Structure and working principle of inductance coil
Information from:internet Published on:2022-03-02
Structure and manufacturing method of inductance coil Abstract: a structure and manufacturing method of inductance coil. The method is to wind the induction coil on the surface of rod-shaped magnetic core in order. The induction coil forms a reverse position at an appropriate position, and an appropriate resistance is connected in parallel with one end of the induction coil at the reverse position to make the output signal impedance match and balance. Then, the annular magnetic core wound with enamelled wire is wound on the induction coil with the aid of enamelled wire, The annular magnetic core is located between the reverse position of the induction coil and the end without resistance. With the help of the annular magnetic core, the resonant wave in the induction coil is filtered out, which has the effect of increasing the bandwidth of the carrier signal and achieves the isolation effect of the interference of the AC signal of the power supply to the RF signal. Multilayer open air core inductance coil Abstract: a multi-layer open air core inductance coil is spirally wound into n ≥ 3 layers, and the layers are connected in parallel. On the spiral wound coil, an insulating tape is padded between the two conductors on the layer greater than or equal to half from inside to outside. At the bisection arc, the conductor and conductor are supported by cushion blocks, which are embedded with ventilation strips to connect the cushion blocks between layers, On the circumference, the inner wire layers are supported by reinforcing brace, the support strip is fixed at the cushion blocks of the inner and outer layers, the ventilation strip extends into the hanger through the end cushion block of the coil, and is axially compressed into a whole by the insulating screw. The inductance coil can be made into multiple layers according to different currents, the axial fixed structure is simple and firm, the eddy current loss is small, the heat dissipation performance is good, and the insulation performance is stable. Method for cooling inductance coil Abstract: the invention relates to a method for cooling an embedded inductive coil, such as a uniform ionization coil, in a vacuum processing chamber. The coil 10 may include a wound hollow tube 11 through which the coolant can flow when pumped by a pump 13. A valve 16 is provided so that air can pass through the hollow pipe in a certain direction, and the flow direction is controlled by a controller 20, which operates the valve 16. The switching frequency of valve 16 can be determined by a process operating condition or by monitoring the temperature of the downstream coolant and / or coil. Differential spring inductance coil and its composition method Abstract: the invention discloses a differential spring inductance coil and its composition method, which is characterized in that it is composed of two spring inductance coils (1) and (2) containing a dielectric coil core, a coil fixing seat and a movable body that senses the measured physical quantity. One end of the two spring inductance coils is fixed on the coil fixing seat and the other end is fixed on the movable body. When the measured physical quantity acts, The length of one spring inductance coil is extended, and the inductance is reduced. The length of the other spring inductance coil is shortened, and the inductance is increased. The invention is used for manufacturing a differential spring inductance sensor. Semiconductor device with inductive coil Abstract: a semiconductor device includes a first chip with an inductive coil, a second chip overlapped with the first chip, a conductive layer, and a magnetic shielding layer arranged between the first and second chips. Inductance coil capable of detecting current Abstract: the invention discloses an inductive coil that can be used for current detection. After the inductive coil is wound into a spiral coil with metal wire, the extension parts on both sides of the spiral coil are bent into a horizontal shape, and then placed inside to fill with magnetic powder, so as to completely cover the spiral coil and press it into a mold without air gap, The horizontal part extending out of the mold at both ends of the coil becomes an electrode part, and then the electrode part is bent along the surface of the coil cladding body; The metal wire used in the inductance coil is made of nickel copper alloy or manganese copper alloy, which has the characteristics of small resistance temperature number (TCR). When the passing current increases, its DC resistance value is not easy to be affected by temperature. Moreover, this kind of material has a relatively stable impedance number, which can make the product obtain a more accurate DC resistance value (DCR) than copper metal wire. A planar microstrip inductance coil and its manufacturing method Abstract: the invention relates to a planar microstrip inductance coil and a manufacturing method thereof. The purpose is to provide a planar microstrip inductance coil with small occupation area, low manufacturing