SU881836A1 - Multitrack magnetic head assembly - Google Patents

Description

(54) MULTI-ROUTINE BLOCK OF MAGNETIC HEADS

I

The invention relates to instrument making, namely, to a technique of magnetic recording and reproducing electrical signals.

A multi-track magnetic head block is known, which contains recording and reproducing magnetic heads located in a common housing made of non-magnetic electrically conductive material, such as bronze or aluminum, whose working gap lines are a short distance from each other. A multilayer screen consisting of magnetic and non-magnetic plates is placed between the blocks. The heads are separated from the housing by a magnetic screen in which inserts of electrically conductive material 1 are placed.

However, such a block of magnetic heads is characterized by complexity of construction.

Also known is a multi-track magnetic head unit comprising a two-branch recording core, having a winding for recording information and a two-branch reading core, having a read winding, a shielding device 20 used for magnetic separation of the writing and reading cores, and dL magnetic separation shielding plates adjacent tracks. In this block of heads. The reproductive part has two heads for each recording track, with the second head being located outside the track, in order to compensate for crosstalk, and its winding is connected in series with the signal one, but wound in the opposite direction. This additional head removes the electrical potential induced in the transverse field of the recording core 2 in the readout core.

The disadvantage of this block of magnetic heads is the presence of an additional magnetic head, which reduces the transverse density of the recording and increases its dimensions. In addition, such a block of heads is characterized by complexity of the design, which makes it low-tech to manufacture.

The purpose of the invention is to increase the density of the heads in the block and simplify its manufacturing technology.

This goal is achieved by the fact that in a multitrack block the magician of 1 head contains a non-magnetic clip, layered screens and one magnetic magnetic recording head located one above another with working backshades parallel to the working clearances of the magnetic position 1 each of which contains a core consisting of a C-branch with a coil and a closing branch. located in the grooves of the non-magnetic cage, the C-shaped branches of the MardiTiibix B CGD recording and playback spans are made through one large and small size so that the projections of the coils located on the C-shaped branches of different-sized cores intersect, and layered screens are adjacent to the tornami Small shaped branches, add to the size of the cores with a large C-shaped branch.

FIG. Figure 1 shows schematically a combined block of small heads with increased transient attenuation, a general view; in fig. 2 shows section A-A in FIG. one; pa f g. 3 - axo-measurement image of the block of heads; in fig. 4 - core with a coil and a laminated screen in contact with it.

The multitrack magnetic headband contains three non-magnetic clips 1 - 3 with sockets in which the cores are placed.

The recording part of the magnetic heads unit is made as follows.

The first channel contains a core with a large C-shaped branch 4 on which Coil 5 is located, the second channel with a small C; -shaped Branch 6 on which coil 7 is located. It is near it. A laminated screen 8 is located in the same slot. The third channel contains a core with a large C-shaped branch 4, etc. C-shaped branches of the cores are closed with branches 9.

The reproduction part of the block of heads is made in the same way. The first channel contains a core with a large C-shaped branch 10 on which coil I is located. The second channel contains a core with a small C-shaped branch 12 on which coil 13 is located. Next to it, a layered screen 14 is located in the same groove. Third the channel contains a core with a large C-shaped branch 10, etc. The C-shaped branches of the cores are closed by branches 15. The working gaps are formed by a non-magnet} with 11 gaskets 16 and 17.

Block. Magnetic heads works as follows.

In the recording mode, the magnetic flux in the working gap, due to the current flowing in the coil 5 of the large core 4, creates magnetic imprints on the magnetic carrier.

In this case, part of the magnetic flux penetrates B adjacent catupas, located on both a hundred relative to this coil 5, thereby creating a noticeable interference in the recording channel.

To eliminate this drawback, the cores 4 are much larger in size compared to the cores 6, which allows the coils 5 and 7 to be spaced apart from one another in a horizontal plane. In the slots, where the small cores 6 are located, layered screens 8 are installed, significantly reducing the level of interference and increasing the crosstalk attenuation.

In the playback mode, the magnetic flux in the working gap 17 of the large core 10 and the small core 12 creates in the coils II, 13 EMF, the value of which is directly proportional to the number of turns.

To reduce the penetration noise in the playback channels, the coils of both cores are also spaced apart in the horizontal plane, and in the slots where the small cores 12 are located, layered screens 14 are installed, significantly reducing the level of interference between the playback channels.

The laminated screens 8 and 14 are installed in the same grooves as the small cores 6 and 12, which allows them to be the same depth with the grooves in which the large cores 4 and 10 are installed. This simplifies the loading of these grooves in the non-magnetic clips I and 2 and improves the manufacturing technology of the head unit.

The use of the proposed multi-track magnetic heads unit in magnetic recording accumulators allows a significant increase in transverse recording density, since its design does not include commonly used interchannel screens that increase the dimensions of the head unit.

Claims (1)

Invention Formula A multi-track magnetic head unit containing a non-magnetic clip, layered screens and one above the other magnetic recording heads with working gaps parallel to the working gaps are also located one above the other magnetic playback heads, each of which contains a core consisting of a C-shaped branch with a coil and a closing branch located in the grooves of the nonmagnetic cage, characterized in that, in order to increase the density of the heads in the block and simplify its manufacturing technology, C The cores of the cores in the magnetic recording and playback heads are made through one large and small size so that the projections of the coils located on the C-shaped branches of the cores of different sizes do not intersect, and the layered screens are adjacent to the ends of the C-shaped branches of small size, in addition last up to