GB947773A - Improvements in or relating to electromagnetic recording and reproducing apparatus - Google Patents
Improvements in or relating to electromagnetic recording and reproducing apparatusInfo
- Publication number
- GB947773A GB947773A GB1885760A GB1885760A GB947773A GB 947773 A GB947773 A GB 947773A GB 1885760 A GB1885760 A GB 1885760A GB 1885760 A GB1885760 A GB 1885760A GB 947773 A GB947773 A GB 947773A
- Authority
- GB
- United Kingdom
- Prior art keywords
- coil
- core
- short
- relating
- circuited
- 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
- G11B5/17—Construction or disposition of windings
-
- 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
-
- 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
- G11B5/29—Structure or manufacture of unitary devices formed of plural heads for more than one track
Abstract
947,773. Magnetic recording &c. heads. ARMOUR RESEARCH FOUNDATION OF ILLINOIS INSTITUTE OF TECHNOLOGY. May 27, 1960, No. 18857/60. Heading G5R. An external coil head has means to render the magnetic circuit of high reluctance. Coils 13, 14 linking the core 10 may be short-circuited or connected to low-impedance frequency correcting networks (Figs. 2A, 2B not shown) or alternatively, the core assembly 30 may be enveloped in copper, forming a short-circuited turn. A ferrous member 50 may help to concentrate the field in the region of the coil and the coil may envelope the core on three sides, Fig. 1. The coil may be mounted on a hinged member (Fig. 4 not shown) to permit record loading and a volume-control adjustment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1885760A GB947773A (en) | 1960-05-27 | 1960-05-27 | Improvements in or relating to electromagnetic recording and reproducing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1885760A GB947773A (en) | 1960-05-27 | 1960-05-27 | Improvements in or relating to electromagnetic recording and reproducing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB947773A true GB947773A (en) | 1964-01-29 |
Family
ID=10119601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1885760A Expired GB947773A (en) | 1960-05-27 | 1960-05-27 | Improvements in or relating to electromagnetic recording and reproducing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB947773A (en) |
-
1960
- 1960-05-27 GB GB1885760A patent/GB947773A/en not_active Expired
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