10results about How to "Reduce proximity effect" patented technology

The invention relates to a Litz wire manufacturing method and a coil structure, a Litz wire is divided into an inner layer structure and an outer layer structure, the inside of the Litz wire is formed by twisting a plurality of mutually insulated wires, the outside of the Litz wire is covered by an insulating layer, the number of strands of the internally twisted wires is more than 2700, the diameter of a copper wire used for wire twisting is more than 0.2 mm, and the Litz wire is directly blanked and trimmed without winding and forming; according to the Litz wire, a pole-phase group is directly embedded in a stator iron core groove, and only two coil lead outgoing heads are arranged in the pole-phase group, so that welding among coils is reduced; and after the soft litz wire is embedded, the end part can be directly shaped, so that the soft litz wire can be orderly arranged in sequence.

The electrical connector (10) includes a pair of plates (20) having a first conductive plate (12) and a second conductive plate (14), each plate having a central portion (24) and two connecting lugs (32, 34). The connecting lugs of each plate extend longitudinally from opposite edges (28, 30) of the central portion and are laterally offset from each other. The first and second plates are stacked on top of each other, with the central portions overlapping and separated by a gap (36). The connecting lugs of the first and second plates on each of the opposite edge sides are laterally offset from each other. The electrical connector further includes an insulating structure comprising a sandwich of electrically insulating material accommodated in the gap (36) between the central portions of the first and second plates.

The utility model provides an electromagnetic induction coil, a device and a heating smoking set, comprising at least two Litz leads which are arranged side by side and have insulated surfaces, the Litz leads spirally extend and are wound into a multi-turn coil, and an accommodating cavity is formed in the coil along the extending direction; the first end of the coil is bent and then extends to be roughly flush with the second end in the extending direction, and the electromagnetic induction coil generates an induced magnetic field to heat the smoke cartridge in the power-on state. A circuit system can capture and process feedback signals conveniently, the diameter, the number of strands, the number of layers and the number of turns of an optimized electric conductor are flexibly set, a multi-turn coil with appropriate inductance and quality factors is wound, the skin effect and the proximity effect under high-frequency application are reduced, and the multi-turn coil has the advantages of being low in loss and high in reliability. The method is suitable for preparing an aerosol generating system with high working efficiency.

The utility model discloses a kind of intermediate frequency DC reactors, including magnetic core, coil, input conductive row and output conductive row, the magnetic core is oppositely equipped with two iron columns, the coil is equipped with two groups and is respectively wound on the two iron columns of the magnetic core, the coil is wound with thin wide metal foil and is formed, the input conductive row is located in the lower portion of this intermediate frequency DC reactor and is connected with the coil, the output conductive row is located in the upper portion of this intermediate frequency DC reactor and is connected with the coil. The utility model winding loss is small, and the heat dissipation performance is excellent, compact structure, high reliability, strong environmental adaptability, can be adapted to intermediate frequency working condition.

This application provides a common-mode inductor, a switching power supply, an inverter, and communication equipment. The common-mode inductor includes a U-shaped magnetic core, an enameled flat copper wire winding, and a fixing structure. The enameled flat copper wire winding is wound vertically on the U-shaped magnetic core. This vertical winding method allows the enameled flat copper wire to be wound perpendicular to the plane of the U-shaped magnetic core. This winding method can improve the filling rate of the winding, reduce the space occupied by the winding, and also help reduce eddy current losses and proximity effects at high frequencies, thus improving the high-frequency performance of the inductor. The enameled flat copper wire has good conductivity and insulation properties, which can meet the operating requirements of the inductor under high current and high voltage environments. The fixing structure is used to fix the U-shaped magnetic core and the enameled flat copper wire winding, ensuring the stability of the winding's position on the U-shaped magnetic core and preventing loosening or displacement of the winding during inductor operation, thereby ensuring the electrical performance and mechanical stability of the inductor.

