connected to the upper side surface of the N-type heavily-doped semiconductor transmission layer; the lower side surface of a P-type heavily-doped diamond transmission layer is connected to the upper side surface of the N-type intrinsic layer; and the lower side surface of a P-type ohmic electrode is connected to the upper side surface of a P-type heavily-doped diamond transmission layer. Thus, the thickness of the diode is reduced, and current-withstanding capability is increased by four times.

The invention discloses a flexible flat cable which comprises an insulating body, a first conductor layer and a second conductor layer are arranged in the insulating body at intervals in the thickness direction, and each of the first conductor layer and the second conductor layer comprises a plurality of conductors; the plurality of conductors are sequentially arranged at intervals along the width direction of the insulating body, and the width direction of the conductors is parallel to the width direction of the insulating body; the conductor comprises a base part and an extension part, and the extension part is arranged on one side of the width direction of the base part; the first conductor layer and the second conductor layer are arranged in a staggered manner, and the staggered distance is smaller than the width of the conductor, so that the conductor is widened on the premise that the number of channels, the overall width of the insulating body and the number of the conductors are not changed during data communication; and the current resistance of the flexible flat cable is improved.