JPS56159834A - Driving circuit for piezoelectric bimorph type transducer - Google Patents

Driving circuit for piezoelectric bimorph type transducer

Info

Publication number
JPS56159834A
JPS56159834A JP6334680A JP6334680A JPS56159834A JP S56159834 A JPS56159834 A JP S56159834A JP 6334680 A JP6334680 A JP 6334680A JP 6334680 A JP6334680 A JP 6334680A JP S56159834 A JPS56159834 A JP S56159834A
Authority
JP
Japan
Prior art keywords
circuits
directions
piezoelectric bimorph
driving circuit
electrodes
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
JP6334680A
Other languages
Japanese (ja)
Inventor
Kiyohiko Himeno
Yukio Shinoda
Susumu Kasai
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 Denshi KK
Original Assignee
Hitachi Denshi KK
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 Denshi KK filed Critical Hitachi Denshi KK
Priority to JP6334680A priority Critical patent/JPS56159834A/en
Publication of JPS56159834A publication Critical patent/JPS56159834A/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
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/58—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B5/584—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on tapes
    • G11B5/588—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on tapes by controlling the position of the rotating heads
    • G11B5/592—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on tapes by controlling the position of the rotating heads using bimorph elements supporting the heads

Landscapes

  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)

Abstract

PURPOSE:To obtain a sufficient displacement without increasing the potential of electrodes by driving each of piezoelectric plates in the directions opposite from polarization directions up to a prescribed range. CONSTITUTION:The polarization directions of piezoelectric plates 2 and 3 are made symmetrical with respect to an intermediate electrode 4, and the respective input signals of amplifier circuits 11 and 10 have a phase difference of 180 deg.. A bias voltage source has a 3/8V voltage value. If the circuits 10 and 11 are so excited that the maximum amplitides of the output signals of the circuits 10 and 11 assume 1/4 volt by the input signal from a signal source 9, voltages (e3), (e4) are applied to the electrodes 5 and 6 of a piezoelectric bimorph element 1. This generates a bend in the bimorph 1 which in turn displaces a magnetic head 8 in the directions of arrows, and the head acts as a transducer.
JP6334680A 1980-05-15 1980-05-15 Driving circuit for piezoelectric bimorph type transducer Pending JPS56159834A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6334680A JPS56159834A (en) 1980-05-15 1980-05-15 Driving circuit for piezoelectric bimorph type transducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6334680A JPS56159834A (en) 1980-05-15 1980-05-15 Driving circuit for piezoelectric bimorph type transducer

Publications (1)

Publication Number Publication Date
JPS56159834A true JPS56159834A (en) 1981-12-09

Family

ID=13226583

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6334680A Pending JPS56159834A (en) 1980-05-15 1980-05-15 Driving circuit for piezoelectric bimorph type transducer

Country Status (1)

Country Link
JP (1) JPS56159834A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5466109A (en) * 1977-10-17 1979-05-28 Ampex Improved drive circuit for controlling movable magnetic head

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5466109A (en) * 1977-10-17 1979-05-28 Ampex Improved drive circuit for controlling movable magnetic head

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