ES2044563T3 - Disposicion de circuito para invertir un campo magnetico. - Google Patents

Disposicion de circuito para invertir un campo magnetico.

Info

Publication number
ES2044563T3
ES2044563T3 ES90903369T ES90903369T ES2044563T3 ES 2044563 T3 ES2044563 T3 ES 2044563T3 ES 90903369 T ES90903369 T ES 90903369T ES 90903369 T ES90903369 T ES 90903369T ES 2044563 T3 ES2044563 T3 ES 2044563T3
Authority
ES
Spain
Prior art keywords
diode
pct
magneto
variable switch
terminal
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
Application number
ES90903369T
Other languages
English (en)
Inventor
Friedhelm Zucker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Deutsche Thomson Brandt GmbH
Original Assignee
Deutsche Thomson Brandt GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Deutsche Thomson Brandt GmbH filed Critical Deutsche Thomson Brandt GmbH
Application granted granted Critical
Publication of ES2044563T3 publication Critical patent/ES2044563T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • 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
    • 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
    • G11B11/10595—Control of operating function
    • 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

Abstract

DISPOSITIVOS MAGNETO-OPTICOS PARA GRABAR Y REPRODUCIR INCLUYEN UN ELECTROIMAN QUE INVIERTE LA MAGNETIZACION DE LA CAPA MAGNETO-OPTICA DEL DISCO MAGNETO-OPTICO EN FUNCION DE LOS BITS QUE SE VAN A ALMACENAR. PARA ASEGURAR UNA INVERSION RAPIDA Y SEGURA DEL CAMPO MAGNETICO, SE CONECTAN EN PARALELO, UN CIRCUITO EN SERIE FORMADO POR DIODOS PRIMERO Y SEGUNDO (D1, D2), UN CIRCUITO EN SERIE FORMADO POR DIODOS TERCERO Y CUARTO (D3, D4) Y UNA FUENTE DE TENSION (V). LA CONEXION COMUN (A) DE LOS DIODOS PRIMERO Y SEGUNDO (D1, D2) ESTA CONECTADA A LA CONEXION COMUN (B) DE LOS DIODOS TERCERO Y CUARTO (D3, D4) POR UNA BOBINA (L). EL SEGUNDO DIODO (D2) ESTA PONTEADO POR UN PRIMER CONMUTADOR CONTROLABLE (S1) Y EL CUARTO DIODO (D4) POR UN SEGUNDO CONMUTADOR CONTROLABLE (S2). UNA ENTRADA DE UN SENSOR DE CORRIENTE (SF) ESTA CONECTADA A UNA CONEXION (A) DE LA BOBINA (L) MEDIANTE UN TERCER CONMUTADOR CONTROLABLE (S3) Y A LA OTRA CONEXION (B) MEDIANTE UN CUARTO CONMUTADOR CONTROLABLE (S4). LA OTRA ENTRADA DEL SENSOR DE CORRIENTE (SF) ESTA CONECTADA AL PUNTO DE CONEXION COMUN DE LOS DIODOS PRIMERO Y TERCERO (D1, D3). LA SALIDA DEL SENSOR DE CORRIENTE (SF) ESTA CONECTADA A LA ENTRADA DE UN CIRCUITO DE CONTROL (S) CUYAS SALIDAS (A1, A2, A3, A4) ESTAN CONECTADAS A LAS ENTRADAS DE CONTROL DE LOS CONMUTADORES CONTROLABLES (S1, S2, S3, S4). LOS DIODOS (D1, D2, D3, D4) TIENEN LOS POLOS CONECTADOS EN LA DIRECCION NO-CONDUCTORA A LA FUENTE DE TENSION CONSTANTE (U). APLICACION: DISPOSITIVOS DE GRABACION MAGNETICA Y MAGNETO-OPTICA.
ES90903369T 1989-03-04 1990-02-22 Disposicion de circuito para invertir un campo magnetico. Expired - Lifetime ES2044563T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3907057A DE3907057A1 (de) 1989-03-04 1989-03-04 Schaltungsanordnung zur umkehrung eines magnetfeldes

Publications (1)

Publication Number Publication Date
ES2044563T3 true ES2044563T3 (es) 1994-01-01

Family

ID=6375582

Family Applications (1)

Application Number Title Priority Date Filing Date
ES90903369T Expired - Lifetime ES2044563T3 (es) 1989-03-04 1990-02-22 Disposicion de circuito para invertir un campo magnetico.

