ES2069064T3 - Circuito de conexion para inversion de un campo magnetico. - Google Patents
Circuito de conexion para inversion de un campo magnetico.Info
- Publication number
- ES2069064T3 ES2069064T3 ES90900803T ES90900803T ES2069064T3 ES 2069064 T3 ES2069064 T3 ES 2069064T3 ES 90900803 T ES90900803 T ES 90900803T ES 90900803 T ES90900803 T ES 90900803T ES 2069064 T3 ES2069064 T3 ES 2069064T3
- Authority
- ES
- Spain
- Prior art keywords
- pct
- parallel
- magnetic field
- diode
- oscillator
- 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 - Lifetime
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
- G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
- G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
- G11B11/10502—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing characterised by the transducing operation to be executed
- G11B11/10504—Recording
- G11B11/10508—Recording by modulating only the magnetic field at the transducer
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/04—Modifications for accelerating switching
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
- H03K17/60—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being bipolar transistors
- H03K17/66—Switching arrangements for passing the current in either direction at will; Switching arrangements for reversing the current at will
- H03K17/661—Switching arrangements for passing the current in either direction at will; Switching arrangements for reversing the current at will connected to both load terminals
- H03K17/662—Switching arrangements for passing the current in either direction at will; Switching arrangements for reversing the current at will connected to both load terminals each output circuit comprising more than one controlled bipolar transistor
Landscapes
- Magnetic Resonance Imaging Apparatus (AREA)
- Magnetic Treatment Devices (AREA)
- Electronic Switches (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
- Recording Or Reproducing By Magnetic Means (AREA)
- Magnetic Heads (AREA)
- General Induction Heating (AREA)
Abstract
EN EQUIPOS DE GRABACION Y REPRODUCCION MAGNETO-OPTICOS SE HA PREVISTO UN ELECTROIMAN, PARA PODER INVERTIR LA MAGNETIZACION DE LA CAPA MAGNETO-OPTICA DEL DISCO MAGNETO-OPTICO EN FUNCION DE LOS BITS A MEMORIZAR. PARA PODER EFECTUAR UNA RAPIDA Y FIABLE INVERSION DEL CAMPO MAGNETICO SE HA PREVISTO UN CIRCUITO OSCILANTE A PARTIR DE UNA BOBINA (L) Y UNA CAPACIDAD (C), AL CUAL SE LE HA CONECTADO EN PARALELO UN CIRCUITO EN SERIE DE DOS DIODOS (D1,D2) CON UNA POLARIDAD CONTRAPUESTA. CADA DIODO (D1,D2) ES PUENTEABLE POR MEDIO DE UN INTERRUPTOR (S1,S2) CONTROLABLE. CADA CONEXION (A,B) DEL CIRCUITO OSCILANTE ESTA UNIDA CON UN POLO DE UNA FUENTE DE TENSION (+U), A TRAVES DE UNA CONEXION EN SERIE A PARTIR DE UNA RESISTENCIA (R1,R2) Y UN INTERRUPTOR (S3,S4) CONTROLABLE, CUYO OTRO POLO ESTA UNIDO CON EL PUNTO DE CONEXION COMUN DE AMBOS DIODOS (D1,D2). LAS DOS CONEXIONES (A,B) DEL CIRCUITO OSCILANTE, PUEDEN TAMBIEN ESTAR UNIDOS CON UNO DE LOS ELECTRODOS DE CADA DIODO (D3,D4), CUYO OTRO ELECTRODO ESTA UNIDOA TRAVES DE UN INTERRUPTOR (S3,S4) CON UNO DE LOS POLOS DE UNA FUENTE DE ALIMENTACION DE TENSION (-U), Y A TRAVES DE UN CIRCUITO EN SERIE A PARTIR DE UNA INDUCTIVIDAD (L2,L3) Y UNA RESISTENCIA (R1,R2), CON EL OTRO POLO DE LA FUENTE DE ALIMENTACION DE TENSION (-U). UN CIRCUITO DE MANIOBRA (S), CONTROLA LOS INTERRUPTORES (S1-S4) CONTROLABLES DE TAL MODO QUE, SE LE SUMINISTRA ENERGIA AL CIRCUITO OSCILANTE, SI LA CARGA DE LA CAPACIDAD (C) ES INVERTIDA. APARATOS DE REPRODUCCION MAGNETICA Y MAGNETOOPTICOS.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3838858A DE3838858A1 (de) | 1988-11-17 | 1988-11-17 | Schaltungsanordnung zur umkehrung eines magnetfeldes |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2069064T3 true ES2069064T3 (es) | 1995-05-01 |
Family
ID=6367318
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES90900803T Expired - Lifetime ES2069064T3 (es) | 1988-11-17 | 1989-11-17 | Circuito de conexion para inversion de un campo magnetico. |
Country Status (13)
Country | Link |
---|---|
US (1) | US5278818A (es) |
EP (1) | EP0561775B1 (es) |
JP (1) | JP3016854B2 (es) |
KR (1) | KR0169119B1 (es) |
CN (1) | CN1023921C (es) |
AT (1) | ATE118637T1 (es) |
AU (1) | AU4666989A (es) |