cost and accurate inductance value and a manufacturing method thereof. The utility model relates to a planar microstrip inductance coil, which comprises a printed circuit board and a copper clad strip. The planar microstrip inductance coil is surrounded by a copper clad strip and attached to the printed circuit board in the shape of a plurality of circular planar spiral lines. The manufacturing method includes: for the characteristic impedance value Z0 of the required microstrip line, select the PCB plate and determine the dielectric constant ε r. Calculate the phase velocity VP and wavelength of the stripline λ； Determine the reference spiral copper coil in the computer, etch it on the PCB, and measure its real characteristic impedance and inductance; From the characteristic impedance, the reference calculation formula of accurate inductance and characteristic impedance is obtained, and the width W and wavelength of copper clad strip are recalculated according to the formula λ； The spiral microstrip coil is distributed on the selected PCB and etched. Inductor and inductive coil on it Abstract: an inductor comprises an inductive coil, an iron core and an iron core base. The inductive coil is formed by overlapping and winding at least one circle of a long strip-shaped flat conductor, and a through hole for inserting the iron core is reserved in its center. The iron core is inserted into the through hole of the inductive coil, and the inductive coil is arranged inside the iron core base through the iron core, The two ends of the inductance coil extend from the iron core base to connect the peripheral circuit. The inductor of the invention can effectively reduce its own volume to meet the design requirements of light, thin, short and small electrical products. Wound inductance coil component and its manufacturing method Abstract: the invention discloses a winding inductance coil component, which comprises a magnetic core, a winding coil wound on the magnetic core and a glue curing part. The glue curing part covers the winding coil and fills the gap between the winding coil and the magnetic core. The glue curing part is formed by curing a magnetic mixed material containing glue and magnetic powder, The weight ratio of the magnetic powder to the glue is not less than 10:8. A manufacturing method of the wound inductance coil component is also disclosed. The invention is conducive to stabilizing the coil structure, improving the impact resistance of the magnetic core, and ensuring that the electrical performance and reliability of the product will not deteriorate in the process of severe external vibration. Inductive coil with metal heat sink Abstract: an inductive coil with a metal heat sink is provided. The magnetic core material of the coil is equipped with a metal heat sink, and the other end of the metal heat sink is connected to the metal shell of the transformer. By adopting the structure of the utility model, on the basis of low cost, a better heat dissipation effect of the magnetic core can be obtained, the inductance of the magnetic core will not drop suddenly due to heating, and the reliable operation of the electronic step-down converter and electronic ballast is improved. Automatic constant temperature drying device for inductance coil Abstract: an automatic constant temperature drying device for inductance coil is composed of power input circuit, control circuit, voltage regulating device, current heating circuit and electric measuring device. It is characterized in that the control circuit adopts temperature control circuit and current heating adopts DC heating. It is applicable to the on-site drying treatment of inductive coils of various electrical equipment, which effectively avoids the disadvantages of dismantling and transporting electrical equipment and the previous failure to control temperature, such as high temperature scorching, damaging coil insulation, low temperature and prolonging drying time. The utility model has the advantages of good automatic constant temperature performance, large temperature control and adjustment range, convenient and reliable use, etc. At the same time, it has the positive effects of saving human and material resources and improving work efficiency. Multilayer open air core inductance coil Abstract: a multi-layer open air core inductance coil is spirally wound into n ≥ 3 layers, and the layers are connected in parallel. On the spiral wound coil, an insulating tape is padded between the two conductors on the layer greater than or equal to half from inside to outside. At the bisection arc, the conductor and conductor are supported by cushion blocks, which are embedded with ventilation strips to connect the cushion blocks between layers, The outer end of the hanger is pressed through the insulating pad, and the inner end of the ventilation pad is fixed on the inner support pad. The inductance coil can be made into multiple layers according to different currents, the axial fixed structure is simple and firm, the eddy current loss is small, the heat dissipation performance is good, and the insulation performance is stable. A