GB2179212B - Bimorph drive circuit - Google Patents

Bimorph drive circuit

Info

Publication number
GB2179212B
GB2179212B GB8520277A GB8520277A GB2179212B GB 2179212 B GB2179212 B GB 2179212B GB 8520277 A GB8520277 A GB 8520277A GB 8520277 A GB8520277 A GB 8520277A GB 2179212 B GB2179212 B GB 2179212B
Authority
GB
United Kingdom
Prior art keywords
drive circuit
bimorph drive
bimorph
circuit
drive
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
Application number
GB8520277A
Other versions
GB2179212A (en
GB8520277D0 (en
Inventor
Roger Wakefield Fenton
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.)
BAE Systems Electronics Ltd
Original Assignee
Marconi Co 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 Marconi Co Ltd filed Critical Marconi Co Ltd
Priority to GB8520277A priority Critical patent/GB2179212B/en
Publication of GB8520277D0 publication Critical patent/GB8520277D0/en
Publication of GB2179212A publication Critical patent/GB2179212A/en
Application granted granted Critical
Publication of GB2179212B publication Critical patent/GB2179212B/en
Expired 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
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/80—Constructional details
    • H10N30/802—Drive or control circuitry or methods for piezoelectric or electrostrictive devices not otherwise provided for
GB8520277A 1985-08-13 1985-08-13 Bimorph drive circuit Expired GB2179212B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8520277A GB2179212B (en) 1985-08-13 1985-08-13 Bimorph drive circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8520277A GB2179212B (en) 1985-08-13 1985-08-13 Bimorph drive circuit

Publications (3)

Publication Number Publication Date
GB8520277D0 GB8520277D0 (en) 1985-09-18
GB2179212A GB2179212A (en) 1987-02-25
GB2179212B true GB2179212B (en) 1989-05-10

Family

ID=10583715

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8520277A Expired GB2179212B (en) 1985-08-13 1985-08-13 Bimorph drive circuit

Country Status (1)

Country Link
GB (1) GB2179212B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2060674C (en) * 1991-02-08 1996-10-01 Masahiro Tagawa Driving apparatus and a recording and/or reproducing apparatus using the same

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3740571A (en) * 1972-04-18 1973-06-19 Amp Inc High voltage dual isolated output tracking power supply
GB1479033A (en) * 1973-08-14 1977-07-06 Masuda S Electrostatic precipitating apparatus
US4099211A (en) * 1976-09-13 1978-07-04 Ampex Corporation Positionable transducing mounting structure and driving system therefor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3740571A (en) * 1972-04-18 1973-06-19 Amp Inc High voltage dual isolated output tracking power supply
GB1479033A (en) * 1973-08-14 1977-07-06 Masuda S Electrostatic precipitating apparatus
US4099211A (en) * 1976-09-13 1978-07-04 Ampex Corporation Positionable transducing mounting structure and driving system therefor
GB1589625A (en) * 1976-09-13 1981-05-13 Ampex Positionable transducing mounting structure and driving system therefor

Also Published As

Publication number Publication date
GB2179212A (en) 1987-02-25
GB8520277D0 (en) 1985-09-18

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee