M.R.H. A New Era in Magnetic Head Design
The conventional method for reading/writing information from/on a magnetic media (e.g. magnetic tapes in audio and video recorders, computers etc.) uses what is called an inductive head. This consists of several turns of enemelled wire, wound on a specially prepared former as shown in Fig.1. To writ...
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| Format: | Article |
| Language: | English |
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An-Najah National University
1986-09-01
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| Series: | مجلة جامعة النجاح للأبحاث العلوم الطبيعية |
| Online Access: | https://journals.najah.edu/media/journals/full_texts/mrh-new-era-magnetic-head-design.pdf |
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| _version_ | 1849240041026486272 |
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| author | Mazen R. Husni |
| author_facet | Mazen R. Husni |
| author_sort | Mazen R. Husni |
| collection | DOAJ |
| description | The conventional method for reading/writing information from/on a magnetic media (e.g. magnetic tapes in audio and video recorders, computers etc.) uses what is called an inductive head. This consists of several turns of enemelled wire, wound on a specially prepared former as shown in Fig.1. To write (record) information on the magnetic tape, a modulated current signal is injected into the coil. The current treats (induces) a magnetic field at the free ends of the former (poles) which in turn aligns the magnetic particles deposited on the tape, subsequently producing a record of the injected signal. To retrieve the information (i.e. playback the recorded signals) the prerecorded tape is swiped across the poles of the inductive head. In this case the reverse of the write cycle occurs i.e. the magnetic field from the tape influence the former in such a manner as to cause a current flow through the coil having the same form as the recorded signal. A major disadvantage of this type of head is its speed dependence. Since the head senses the rate of change of field, d?/dt (and not the field itself ? its output becomes greatly dependent' on the speed of the tape. Therefore, in tape system, and using an inductive head, it becomes necessary to use some form of electronic equalization in order to correct errors in the signal, resulting from any variations in the speed of the tape. In addition, because of their bulkiness, they become difficult to implement in applications where high packing densities (video tapes) or multi-track system (computer tapes) are used. A new generation of heads have been developed. The heads use the magneto-resistive effect for the read operation and a simplified inductive approach for the write operation. |
| format | Article |
| id | doaj-art-edab76153af248278c8e91ff2666be47 |
| institution | Kabale University |
| issn | 1727-2114 2311-8865 |
| language | English |
| publishDate | 1986-09-01 |
| publisher | An-Najah National University |
| record_format | Article |
| series | مجلة جامعة النجاح للأبحاث العلوم الطبيعية |
| spelling | doaj-art-edab76153af248278c8e91ff2666be472025-08-20T04:00:44ZengAn-Najah National Universityمجلة جامعة النجاح للأبحاث العلوم الطبيعية1727-21142311-88651986-09-0131859110.35552/anujr.a.3.1.455M.R.H. A New Era in Magnetic Head DesignMazen R. Husni0NoneThe conventional method for reading/writing information from/on a magnetic media (e.g. magnetic tapes in audio and video recorders, computers etc.) uses what is called an inductive head. This consists of several turns of enemelled wire, wound on a specially prepared former as shown in Fig.1. To write (record) information on the magnetic tape, a modulated current signal is injected into the coil. The current treats (induces) a magnetic field at the free ends of the former (poles) which in turn aligns the magnetic particles deposited on the tape, subsequently producing a record of the injected signal. To retrieve the information (i.e. playback the recorded signals) the prerecorded tape is swiped across the poles of the inductive head. In this case the reverse of the write cycle occurs i.e. the magnetic field from the tape influence the former in such a manner as to cause a current flow through the coil having the same form as the recorded signal. A major disadvantage of this type of head is its speed dependence. Since the head senses the rate of change of field, d?/dt (and not the field itself ? its output becomes greatly dependent' on the speed of the tape. Therefore, in tape system, and using an inductive head, it becomes necessary to use some form of electronic equalization in order to correct errors in the signal, resulting from any variations in the speed of the tape. In addition, because of their bulkiness, they become difficult to implement in applications where high packing densities (video tapes) or multi-track system (computer tapes) are used. A new generation of heads have been developed. The heads use the magneto-resistive effect for the read operation and a simplified inductive approach for the write operation.https://journals.najah.edu/media/journals/full_texts/mrh-new-era-magnetic-head-design.pdf |
| spellingShingle | Mazen R. Husni M.R.H. A New Era in Magnetic Head Design مجلة جامعة النجاح للأبحاث العلوم الطبيعية |
| title | M.R.H. A New Era in Magnetic Head Design |
| title_full | M.R.H. A New Era in Magnetic Head Design |
| title_fullStr | M.R.H. A New Era in Magnetic Head Design |
| title_full_unstemmed | M.R.H. A New Era in Magnetic Head Design |
| title_short | M.R.H. A New Era in Magnetic Head Design |
| title_sort | m r h a new era in magnetic head design |
| url | https://journals.najah.edu/media/journals/full_texts/mrh-new-era-magnetic-head-design.pdf |
| work_keys_str_mv | AT mazenrhusni mrhanewerainmagneticheaddesign |