wire storage ring of inductance coil winding machine Abstract: the utility model relates to a wire storage ring of an inductive coil winding machine. The shape, structure and materials used are similar to the existing wire storage ring. The structural form of the interface end is concave convex sharp angle chimeric on the side, U-shaped groove in the radial direction, and the upper opening is embedded with inner and outer oblique cuts. The interface of the wire storage ring is tight, smooth and stable, and the processing technology is simple. Capacitor with built-in inductive coil Abstract: a capacitor with built-in inductive coil includes at least one independent capacitive element, shell and filler composed of coil core, prime and electrode end face. It is characterized in that an inductive coil is arranged in the shell, which is electrically connected with a capacitive element in series, and a coil skeleton is also arranged in the shell, which is wound on the coil skeleton. The utility model is characterized in that the external inductance coil is reasonably placed inside the capacitor. On the one hand, it has good integrity, safety, reliability and convenient use. On the other hand, it saves materials, simplifies the process and improves the production efficiency and the qualified rate of products. A wire storage ring of inductance coil winding machine Abstract: the utility model relates to a wire storage ring for an inductive coil winding machine. Its transverse surface is a trapezoidal groove structure on the inner side, and the bottom of the outer side is a trapezoidal structure. The structural form of its interface end is concave convex sharp angle chimerism on the side, and the upper opening of the trapezoidal groove is an internal and external oblique notch chimerism in the radial direction. The interface of the wire storage ring is tight, smooth and stable, and the processing technology is simple. A large energy storage inductance coil structure Abstract: the utility model discloses a large energy storage inductance coil structure, which mainly comprises a spiral coil, the spiral coil is wound with a hollow part, and the outside of the spiral coil is covered with an insulating cover; An equal pressure forming magnetic core rod is arranged in the hollow part of the spiral coil and combined with the spiral coil to form an open magnetic circuit inductance body; An equal pressure forming magnetic core outer cover has a hollow part with open ends. The hollow part of the equal pressure forming magnetic core outer cover is sleeved with the open magnetic circuit inductance body to form a closed magnetic circuit inductance coil. The utility model can eliminate the lack of different foot distance caused by manual winding, avoid the working hours of manual winding processing, and prevent the coil from being damaged and short circuited by external force. Improved large energy storage inductance coil structure Abstract: the utility model provides an improved large energy storage inductance coil structure, which comprises: a magnetic core cover, the magnetic core cover is hollow and integrally formed, the upper end of the magnetic core cover is provided with a closed shape, and the bottom end of the magnetic core cover is provided with an open shape; The wire group is provided with a coil and two end wires, and the coil is provided with a hollow part; A magnetic core, the magnetic core is in a long column shape, and the length of the magnetic core is less than the length of the bottom end of the magnetic core cover. The hollow part of the coil is penetrated through the magnetic core, fixed in the magnetic core cover through the length of the magnetic core, and the coil is not exposed through the closed shape of the upper end of the magnetic core cover, so as to achieve the purpose of closing the magnetic core and avoiding the exposure of the coil, And can be processed into plug-in or surface adhesive inductive coils. An inductive coil polarity measuring device Abstract: the utility model is applicable to the field of electronic component measurement, and provides an inductance coil polarity measurement device, which comprises: an inductance coil, including a coil to be measured with a fixed magnetic field and an induction coil; A polarity discrimination circuit for receiving the induced voltage output by the induction coil; An isolation circuit for isolating according to the induced voltage signal output by the polarity discrimination circuit; A holding circuit for holding the instantaneous induced voltage signal isolated by the isolation circuit; A display device for displaying according to the induced voltage signal output by the holding circuit. The utility model adopts an electronic circuit to realize the polarity test of the inductance coil with a fixed magnetic field, overcomes the instability of the compass test in the prior art, and improves the test efficiency and accuracy of the polarity test of the inductance coil; At the same time, the electronic circuit detection method can be carried out simultaneously with other detection methods, saving human resources.
