DE1733381U - DEVICE FOR GUIDING AND SHIELDING MAGNETIC FIELDS. - Google Patents

Description

5278 / G *;

Society for wireless Ielegraphie mbHo Berlin SW 61 _p Mehringdamm 32 - 34

Hanover the 25 ο November 1953 1 669

Device for steering and shielding magnetic

Unfortunately

In the devices of the electrical engineering * the measuring technology and Lachriohtentechnik are magnetic unfortunately _? © SisenkerB "and the like" used, it is often a difficult task _{P is} the magnetic trap, unfortunately at those place au concentrate ^ where you have them and keep them away from the places; where they interfere «the latter is especially the IaIl ₅ when it comes to magnetic fields _P the τοη alternating currents are generated and dig by penetrating into circles with high amplification then disturbance phenomena by long-wanted önonej or, for example, in learning technology image errors, stripes in the image and caused - -. .

! Price increases
The present iKfss ^ sEg gives a new means to _{P to} avoid such errors or at least to reduce them below a tolerable © Frenze ^ Bs consists in the use of the

substances called "antiferromagnetic" by science (see, for example, "Zeitschrift für angewandte Physik", 1952, Issue 9 _? S * 350) at suitable points of an organ that generates a magnetic field in a device *

In the fig «. 1 and 2 are arrangements as exemplary embodiments selected, in which the magnetic field should preferably remain limited to the space of the core, in which therefore a scattering has a disruptive effect outside the core · In Fig. 1 a transforma- ■;

t tor shown, which consists of the ferromagnetic core 1 and the |

! Price increase for windings 2 exists * According to the äSs £ & HctKHg is around the whole Transformer a jacket 3 made of an antiferromagnetic substance laid »In the embodiment according to Fig * .2, in which the ferromagnetic core consists of parts 4 and 5, and on the Legs of the core part 4, the windings 6 are arranged, is only the zone that is due to the crack in the core substance particularly tends to scatter, with a jacket 7 on an antiferromagne table fabric surrounds »There are also JSlIe in which the geometric shape of the core causes a preferential scattering of the magnetic field. In these cases, too, one becomes involved in the attach the shielding jacket to the appropriate places *

In Fig. 3 an embodiment is shown for the EaIl that the magnetic field should penetrate out of the core, but not hit certain parts of the device, for example the amplifier circuits or the tube itself, some of which are field-sensitive. " I

· - "5 -

This is the case with the deflection coils for oscilloscope tubes © of the picture tubes _? and is shown in Fig. 3 The neck of the Bilfl3? oilir0 is in this illustration with 8 designated Bas deflection coil on system consists of the ferromagne ti see ring 1.0 with the Solsohuhes 9 _? on the the. Windings 11 are applied. The plates 12 consisting of an anti-ferromagnetic substance are provided to shield the stray field

In all the illustrations, the course of the magnetic field is inner = half of the ferromagnetic body is shown in dashed lines

To carry out the invention, it is advisable to use substances use ^. for which refer to the well-known formula for - blessed substances

the constant IL far below t? as close as possible to Hull is based on the formula ^: '. . ■ -.- ■ "-"'

B β D.H

- "Έ

& - a. the anti-ferromagnetic character and 3) mean a prostitute = si © nsize) the constant a should be well above 1,

Claims (5)

ι. 527 870 * 25. .9.56 f. ji I η Ρ? f. 'Protection claims 1.) Device for steering or AJiochirrning of magnetic fields, preferably in measuring devices ^ devices of communications engineering and the like * characterized * that at the points or Trees of the device * that should remain field-free * one or more screens made of "antiferromagnetic" material are arranged, 2) Device according to claim 1, characterized by one or more complete encapsulations of the one causing a magnetic field Organs * 3) Device according to claim 1, -characterized by one or several complete encapsulations of organs susceptible to failure » 4) Device according to claim I _7, characterized by the attachment of individual zones of ⁿ antiferromagnetic "substances for the purpose of directing the magnetic field into certain rooms and keeping it away from other trees". 5) Device according to claim 1 to 4> characterized by the use of substances in which based on the known formula for magnetized substances B = UH the constant M far older %, as close as possible to zero a ä @ a aa.tifer3roniag3aetischerL character and B = a prostitute the Eonstazite a v / eit üfeer 1 li © gt <>