JPS57148408A - Power amplifier - Google Patents

Power amplifier

Info

Publication number
JPS57148408A
JPS57148408A JP3316481A JP3316481A JPS57148408A JP S57148408 A JPS57148408 A JP S57148408A JP 3316481 A JP3316481 A JP 3316481A JP 3316481 A JP3316481 A JP 3316481A JP S57148408 A JPS57148408 A JP S57148408A
Authority
JP
Japan
Prior art keywords
trs
amplifying stage
common
npn type
bases
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
JP3316481A
Other languages
Japanese (ja)
Inventor
Shigeru Nagasawa
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP3316481A priority Critical patent/JPS57148408A/en
Publication of JPS57148408A publication Critical patent/JPS57148408A/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
    • H03F3/30—Single-ended push-pull [SEPP] amplifiers; Phase-splitters therefor
    • H03F3/3083—Single-ended push-pull [SEPP] amplifiers; Phase-splitters therefor the power transistors being of the same type
    • H03F3/3086—Single-ended push-pull [SEPP] amplifiers; Phase-splitters therefor the power transistors being of the same type two power transistors being controlled by the input signal
    • H03F3/3093—Single-ended push-pull [SEPP] amplifiers; Phase-splitters therefor the power transistors being of the same type two power transistors being controlled by the input signal comprising a differential amplifier as phase-splitting element

Landscapes

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

Abstract

PURPOSE:To improve reliability in terms of a distortion rate and oscillation stability, by composing a power amplifying stage of only a couple of Darlington- connected NPN type transistors (TR). CONSTITUTION:A differential amplifier consisting of two couples of NPN type TRs Q3 and Q4, and Q5 and Q6 whose bases are connected in common, a voltage amplifying stage which has two current mirror circuits, and a power amplifying stage consisting of two couples of darlington-connected NPN type TRs Q9 and Q10, and Q11 and Q12 are provided. The emitters of the TRs Q3-Q6 are connected in common, and are grounded through a resistance R1. The bases of the TRs Q3 and Q4 and those of the TRs Q5 and Q6 connected in common are connected to the collectors of TRs Q1 and Q2 constituting input differential amplifying stages, respectively, and the collectors of the TRs Q4 and Q6 are connected to the bases of the driver TRs Q9 and Q11 of said power amplifying stage.
JP3316481A 1981-03-10 1981-03-10 Power amplifier Pending JPS57148408A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3316481A JPS57148408A (en) 1981-03-10 1981-03-10 Power amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3316481A JPS57148408A (en) 1981-03-10 1981-03-10 Power amplifier

Publications (1)

Publication Number Publication Date
JPS57148408A true JPS57148408A (en) 1982-09-13

Family

ID=12378902

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3316481A Pending JPS57148408A (en) 1981-03-10 1981-03-10 Power amplifier

Country Status (1)

Country Link
JP (1) JPS57148408A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5999808A (en) * 1982-11-29 1984-06-08 Sanyo Electric Co Ltd Amplifier circuit
JPS6268318U (en) * 1985-10-18 1987-04-28
JPH0193908A (en) * 1987-10-05 1989-04-12 Rohm Co Ltd Direct-coupled amplifier

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5999808A (en) * 1982-11-29 1984-06-08 Sanyo Electric Co Ltd Amplifier circuit
JPS6268318U (en) * 1985-10-18 1987-04-28
JPH0193908A (en) * 1987-10-05 1989-04-12 Rohm Co Ltd Direct-coupled amplifier

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