This invention relates to a microphone, comprising a diaphragm load and a detection circuit. The diaphragm load includes a diaphragm substrate and a carbon nanotube coating applied to the surface of the diaphragm substrate, used to receive external audio signals and convert them into changing electrical signals. The detection circuit is used to detect voltage or current changes on the diaphragm load and extract the audio signals. This invention mainly uses a carbon nanotube-coated diaphragm load element, resulting in a microphone with advantages such as simple structure, high sensitivity, wide size range, broad frequency response, durability, and good weather resistance.

A driving motor stator winding insulation structure comprises an iron core, a stator groove is arranged in the iron core, a groove insulation layer is arranged on the groove wall of the stator groove, a single-strand conductor and a multi-strand conductor are arranged in the stator groove, the single-strand conductor is composed of a first wire, the first wire is wrapped by a single-strand conductor turn-to-turn insulation layer, and the multi-strand conductor is wrapped by a multi-strand conductor turn-to-turn insulation layer. The outer side of the multi-strand conductor is wrapped with a multi-strand conductor turn-to-turn insulating layer, the multi-strand conductor comprises at least two second wires, and the sectional area of the second wires is smaller than that of the first wires. According to the utility model, the multi-strand conductor is used for replacing a single-strand conductor, and the sectional area of each second wire of the multi-strand conductor is smaller than that of the first wire, so that the skin effect is reduced. The inter-turn potential difference between the second wires of the multi-strand conductor is isolated through the strand insulating layer, the multi-strand conductor and the single-strand conductor are isolated through the multi-strand conductor inter-turn insulating layer and the single-strand conductor inter-turn insulating layer, and therefore the proximity effect is reduced.

The invention relates to the technical field of induction quenching, in particular to a single inductor, an induction quenching system and an induction quenching method. The single inductor comprises a copper pipe and a magnetizer. The copper pipe comprises a concentric-square-shaped non-closed pipe section, a first connecting pipe section and a second connecting pipe section. The head end and the tail end of the concentric-square-shaped non-closed pipe section are connected with the first connecting pipe section and the second connecting pipe section respectively. The number of the magnetizers is multiple, and all the magnetizers are of a groove-shaped structure. The magnetizers are sequentially and tightly buckled on the two long edges of the non-closed pipe section shaped like the Chinese character'hui 'in the direction of the two long edges of the non-closed pipe section shaped like the Chinese character'hui'. And the opening direction of the groove of the magnetizer faces the workpiece. The induction hardening system includes a single inductor. The induction quenching method is used for completing induction quenching of a workpiece. The problems of coupling gap compensation distortion and large deformation of the wear-resistant ring can be solved.

The invention discloses a stator structure based on a multi-layer flat wire winding, which comprises a stator core and a plurality of motor windings, and is characterized in that a plurality of stator grooves penetrating through the two ends of the stator core along the axial direction are formed in the inner wall of the stator core along the circumferential direction; the motor winding comprises a plurality of layers of flat wire conductors which are distributed in the two stator slots at intervals; each layer of flat wire conductor comprises in-slot straight sections located in two stator slots, the corresponding ends of the two in-slot straight sections are connected through end connecting sections located outside the stator slots, and the other ends of the two in-slot straight sections are connected with the corresponding ends of the in-slot straight sections of the two adjacent layers of flat wire conductors through end connecting sections located outside the stator slots; the middle of the end connecting section is provided with a bending receding structure or an overturning transposition structure. Alternating current loss caused by the skin effect and the like can be reduced, the circulation effect is reduced, and therefore the motor efficiency is effectively improved.

The present application discloses a mask and a method for forming the same. The mask comprises: a transparent substrate; a mask pattern layer, located on the surface of the transparent substrate, comprising a chip region for forming a device structure and a mark region for forming an alignment mark arranged outside the chip region; wherein the light shielding rate of the mark region is determined according to the line width of the pattern laid out by the mark region, and when the line width of the pattern laid out by the mark region is less than a threshold, the light shielding rate of the mark region is greater than 0 and less than 1. The present application enables a clear alignment pattern to be formed on a semiconductor substrate based on the alignment mark on the mask.