JPS6414702A - Driving circuit for thin film magnetic head - Google Patents

Driving circuit for thin film magnetic head

Info

Publication number
JPS6414702A
JPS6414702A JP16863987A JP16863987A JPS6414702A JP S6414702 A JPS6414702 A JP S6414702A JP 16863987 A JP16863987 A JP 16863987A JP 16863987 A JP16863987 A JP 16863987A JP S6414702 A JPS6414702 A JP S6414702A
Authority
JP
Japan
Prior art keywords
head
circuit
driving circuit
fed back
increased
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.)
Pending
Application number
JP16863987A
Other languages
Japanese (ja)
Inventor
Hiromi Matsushige
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP16863987A priority Critical patent/JPS6414702A/en
Publication of JPS6414702A publication Critical patent/JPS6414702A/en
Pending legal-status Critical Current

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
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B2005/0002—Special dispositions or recording techniques
    • G11B2005/0005—Arrangements, methods or circuits
    • G11B2005/001—Controlling recording characteristics of record carriers or transducing characteristics of transducers by means not being part of their structure
    • G11B2005/0013—Controlling recording characteristics of record carriers or transducing characteristics of transducers by means not being part of their structure of transducers, e.g. linearisation, equalisation
    • G11B2005/0016—Controlling recording characteristics of record carriers or transducing characteristics of transducers by means not being part of their structure of transducers, e.g. linearisation, equalisation of magnetoresistive transducers

Landscapes

  • Digital Magnetic Recording (AREA)

Abstract

PURPOSE:To omit a connecting capacitor between a magneto-resistance effect type (MR) head and a circuit by differentially amplifying a signal component not to be fed back as a voltage change. CONSTITUTION:When the resistance values of MR head elements MR1, MR2 are increased by the abrasion, etc., of the MR head, the bias voltage of the MR head 1 is unbalanced from the reference bias of the MR head 1. At that time, a feedback circuit detects and amplifies an error signal so as to reduce current supply to a sense current source circuit 2, so that the MR head 1 is held at a proper bias state. Namely, when the MR head 1 is abrased and the resistance values are increased, constant voltage driving for reducing sense current is executed reversely proportional to said increment in a DC system. On the other hand, the signal component not to be fed back is amplified by the initial differential amplifier 6. Consequently, the connecting capacitor can be removed and the LSI formation of an MR head driving circuit can be easily attained.
JP16863987A 1987-07-08 1987-07-08 Driving circuit for thin film magnetic head Pending JPS6414702A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16863987A JPS6414702A (en) 1987-07-08 1987-07-08 Driving circuit for thin film magnetic head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16863987A JPS6414702A (en) 1987-07-08 1987-07-08 Driving circuit for thin film magnetic head

Publications (1)

Publication Number Publication Date
JPS6414702A true JPS6414702A (en) 1989-01-18

Family

ID=15871769

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16863987A Pending JPS6414702A (en) 1987-07-08 1987-07-08 Driving circuit for thin film magnetic head

Country Status (1)

Country Link
JP (1) JPS6414702A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0594138A2 (en) * 1992-10-19 1994-04-27 Sharp Kabushiki Kaisha Multi-track magnetic signal reproducing apparatus
EP0829733A2 (en) * 1996-09-17 1998-03-18 International Business Machines Corporation Electronic magnetoresistive sensor biasing
KR100724017B1 (en) * 2004-11-30 2007-05-31 산요덴키가부시키가이샤 Fuel Cell System and Method for Operating the Same

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0594138A2 (en) * 1992-10-19 1994-04-27 Sharp Kabushiki Kaisha Multi-track magnetic signal reproducing apparatus
EP0594138A3 (en) * 1992-10-19 1996-08-14 Sharp Kk Multi-track magnetic signal reproducing apparatus
EP0829733A2 (en) * 1996-09-17 1998-03-18 International Business Machines Corporation Electronic magnetoresistive sensor biasing
EP0829733A3 (en) * 1996-09-17 2000-02-23 International Business Machines Corporation Electronic magnetoresistive sensor biasing
EP1469322A2 (en) * 1996-09-17 2004-10-20 International Business Machines Corporation Electronic magnetoresistive sensor biasing
KR100724017B1 (en) * 2004-11-30 2007-05-31 산요덴키가부시키가이샤 Fuel Cell System and Method for Operating the Same

Similar Documents

Publication Publication Date Title
EP0642029B1 (en) A hall-voltage slope-activated sensor
AU1055000A (en) Disk drive with thermal asperity reduction circuitry using magnetic tunnel junction sensor
MY116052A (en) Disk drive with thermal asperity reduction circuitry using a magnetic tunnel junction sensor
EP0346011A3 (en) Amplifiers
JPH04369878A (en) Magnetoresistance effect element circuit
EP1239585A4 (en) Differential amplifier
US4435653A (en) In-phase voltage elimination circuit for Hall element
JPS6414702A (en) Driving circuit for thin film magnetic head
GB1536161A (en) Differential amplifiers
GB1533168A (en) Amplification system
US7177107B2 (en) Preamplifier circuit with signal interference cancellation suitable for use in magnetic storage devices
GB1491704A (en) Full wave rectifiers
CA2108639A1 (en) Multi-Track Magnetic Signal Reproducing Apparatus
JPS55129910A (en) Magnetic signal reproducing device
JPS6117072A (en) Resistance variation detecting circuit
JP3684691B2 (en) Temperature characteristic compensation circuit and magnetoelectric conversion element driving device using the temperature characteristic compensation circuit
KR900007370Y1 (en) Kind detecting circuit for the magnetic tape
JPH0610842B2 (en) Resistance change detection circuit
KR20000046295A (en) Circuit for automatically controlling op amp input-offset-voltage
CA2248337A1 (en) Offset correction circuit and dc amplification circuit
JPS626403A (en) Head amplifier device
SU641366A1 (en) Magnetization curve registering device
JPS55152415A (en) Detector for angle of rotation
JP2770292B2 (en) Circuit for detecting change in resistance of magnetoresistive element
SU1646044A1 (en) Voltage amplifier