JPS5535520A - Output circuit of power amplifier - Google Patents

Output circuit of power amplifier

Info

Publication number
JPS5535520A
JPS5535520A JP10835178A JP10835178A JPS5535520A JP S5535520 A JPS5535520 A JP S5535520A JP 10835178 A JP10835178 A JP 10835178A JP 10835178 A JP10835178 A JP 10835178A JP S5535520 A JPS5535520 A JP S5535520A
Authority
JP
Japan
Prior art keywords
transistors
circuit
bias circuit
push
adjustment
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
JP10835178A
Other languages
Japanese (ja)
Inventor
Yoshio Miyazaki
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.)
Marantz Japan Inc
Original Assignee
Marantz Japan Inc
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 Marantz Japan Inc filed Critical Marantz Japan Inc
Priority to JP10835178A priority Critical patent/JPS5535520A/en
Publication of JPS5535520A publication Critical patent/JPS5535520A/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

Landscapes

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

Abstract

PURPOSE:To reduce number of diodes in a bias circuit to make compensation voltage small and enable non-adjustment of the bias circuit. CONSTITUTION:In a circuit where a push-pull circuit is organized by transistors Q1, Q3, Q5, Q2, Q4, Q6 and it is devised to take out the output from a load resistor R1, Q1, Q2 of both Darlington first stage of the push-pull are arranged in the reverse polarity and are connected to the following stage through a diode D1 and C2 for temperature compensation of them. Also, to these Q1, Q2 and the following stage, bias voltage is applied with the constant current power supply Ic, and input is introduced directly to Q1, Q2. Through this arrangement, even when the temperature of the transistors and their vicinity will be changed, alway approximately constant idling current should be flow, runaway of transistors is prevented, there is no need to vary the idling current, and non-adjustment of the bias circuit become available.
JP10835178A 1978-09-04 1978-09-04 Output circuit of power amplifier Pending JPS5535520A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10835178A JPS5535520A (en) 1978-09-04 1978-09-04 Output circuit of power amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10835178A JPS5535520A (en) 1978-09-04 1978-09-04 Output circuit of power amplifier

Publications (1)

Publication Number Publication Date
JPS5535520A true JPS5535520A (en) 1980-03-12

Family

ID=14482497

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10835178A Pending JPS5535520A (en) 1978-09-04 1978-09-04 Output circuit of power amplifier

Country Status (1)

Country Link
JP (1) JPS5535520A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0126330A2 (en) * 1983-05-18 1984-11-28 Genrad, Inc. Enhanced-accuracy semiconductor power amplifier
JPS6426799A (en) * 1987-07-22 1989-01-30 Hattori Seishi Kk Kitchen paper
US4827223A (en) * 1988-03-21 1989-05-02 Elantec Buffer amplifier
US6424220B2 (en) 2000-06-05 2002-07-23 Teac Corporation Single-ended push-pull amplifier circuit

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0126330A2 (en) * 1983-05-18 1984-11-28 Genrad, Inc. Enhanced-accuracy semiconductor power amplifier
US4523154A (en) * 1983-05-18 1985-06-11 Genrad, Inc. Enhanced-accuracy semiconductor power amplifier
JPS6426799A (en) * 1987-07-22 1989-01-30 Hattori Seishi Kk Kitchen paper
US4827223A (en) * 1988-03-21 1989-05-02 Elantec Buffer amplifier
US6424220B2 (en) 2000-06-05 2002-07-23 Teac Corporation Single-ended push-pull amplifier circuit

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