SU706887A1 - Inductance coil - Google Patents

Description

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The invention relates to radio technology and can be used in radio devices.

A known inductance coil containing an O-shaped ferrite magnet wire with a winding located l.

The disadvantage of such a coil is a low-quality Q with increasing frequency; the relatively large TKU value is susceptibility to magnetization by a dc current flowing through the coil.

The introduction of a non-magnetic gap into the magnetic core of such a coil eliminates these disadvantages; however, this leads to an increase in the inductance of the scattering of the coil, to a considerable complication of the design and to an increase in the cost of the coil, since it requires the manufacture of a complex-shaped magnetic circuit.

The aim of the invention is to reduce the leakage inductance and simplify the design. The specified goal is reached

By the fact that in the inductance coil of a CX-shaped magnetic circuit with a winding located on it, the winding of the inductance is made of two mutually connected sections, placed with gaps relative to each other along the magnetic conductor.

In this design, inductance coils h & Due to the oncoming connection of the winding sections, the magnetic fluxes of both sections are subtracted, forming electrical gaps in the magnetic circuit, which makes it possible, without complicating the design of the coil, to have a high Q, 50 Hp at the coil with a closed O-shaped ferrite magnetic conductor (for example & torr), while significantly reducing the leakage inductance and simplifying the design compared to a non-magnetic gap inductance coil.

On schematically shows the inductance. Sections 1 and 2 of the winding are wound on an O-phase magnetic core 3 and connected in opposite directions. When the coil is connected to an alternating current source in a closed magnetic circuit, countercurrent currents generated by two winding sections are applied. Since the sections of Katutzki are wound on the part of the magnetic circuit, they create sprinkling flows outside of the magnetic circuit, with the result that only a part of the power line pins section 1 and section 2 intersect with the turns of section 2 and section 1, they are mutually and mutually mutually appropriate. This would correspond to an equivalent decrease in the magnetic permeability of the magnetic conductor. The presence of a flow of & results is found on the uneven distribution of the power lines of the lines c) a line of the main wire, resulting in the general case there are two points on the magnetic core, where the resultant magnetic flux from the two windings will be equal to the power gap, which forms the electrical gap in the magnetic core coil, the action of which is equivalent to the action of a non-magnetic gap, with the only difference that, at the same size of the windings, the electrical gap does not increase the leakage inductance. Invention Formulas An inductance coil comprising an O-shaped ferrite magnetic core; with a winding located on it, so that, in order to reduce inductance and dissipation and simplify the design, the winding of the inductance is made of two counter sections with 6 gaps relative to each other along the cable. . Sources of information taken into account in the examination 1. Meinke X. Hf Gündlak F. Radio engineering reference book. M. - L ,, Gosenergoizdat, 1960.