DE (2) | DE3838858A1 (es) |
ES (1) | ES2069064T3 (es) |
HK (1) | HK16296A (es) |
HU (1) | HUT58159A (es) |
MY (1) | MY104478A (es) |
WO (1) | WO1990005980A1 (es) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04181504A (ja) * | 1990-11-16 | 1992-06-29 | Canon Inc | 磁気ヘッド駆動装置 |
JP2795757B2 (ja) * | 1991-06-21 | 1998-09-10 | シャープ株式会社 | 磁気ヘッド駆動回路 |
JP2889411B2 (ja) * | 1991-10-31 | 1999-05-10 | キヤノン株式会社 | 磁気ヘッド駆動装置 |
JP2859766B2 (ja) * | 1991-12-24 | 1999-02-24 | シャープ株式会社 | 磁気ヘッド駆動回路 |
US5587851A (en) * | 1991-12-24 | 1996-12-24 | Sharp Kabushiki Kaisha | Magnetic head driving device with prerecording energization |
JP3188339B2 (ja) * | 1992-03-06 | 2001-07-16 | キヤノン株式会社 | 磁気ヘッド駆動装置および光磁気記録装置 |
JP3211999B2 (ja) * | 1992-06-26 | 2001-09-25 | キヤノン株式会社 | 光磁気記録装置 |
US5666333A (en) * | 1995-04-07 | 1997-09-09 | Discovision Associates | Biasing level controller for magneto-optical recording device |
JP2002230799A (ja) * | 2001-02-05 | 2002-08-16 | Funai Electric Co Ltd | アクチュエータ回路 |
KR101285110B1 (ko) | 2012-02-08 | 2013-07-17 | 김종훈 | 에코 힐링 저주파 자계 생성 장치 |
CN105307553B (zh) * | 2013-03-14 | 2018-06-29 | 基文影像公司 | 用于抑制操纵装置期间的电磁干扰的方法和电路 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2972710A (en) * | 1959-04-03 | 1961-02-21 | Sperry Rand Corp | Inductive load transistor bridge switching circuit |
US3400304A (en) * | 1966-02-25 | 1968-09-03 | Raytheon Co | Current reversing circuit |
US3602739A (en) * | 1969-04-16 | 1971-08-31 | Westinghouse Electric Corp | Digital magnetic recording circuit bidirectional load switching having higher load voltage at time of reversal |
GB1376083A (en) * | 1972-01-31 | 1974-12-04 | Hofmann U | Circuit arrangement for recording binary signals on magnetisable storage media |
US3770986A (en) * | 1972-04-20 | 1973-11-06 | Hewlett Packard Co | Switching circuit for inductive loads |
JPS552844B2 (es) * | 1975-02-12 | 1980-01-22 | ||
GB8530930D0 (en) * | 1985-12-16 | 1986-01-29 | Mansfield P | Inductive circuit arrangements |
JPH0833974B2 (ja) * | 1987-08-19 | 1996-03-29 | ソニー株式会社 | 磁気ヘッド駆動回路 |
DE3883342T2 (de) * | 1987-10-14 | 1994-03-10 | Philips Nv | Magnetooptische Aufzeichnungsvorrichtung und Betätigungsschaltung zur Anwendung in derartigen, magnetooptischen Aufzeichnungsvorrichtungen. |
DE3836125A1 (de) * | 1988-10-22 | 1990-05-03 | Thomson Brandt Gmbh | Schaltungsanordnung zur umkehrung eines magnetfeldes |
DE3907057A1 (de) * | 1989-03-04 | 1990-09-13 | Thomson Brandt Gmbh | Schaltungsanordnung zur umkehrung eines magnetfeldes |
-
1988
- 1988-11-17 DE DE3838858A patent/DE3838858A1/de not_active Withdrawn
-
1989
- 1989-11-14 MY MYPI89001587A patent/MY104478A/en unknown
- 1989-11-17 AT AT90900803T patent/ATE118637T1/de not_active IP Right Cessation
- 1989-11-17 CN CN89108608A patent/CN1023921C/zh not_active Expired - Fee Related
- 1989-11-17 EP EP90900803A patent/EP0561775B1/de not_active Expired - Lifetime
- 1989-11-17 US US07/690,955 patent/US5278818A/en not_active Expired - Lifetime
- 1989-11-17 KR KR1019900701523A patent/KR0169119B1/ko not_active IP Right Cessation
- 1989-11-17 DE DE58909015T patent/DE58909015D1/de not_active Expired - Fee Related
- 1989-11-17 JP JP2500994A patent/JP3016854B2/ja not_active Expired - Fee Related
- 1989-11-17 WO PCT/EP1989/001391 patent/WO1990005980A1/de active IP Right Grant
- 1989-11-17 AU AU46669/89A patent/AU4666989A/en not_active Abandoned
- 1989-11-17 ES ES90900803T patent/ES2069064T3/es not_active Expired - Lifetime
- 1989-11-17 HU HU90494A patent/HUT58159A/hu unknown
-
1996
- 1996-01-25 HK HK16296A patent/HK16296A/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
ATE118637T1 (de) | 1995-03-15 |
WO1990005980A1 (de) | 1990-05-31 |
AU4666989A (en) | 1990-06-12 |
MY104478A (en) | 1994-04-30 |
DE58909015D1 (de) | 1995-03-23 |
KR0169119B1 (ko) | 1999-03-20 |
HUT58159A (en) | 1992-01-28 |
JPH04501781A (ja) | 1992-03-26 |
CN1043035A (zh) | 1990-06-13 |
HU900494D0 (en) | 1991-08-28 |
US5278818A (en) | 1994-01-11 |
DE3838858A1 (de) | 1990-05-23 |
HK16296A (en) | 1996-02-02 |
EP0561775A1 (en) | 1993-09-29 |
JP3016854B2 (ja) | 2000-03-06 |
EP0561775B1 (de) | 1995-02-15 |
CN1023921C (zh) | 1994-03-02 |
KR900702522A (ko) | 1990-12-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FG2A | Definitive protection |
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