FR2367379A1 - Circuit amplificateur matriciel - Google Patents

Circuit amplificateur matriciel

Info

Publication number
FR2367379A1
FR2367379A1 FR7721333A FR7721333A FR2367379A1 FR 2367379 A1 FR2367379 A1 FR 2367379A1 FR 7721333 A FR7721333 A FR 7721333A FR 7721333 A FR7721333 A FR 7721333A FR 2367379 A1 FR2367379 A1 FR 2367379A1
Authority
FR
France
Prior art keywords
amplifier circuit
transistors
matrical
pair
matrix
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.)
Granted
Application number
FR7721333A
Other languages
English (en)
Other versions
FR2367379B1 (fr
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.)
Control Data Corp
Original Assignee
Control Data Corp
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 Control Data Corp filed Critical Control Data Corp
Publication of FR2367379A1 publication Critical patent/FR2367379A1/fr
Application granted granted Critical
Publication of FR2367379B1 publication Critical patent/FR2367379B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/72—Gated amplifiers, i.e. amplifiers which are rendered operative or inoperative by means of a control signal
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B15/12—Masking of heads; circuits for Selecting or switching of heads between operative and inoperative functions or between different operative functions or for selection between operative heads; Masking of beams, e.g. of light beams
    • 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
    • G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
    • G11B5/09—Digital recording
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
  • Digital Magnetic Recording (AREA)
  • Electronic Switches (AREA)

Abstract

L'invention concerne les amplificateurs ayant une structure matricielle et destinés à amplifier sélectivement un signal d'entrée parmi plusieurs. L'étage d'entrée du circuit amplificateur matriciel de l'invention est constitué par des paires de transistors branchés en base commune, comme la paire 30, 32. Les signaux appliqués sur les lignes 106, 108, 110, 112 sélectionnent une paire de transistors, et mettent les autres hors service. Les bases de ces transistors reçoivent un signal de réjection de mode commun, pour améliorer l'immunité au bruit. Application aux mémoires à disque magnétique.
FR7721333A 1976-10-07 1977-07-11 Circuit amplificateur matriciel Granted FR2367379A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/730,501 US4085383A (en) 1976-10-07 1976-10-07 Matrix selection amplifier circuit for low impedance heads in a magnetic disc memory device

Publications (2)

Publication Number Publication Date
FR2367379A1 true FR2367379A1 (fr) 1978-05-05
FR2367379B1 FR2367379B1 (fr) 1984-04-13

Family

ID=24935630

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7721333A Granted FR2367379A1 (fr) 1976-10-07 1977-07-11 Circuit amplificateur matriciel

Country Status (8)

Country Link
US (1) US4085383A (fr)
JP (1) JPS6016004B2 (fr)
AU (1) AU511786B2 (fr)
CA (1) CA1081805A (fr)
DE (1) DE2727831A1 (fr)
FR (1) FR2367379A1 (fr)
GB (1) GB1536385A (fr)
NL (1) NL170211C (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0008617A1 (fr) * 1978-08-17 1980-03-19 International Business Machines Corporation Préamplificateur de lecture/écriture avec détecteur électrique de court-circuit
FR2541028A1 (fr) * 1983-02-15 1984-08-17 Control Data Corp Circuit d'excitation et preamplificateur pour transducteur magnetique
EP0504570A2 (fr) * 1991-03-20 1992-09-23 Tandberg Data A/S Arrangement de circuit pour la commutation sélective de signaux de lecture d'une tête magnétique multiple dans un enregistreur magnétique

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4165494A (en) * 1978-04-28 1979-08-21 Circuit Technology Incorporated Bi-state linear amplifier
DE3232610A1 (de) * 1982-09-02 1984-03-08 Robert Bosch Gmbh, 7000 Stuttgart Wiedergabevorverstaerker
JPS61217907A (ja) * 1985-03-25 1986-09-27 Hitachi Ltd デ−タ書き込み／読みだし回路

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3235840A (en) * 1961-04-28 1966-02-15 United Electrodynamics Inc Transistorized multiple-channel signal switching system
FR1466541A (fr) * 1965-12-09 1967-01-20 Cft Comp Fse Television Commutateur électronique à transistors
US3399357A (en) * 1965-08-26 1968-08-27 Sperry Rand Corp Wideband transistor amplifier with output stage in the feedback loop
US3624538A (en) * 1969-05-21 1971-11-30 Bell Telephone Labor Inc Time multiplexer with feedback

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1193994B (de) * 1960-12-07 1965-06-03 Elektronische Rechenmasch Ind Elektronische Auswahleinrichtung
US3316495A (en) * 1964-07-06 1967-04-25 Cons Systems Corp Low-level commutator with means for providing common mode rejection
US3327236A (en) * 1964-07-13 1967-06-20 Burroughs Corp Gain setting switching circuit responsive to automatically emitted digital levels
US3387224A (en) * 1965-05-21 1968-06-04 Leeds & Northrup Co Measuring systems with common-mode interference suppression

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3235840A (en) * 1961-04-28 1966-02-15 United Electrodynamics Inc Transistorized multiple-channel signal switching system
US3399357A (en) * 1965-08-26 1968-08-27 Sperry Rand Corp Wideband transistor amplifier with output stage in the feedback loop
FR1466541A (fr) * 1965-12-09 1967-01-20 Cft Comp Fse Television Commutateur électronique à transistors
US3624538A (en) * 1969-05-21 1971-11-30 Bell Telephone Labor Inc Time multiplexer with feedback

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0008617A1 (fr) * 1978-08-17 1980-03-19 International Business Machines Corporation Préamplificateur de lecture/écriture avec détecteur électrique de court-circuit
FR2541028A1 (fr) * 1983-02-15 1984-08-17 Control Data Corp Circuit d'excitation et preamplificateur pour transducteur magnetique
EP0504570A2 (fr) * 1991-03-20 1992-09-23 Tandberg Data A/S Arrangement de circuit pour la commutation sélective de signaux de lecture d'une tête magnétique multiple dans un enregistreur magnétique
EP0504570A3 (en) * 1991-03-20 1992-11-25 Tandberg Data A/S Circuit arrangement for selective switching of read-signals of a multiple magnetic head on a magnetic layer memory

Also Published As

Publication number Publication date
FR2367379B1 (fr) 1984-04-13
AU511786B2 (en) 1980-09-04
CA1081805A (fr) 1980-07-15
GB1536385A (en) 1978-12-20
JPS6016004B2 (ja) 1985-04-23
JPS5345513A (en) 1978-04-24
NL170211B (nl) 1982-05-03
NL170211C (nl) 1982-10-01
DE2727831C2 (fr) 1983-10-06
US4085383A (en) 1978-04-18
AU2782677A (en) 1979-02-15
DE2727831A1 (de) 1978-04-13
NL7707634A (nl) 1978-04-11

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Legal Events

Date Code Title Description
ST Notification of lapse