10results about How to "Increase inductance" patented technology

This utility model relates to the field of electronic component technology, and in particular to a vertical dual-winding coupled inductor. The vertical dual-winding coupled inductor of this utility model adopts a dual-winding structure design. The first winding is wound on a magnetic core, and the second winding is wound on a bushing base. The magnetic core is then inserted into the bushing base, so that the first winding and the second winding are combined. The magnetic core of the first winding increases the inductance of the second winding. After assembly, the base and the outer shell are installed to separate the windings. The staggered second wire outlet holes and wire slots ensure that the lead ends of the two windings can maintain a certain distance, reducing the chance of contact and achieving effective isolation, which can effectively avoid the risk of short circuits and failures.

The invention relates to the technical field of electric reactors, and discloses a three-phase zero-sequence electric reactor which comprises side columns, a middle core column, a first yoke, a second yoke, a first winding, a second winding and a third winding. The two ends of the side column and the two ends of the middle core column are fixedly connected with the first yoke and the second yoke respectively. And the first winding, the second winding and the third winding are wound on the middle core column. According to the invention, the structure is simple, the structure is compact, the three-phase symmetry is perfect, the geometric positions are completely symmetrical, the experienced magnetic circuit conditions are completely consistent, and the problem of three-phase current and impedance imbalance caused by the asymmetry of the magnetic circuit is fundamentally eliminated. Besides, zero-sequence magnetic flux is bound in the middle core column and does not need to flow through a side column and a long yoke to form a lengthy path like a traditional structure, so that a magnetic circuit is remarkably short, magnetic resistance is extremely small, larger magnetic flux can be generated under the same number of turns, higher inductance can be obtained by using fewer copper wires, copper loss is reduced, efficiency is improved, and cost is reduced. The inductor has the advantages of high inductance value and high efficiency.

This utility model discloses an antenna structure, antenna device, and electronic device, including a main body and two feed sections respectively connected to the main body; the two feed sections are intertwined to increase the inductance of the antenna structure. The antenna structure is formed by the main body and the two feed sections, and the ends of the two feed sections furthest from the main body are intertwined to make the two feed sections closer together, thereby increasing the coupling degree of the antenna structure and thus improving the inductance of the antenna structure.

The embodiment of the utility model provides an inductor, a circuit board assembly and a household appliance. The inductor comprises a magnetic core, a single group of coils and two pins, wherein the magnetic core comprises a first magnetic column and two second magnetic columns. The two second magnetic columns are arranged at intervals in the first direction, the two ends of the first magnetic column are connected with the two second magnetic columns, the first magnetic column is in an arc shape, and the second magnetic columns extend along a straight line. The single coil is wound on the first magnetic column and the two second magnetic columns. And the two pins are connected to the two ends of the single group of coils. According to the inductor provided by the embodiment of the invention, the two linear second magnetic columns are arranged at the two ends of the arc-shaped first magnetic column, winding of the linear magnetic columns is denser and more uniform, and magnetic leakage is reduced while the inductance value is increased. When the inductor is installed on the circuit board and the extension direction of the second magnetic column is parallel to the thickness direction of the circuit board, the number of winding turns of a single coil is increased by increasing the extension size of the second magnetic column, and the occupied area of the inductor on the circuit board is not increased while the inductance value is increased.

The utility model relates to filter technical field, specifically disclose a compact multistage LC filter, the filter includes rectangle insulating substrate, its four corner position is equipped with mounting hole, the filter shell is fixedly installed above the insulating substrate, the both ends of filter shell are equipped with input and output port, in the filter shell, the insulating substrate top is equipped with at least two stages filter unit, and each stage filter unit contains spiral inductance and interdigital capacitance, and they are connected through microstrip line between the filter unit of adjacent stage alternately cascaded. Two insulating shield baffles are arranged between the adjacent filter units, which are connected with the insulating substrate and the filter shell, and the shielding layer formed between the insulating shield baffles is connected with the bottom ground plane through the metallized via on the insulating substrate. The filter realizes compact volume, excellent filtering performance and anti-interference ability through three-dimensional inductance, shielding structure and optimized layout.