Country Status (12)

Country Link
US (1) US5220467A (es)
EP (1) EP0461132B1 (es)
JP (1) JP2807082B2 (es)
KR (1) KR0168847B1 (es)
CN (2) CN1020013C (es)
AT (1) ATE93079T1 (es)
AU (1) AU5109590A (es)
DE (2) DE3907057A1 (es)
DK (1) DK0461132T3 (es)
ES (1) ES2044563T3 (es)
HK (1) HK183396A (es)
WO (1) WO1990010290A1 (es)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3838858A1 (de) * 1988-11-17 1990-05-23 Thomson Brandt Gmbh Schaltungsanordnung zur umkehrung eines magnetfeldes
DE4103777A1 (de) * 1991-02-08 1992-08-13 Mueller A & K Gmbh Co Kg Eigenmediumbetaetigtes, durch ein bistabiles magnetventil gesteuertes servoventil fuer fluessige und gasfoermige medien
US5587851A (en) * 1991-12-24 1996-12-24 Sharp Kabushiki Kaisha Magnetic head driving device with prerecording energization
US5404342A (en) * 1992-01-16 1995-04-04 Sony Corporation Magnetic head device for magneto-optical disc system and magnetic head driving circuit
JP2976697B2 (ja) * 1992-05-29 1999-11-10 松下電器産業株式会社 光磁気ディスク用変調磁界発生装置
JP3098896B2 (ja) * 1992-06-23 2000-10-16 キヤノン株式会社 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
JP3365435B2 (ja) * 1993-06-23 2003-01-14 キヤノン株式会社 光磁気記録装置
JP2976923B2 (ja) * 1997-04-25 1999-11-10 日本電気株式会社 容量性負荷の駆動装置
DE19747033A1 (de) * 1997-10-24 1999-04-29 Daimler Chrysler Ag Elektronische Schalteinrichtung für Magneten
DE19830772A1 (de) * 1998-07-09 2000-01-13 Bosch Gmbh Robert Bus-betreibbare Sensorvorrichtung und entsprechendes Prüfverfahren
CN101588116B (zh) * 2008-05-21 2013-01-02 孙立蓉 风力磁浮发电机
KR101285110B1 (ko) * 2012-02-08 2013-07-17 김종훈 에코 힐링 저주파 자계 생성 장치
KR101516735B1 (ko) * 2013-06-25 2015-05-04 신명섭 다목적 회전구조물

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3037305C2 (de) * 1980-10-02 1986-04-03 Flowtec AG, Reinach, Basel Anordnung zur Erzeugung magnetischer Gleichfelder wechselnder Polarität für die magnetisch-induktive Durchflußmessung
JPH0619863B2 (ja) * 1984-06-13 1994-03-16 株式会社日立製作所 光磁気情報記憶方法及び装置
JPS6161626U (es) * 1984-09-28 1986-04-25
GB8530930D0 (en) * 1985-12-16 1986-01-29 Mansfield P Inductive circuit arrangements
DE3883342T2 (de) * 1987-10-14 1994-03-10 Philips Nv Magnetooptische Aufzeichnungsvorrichtung und Betätigungsschaltung zur Anwendung in derartigen, magnetooptischen Aufzeichnungsvorrichtungen.
FR2632438A1 (fr) * 1988-06-07 1989-12-08 Philips Nv Enregistreur magneto-optique a champ magnetique module
FR2647940B1 (fr) * 1989-06-02 1994-03-04 Thomson Csf Circuit de commande de modulation du champ magnetique pour l'enregistrement d'une memoire magneto-optique

Also Published As

Publication number Publication date
AU5109590A (en) 1990-09-26
CN1054684A (zh) 1991-09-18
US5220467A (en) 1993-06-15
JP2807082B2 (ja) 1998-09-30
CN1020013C (zh) 1993-03-03
HK183396A (en) 1996-10-11
WO1990010290A1 (de) 1990-09-07
DK0461132T3 (da) 1993-10-18
KR0168847B1 (ko) 1999-03-20
EP0461132A1 (de) 1991-12-18
ATE93079T1 (de) 1993-08-15
CN1054864A (zh) 1991-09-25
DE3907057A1 (de) 1990-09-13
DE59002336D1 (de) 1993-09-16
EP0461132B1 (de) 1993-08-11
KR920700450A (ko) 1992-02-19
JPH04504022A (ja) 1992-07-16

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