JPS56157106A - Amplifier - Google Patents

Amplifier

Info

Publication number
JPS56157106A
JPS56157106A JP6014080A JP6014080A JPS56157106A JP S56157106 A JPS56157106 A JP S56157106A JP 6014080 A JP6014080 A JP 6014080A JP 6014080 A JP6014080 A JP 6014080A JP S56157106 A JPS56157106 A JP S56157106A
Authority
JP
Japan
Prior art keywords
trs
bases
amplifier
differential
plus
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
JP6014080A
Other languages
Japanese (ja)
Inventor
Satoru Ishii
Masamichi Yumino
Akio Ozawa
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.)
Pioneer Corp
Original Assignee
Pioneer Electronic 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 Pioneer Electronic Corp filed Critical Pioneer Electronic Corp
Priority to JP6014080A priority Critical patent/JPS56157106A/en
Publication of JPS56157106A publication Critical patent/JPS56157106A/en
Pending 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
    • H03F3/45—Differential amplifiers
    • H03F3/45071—Differential amplifiers with semiconductor devices only
    • H03F3/45076—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier
    • H03F3/45179—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier using MOSFET transistors as the active amplifying circuit
    • H03F3/4521—Complementary long tailed pairs having parallel inputs and being supplied in parallel
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/30—Single-ended push-pull [SEPP] amplifiers; Phase-splitters therefor
    • H03F3/3066—Single-ended push-pull [SEPP] amplifiers; Phase-splitters therefor the collectors of complementary power transistors being connected to the output
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/30—Indexing scheme relating to single-ended push-pull [SEPP]; Phase-splitters therefor
    • H03F2203/30012—Indexing scheme relating to single-ended push-pull [SEPP]; Phase-splitters therefor the two SEPP amplifying transistors are Darlington composite transistors
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/30—Indexing scheme relating to single-ended push-pull [SEPP]; Phase-splitters therefor
    • H03F2203/30063—A differential amplifier being used in the bias circuit or in the control circuit of the SEPP-amplifier
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/45—Indexing scheme relating to differential amplifiers
    • H03F2203/45366—Indexing scheme relating to differential amplifiers the AAC comprising multiple transistors parallel coupled at their gates only, e.g. in a cascode dif amp, only those forming the composite common source transistor

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)

Abstract

PURPOSE:To supply a stable bias with no switching distortion, by providing an autobias circuit consisting of an active element that is controlled by a differential amplifier to an SEPP amplifier which is used to an audio power amplifier or the like. CONSTITUTION:The input signal is supplied to the bases of the transistors (TR) Q1 and Q3. The TRs Q1 and Q3 from a pair of differential amplifiers along with the TRs Q2 and Q4, and the output of these amplifiers are supplied to the bases of the output TRs Q9 and Q11. The outputs of these TRs Q9 and Q10 plus TRs Q11 and Q12 give a push-pull driving to the load at a common output point OUT. Then the bias potential is applied via the diodes D1 and D2 to the bases of TRs Q13 and Q16 of one side which form a pair of differential circuits; while the input of the TRs Q9 and Q11 are applied to the bases of the TRs Q14 and Q16 of the other side. Furthermore a cut-off is prevented for the TRs Q9 and Q10 plus TRs Q11 and Q12 by the TRs Q15 and Q18 whose bases are connected to the collectors of the TRs Q13 and Q16 respectively. As a result, the switching distortion can be eliminated.
JP6014080A 1980-05-07 1980-05-07 Amplifier Pending JPS56157106A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6014080A JPS56157106A (en) 1980-05-07 1980-05-07 Amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6014080A JPS56157106A (en) 1980-05-07 1980-05-07 Amplifier

Publications (1)

Publication Number Publication Date
JPS56157106A true JPS56157106A (en) 1981-12-04

Family

ID=13133528

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6014080A Pending JPS56157106A (en) 1980-05-07 1980-05-07 Amplifier

Country Status (1)

Country Link
JP (1) JPS56157106A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2563958A1 (en) * 1984-05-04 1985-11-08 Radiotechnique Compelec Circuit for producing a voltage proportional to the difference of two voltages
JPS60181912U (en) * 1984-05-11 1985-12-03 オンキヨー株式会社 Negative feedback amplifier circuit
US4595883A (en) * 1983-09-06 1986-06-17 Pioneer Electronic Corporation Emitter-follower type single-ended push-pull circuit
JPH07321568A (en) * 1994-05-23 1995-12-08 Sgs Thomson Microelettronica Spa Amplifier

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4595883A (en) * 1983-09-06 1986-06-17 Pioneer Electronic Corporation Emitter-follower type single-ended push-pull circuit
FR2563958A1 (en) * 1984-05-04 1985-11-08 Radiotechnique Compelec Circuit for producing a voltage proportional to the difference of two voltages
JPS60181912U (en) * 1984-05-11 1985-12-03 オンキヨー株式会社 Negative feedback amplifier circuit
JPH07321568A (en) * 1994-05-23 1995-12-08 Sgs Thomson Microelettronica Spa Amplifier

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