JPS54101306A - Reproduction amplifier circuit for hall head - Google Patents

Reproduction amplifier circuit for hall head

Info

Publication number
JPS54101306A
JPS54101306A JP725678A JP725678A JPS54101306A JP S54101306 A JPS54101306 A JP S54101306A JP 725678 A JP725678 A JP 725678A JP 725678 A JP725678 A JP 725678A JP S54101306 A JPS54101306 A JP S54101306A
Authority
JP
Japan
Prior art keywords
transistor
emitter
base
amplifier circuit
noise
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
JP725678A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6243244B2 (en, 2012
Inventor
Takao Arai
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 JP725678A priority Critical patent/JPS54101306A/ja
Priority to US06/006,912 priority patent/US4218659A/en
Publication of JPS54101306A publication Critical patent/JPS54101306A/ja
Publication of JPS6243244B2 publication Critical patent/JPS6243244B2/ja
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
    • H03F3/181—Low-frequency amplifiers, e.g. audio preamplifiers
    • H03F3/183—Low-frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only
    • 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
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/33—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only
    • G11B5/37—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using galvano-magnetic devices, e.g. Hall-effect devices using Hall or Hall-related effect, e.g. planar-Hall effect or pseudo-Hall effect
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Multimedia (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
  • Amplifiers (AREA)
JP725678A 1978-01-27 1978-01-27 Reproduction amplifier circuit for hall head Granted JPS54101306A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP725678A JPS54101306A (en) 1978-01-27 1978-01-27 Reproduction amplifier circuit for hall head
US06/006,912 US4218659A (en) 1978-01-27 1979-01-26 Amplifier circuit for a hall-effect head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP725678A JPS54101306A (en) 1978-01-27 1978-01-27 Reproduction amplifier circuit for hall head

Publications (2)

Publication Number Publication Date
JPS54101306A true JPS54101306A (en) 1979-08-09
JPS6243244B2 JPS6243244B2 (en, 2012) 1987-09-12

Family

ID=11660940

Family Applications (1)

Application Number Title Priority Date Filing Date
JP725678A Granted JPS54101306A (en) 1978-01-27 1978-01-27 Reproduction amplifier circuit for hall head

Country Status (2)

Country Link
US (1) US4218659A (en, 2012)
JP (1) JPS54101306A (en, 2012)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5671819A (en) * 1979-11-14 1981-06-15 Olympus Optical Co Ltd Multichannel magnetic head and its manufacture
JPS56101617A (en) * 1980-01-18 1981-08-14 Olympus Optical Co Ltd Multichannel magnetic head and its manufacture
US4524331A (en) * 1982-09-13 1985-06-18 Orion Industries, Inc. High input impedance amplifier circuit
US4916409A (en) * 1988-06-15 1990-04-10 Tracy Daniel L Signal conditioner system for musical instruments
US4982155A (en) * 1989-06-29 1991-01-01 Sprague Electric Company Hall sensor with high pass hall voltage filter
US4994731A (en) * 1989-11-27 1991-02-19 Navistar International Transportation Corp. Two wire and multiple output Hall-effect sensor
US5270882A (en) * 1992-07-15 1993-12-14 International Business Machines Corporation Low-voltage, low-power amplifier for magnetoresistive sensor
GB2272122B (en) * 1992-10-28 1996-07-17 Plessey Semiconductors Ltd Wideband constant impedance amplifiers
US5442283A (en) * 1993-09-03 1995-08-15 Allegro Microsystems, Inc. Hall-voltage slope-activated sensor
US6392400B1 (en) * 1998-10-08 2002-05-21 Schlumberger Resource Management Services High linearity, low offset interface for Hall effect devices
US6246290B1 (en) * 1999-10-28 2001-06-12 National Semiconductor Corporation High gain, current driven, high frequency amplifier
ATE520957T1 (de) 2005-01-18 2011-09-15 Teleflex Inc Pedalanordnung

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3452291A (en) * 1965-11-26 1969-06-24 Ibm Differential amplifier
JPS50110254A (en, 2012) * 1974-02-05 1975-08-30

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3267386A (en) * 1964-02-06 1966-08-16 Ampex Two stage direct-coupled transistor amplifier utilizing d. c. positive feedback and d. c.-a. c. negative feedback

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3452291A (en) * 1965-11-26 1969-06-24 Ibm Differential amplifier
JPS50110254A (en, 2012) * 1974-02-05 1975-08-30

Also Published As

Publication number Publication date
US4218659A (en) 1980-08-19
JPS6243244B2 (en, 2012) 1987-09-12

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