This invention discloses a method for preparing a high-density patch inductor blank, relating to the field of patch power inductors. In the prefabrication process, the patch inductor blank undergoes a first-stage pressing and a second-stage pressing. During the first-stage pressing, the current positions of the upper die head and the second lower die head are kept constant. The first lower die head is activated and controlled to press upwards at a first preset pressure. When the powder height on the periphery of the cavity is higher than a preset dimension of powder height at the center of the cavity, the second-stage pressing begins. During the second-stage pressing, the first lower die head continues to press at the first preset pressure, while the upper die head and the second lower die head are activated and controlled to press downwards and upwards respectively at a second preset pressure. When the powder height on the periphery of the cavity is equal to the powder height at the center of the cavity, the pressing pressure of the first lower die head is adjusted to the second preset pressure and held, resulting in a patch inductor blank. This method significantly improves the compaction density and permeability of the inductor blank.

This invention discloses a design method for an ultra-thin 3D inductor passive device, comprising the following steps: S1, selecting a suitable substrate; S2, setting a bottom metal on the bottom of the substrate, metallizing a hole on the bottom metal, and extending the metallized hole through the substrate and above the upper surface of the substrate; S3, setting a trace metal on the metallized hole, and fixing the trace metal to the upper surface of the substrate; S4, setting bumps on the trace metal, and setting a top metal on the top of the bumps, forming a passive device with 3D inductance. This invention reduces the aspect ratio of the 3D inductor while ensuring inductance performance, lowers the processing difficulty, and reduces the thickness of the manufactured product and the overall thickness of the packaging module.

The invention discloses an oil-immersed reactor and a flexible direct-current power transmission system, and relates to the technical field of flexible direct-current power transmission. The oil-immersed reactor comprises six groups of reactance coils; multiple groups of reactance coils corresponding to multiple groups of bridge arms of the flexible direct current power transmission system are integrated, so that two groups of reactance coils corresponding to one group of upper and lower bridge arms form a two-arm two-phase integrated structure, and three groups of reactance coils corresponding to each group of upper bridge arms or each group of lower bridge arms form a single-arm three-phase integrated structure. By means of the two-arm two-phase integrated structure and the single-arm three-phase integrated structure, larger inductance is provided for a single phase, under the condition that the inductance requirement is not changed, the overall size and the occupied area of the reactor are remarkably reduced, and the power density and the space utilization rate of a system are improved.

The application discloses a kind of plasma source assembly and semiconductor process chamber, belong to the field of semiconductors.A kind of plasma source assembly, applied to semiconductor process chamber, the plasma source assembly includes: insulating medium pipe, Faraday shield, coil and magnetic conducting piece;The insulating medium pipe is used to communicate with the cavity of the semiconductor process chamber;The coil is wound on the outside of the insulating medium pipe;The magnetic conducting piece is encircled in the outer periphery of the coil.A kind of semiconductor process chamber includes the above-mentioned plasma source assembly.The application can at least solve the problem that high power in coil leads to higher power loss.

The utility model provides a kind of co-fired inductor, including first magnetic core, second magnetic core and coil, the coil spiral shape is wound in the surface of first magnetic core, and the number of turns of the coil is more than one, the adjacent two turns of the coil are interval arrangement, the coil is between the first magnetic core and the second magnetic core, the surface of at least part of the first magnetic core and at least part of the coil are wrapped by the second magnetic core, and the first magnetic core side is reversed to.The utility model provides a kind of co-fired inductor, by spiral shape winding, so that the number of turns of coil after winding is at least above one, and then the number of turns of coil winding can be improved, and then the inductance that can be obtained under the same volume can be improved, and the interval arrangement between the adjacent two turns, this design does not need to carry out surface insulation treatment to coil.