SU1247954A1 - Small-size multicore transformer - Google Patents

Abstract

The invention relates to the field of electrical engineering, in particular to electrical equipment engineering, and can be used in flat compact power supply units of electronic equipment. The purpose of the invention is to simplify the manufacturing technology and increase the noise immunity of the 7. The device consists of a magnetic conductor made of two identical parts in the form of plates 1, provided with flanges 2 along the edges and right angles with protrusions 3, which form a large number of rods when the plates are superimposed, a primary winding made of a conductor Zigzag, laid in the grooves between the projections 3, the secondary winding 6, made in the form of coils, worn on the rods and the conclusions of the primary and secondary windings. The invention allows to simplify the technology of its manufacture, since both parts of the magnetic circuit can be made by pressing from a ferromagnetic powder material, and the primary winding can be made by forming from a wire or a tape. These operations are less labor intensive. Improving the noise immunity is ensured by flanges around the edges of the plates 2 or about 5 S / I ghgg-Ug- / I r-T J / r-T / 1 H.LMflL.JijI Q & NU vl CO SP ni fi 1 FIG. g

Description

The invention relates to electrical engineering, in particular, to electrical hardware, and can be used in flat compact power units of radioelectronic equipment, including integrated circuits.

circuits requiring a large number of autonomous voltages, as well as a source of a large number of variable voltages controlled synchronously across the primary voltage, pulse transformers and other devices in various fields of technology,

The purpose of the invention is to simplify the manufacturing technology and increase noise immunity.

Fig, 1 shows: Eno transformer section, front view; fig 2 is the same, top view.

The transformer consists of a magnetic conductor made of two identical parts in the form of plates 1, provided with flange-i 2 along the edges and rectangular protrusions 3, which form a large number of rods 4, primary winding 5 made of a conductor, when laying the plates molded in the form of a flat zigzag, laid in the grooves between the projections 3 of the secondary winding 6, made in the form of coils worn on the rods 4, and conclusions 7 and 8 of the secondary and primary windings, respectively.

Transformer works as follows.

When a current flows through the primary winding 5, made in the form of a flat zigzag spanning the rod 4, magnetic fluxes are excited in the latter. Despite the fact that the primary winding does not cover the rods immediately on all four sides а but to the uncovered side of the rod, it takes a part of the winding zizaga, the direction of the current in which coincides, with the direction of the current in the other sides of the zigzag, Since the straight line section of the zigzag is located between two rods, the magnetic flux excited in these rods has the opposite direction, Toe in one rod, the direct magnetic flux, in the adjacent rod - the opposite one. Change

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These fluxes excite EMF in the vit-like secondary winding 6. Consequently, in contrast to the conventional voltage transforming principle J, this transformer uses magnetic fluxes induced by the primary winding to be transformed to transform;

The coils of the secondary winding can be connected in series or in parallel, depending on the required value of the secondary voltage

five

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five

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five

The primary winding is formed in a zigzag zidze with straight lines at right angles and is laid between the protrusions 5 each and 3 of them.

The proposed transformer design makes it possible to simplify the technology of its manufacture j, since both parts of the magnetic core can be made by pressing from a ferromagnetic powder material, and the primary winding can be made by forming from a wire or a tape of the corresponding section. These operations are less labor intensive and do not require highly skilled workers. Noise immunity is provided

flanges along the edges of the plates. I

The design principle in the proposed embodiment also allows the creation of small-sized flat transformers and high-capacity transformers in a flat design. At the same time, the conditions for cooling the transformer are improved, which leads to an improvement in its technical and economic indicators, an increase in reliability and a decrease in the cost of the transformer. The primary and secondary windings of the proposed transformer can be made by printed methods. In this case, both windings are made on a foil-backed dielectric plate (Getinax, fiberglass laminate, etc.) in the form of spirals around holes, corresponding to core sizes put on a plate. Such a structure with a single-layer or p-layer winding, made by printing, makes it possible to create alanar transformers and makes it more technologically advanced.

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Claims (1)

Invention Formula A compact multi-rod transformer containing a ferromagnetic magnetic core with secondary windings placed on the rods and a primary winding, characterized in that, in order to simplify the manufacturing technology and improve noise immunity, M. Petrova Order 4133/53 Compiled by A.Nosenkov Tehred O.Gortvay . Corrector M Circulation 643 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 . Production and printing company, Uzhgorod, Projecto st., 4 2479544 Water is made of two identical. parts in the form of plates provided with flanges along the edges and protrusions forming rods placed in several rows against each other, and the primary winding is made in the form of a flat zigzag and laid between the protrusions, each successively 10 of them. . Proofreader M.Maksimishinets