DE946091C - Powder core for magnetic heads for magnetic sound recorders - Google Patents
Powder core for magnetic heads for magnetic sound recordersInfo
- Publication number
- DE946091C DE946091C DEL8560A DEL0008560A DE946091C DE 946091 C DE946091 C DE 946091C DE L8560 A DEL8560 A DE L8560A DE L0008560 A DEL0008560 A DE L0008560A DE 946091 C DE946091 C DE 946091C
- Authority
- DE
- Germany
- Prior art keywords
- magnetic
- heads
- powder core
- powder
- sound recorders
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/133—Structure or manufacture of heads, e.g. inductive with cores composed of particles, e.g. with dust cores, with ferrite cores with cores composed of isolated magnetic particles
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Hard Magnetic Materials (AREA)
Description
Pulverkern für Magnetköpfe für Magnettongeräte Die Erfindung bezieht sich auf einer aus magnetisch weichem Pulver, z. B. Eisencarbonyl, bestehenden Kern für Magnetköpfe, insbesondere für Sprechköpfe, für Magnettongeräte. An das Kernmaterial für solche Sprechköpfe werden große Anforderungen hinsichtlich der magnetischen., elektrischen und mechanischen Eigenschaften gestellt. Die Permeabilität muß verhältnismäßig hoch sein. Die Hysterese- und Wirbelstromverluste im Gebiet der hohen Frequenzen müssen gering sein. Die mechanische Festigkeit gegenüber der Schleifwirkung des an den Köpfen vorbeilaufenden Tonträgers muß ebenfalls groß sein..Powder core for magnetic heads for magnetic sound equipment The invention relates on a magnetically soft powder, e.g. B. iron carbonyl, existing core for magnetic heads, in particular for speech heads, for magnetic sound devices. To the core material for such headsets there are great requirements with regard to the magnetic., electrical and mechanical properties. The permeability must be proportionate be high. The hysteresis and eddy current losses in the area of high frequencies must be low. The mechanical strength versus the abrasive effect of the Sound carriers passing by the heads must also be large.
Gemäß der Erfindung ist ein aus magnetisch weichem Pulver, z. B. Eisencarbonyl, bestehender Kern für Magnetköpfe, insbesondere für Sprechköpfe, für Magnettongeräte, gekennzeichnet durch eine Beimischung von Metallcarbid-, insbesondere Eisencarbidpulver. Zweckmäßig werden die erwähnten Stoffe durch ein Bindemittel vereinigt. Unter Umständen können sie auch zusammengesintert werden, was allerdings auch die Gefahr mit sich bringt, daß sie bei unsachgemäßer Behandlung ihre guten magnetischen und elektrischen Eigenschaften verlieren.According to the invention, a magnetically soft powder, e.g. B. iron carbonyl, existing core for magnetic heads, especially for speech heads, for magnetic sound devices, characterized by an admixture of metal carbide, in particular iron carbide powder. The substances mentioned are expediently combined by a binding agent. In certain circumstances they can also be sintered together, which, however, also involves the danger brings that, if improperly handled, they have their good magnetic and electrical Lose properties.
Es sei noch bemerkt, daß es bereits bekannt ist, den Kern eines Magnetisierungskopfes aus den üblichen, aus Eisenpulver und Binder bestehenden Massekernmaterialien herzustellen. Die mechanische Festigkeit und auch die magnetische Qualität dieser Kerne ist jedoch gering, so daß solche Kerne in der Praxis nicht verwendet worden sind.It should also be noted that the core of a magnetizing head is already known from the usual mass core materials consisting of iron powder and binder. The mechanical strength and also the magnetic quality of these cores is, however small, so that such cores have not been used in practice.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEL8560A DE946091C (en) | 1951-03-16 | 1951-03-16 | Powder core for magnetic heads for magnetic sound recorders |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEL8560A DE946091C (en) | 1951-03-16 | 1951-03-16 | Powder core for magnetic heads for magnetic sound recorders |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE946091C true DE946091C (en) | 1956-07-26 |
Family
ID=7257604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEL8560A Expired DE946091C (en) | 1951-03-16 | 1951-03-16 | Powder core for magnetic heads for magnetic sound recorders |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE946091C (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE807725C (en) * | 1948-12-23 | 1951-07-02 | Blaupunkt Werke G M B H Zweign | Magnetic head with pole pieces |
-
1951
- 1951-03-16 DE DEL8560A patent/DE946091C/en not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE807725C (en) * | 1948-12-23 | 1951-07-02 | Blaupunkt Werke G M B H Zweign | Magnetic head with pole pieces |
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