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JPS5689108A - Bias setting circuit of push-pull amplifier - Google Patents

Bias setting circuit of push-pull amplifier

Info

Publication number
JPS5689108A
JPS5689108A JP16559179A JP16559179A JPS5689108A JP S5689108 A JPS5689108 A JP S5689108A JP 16559179 A JP16559179 A JP 16559179A JP 16559179 A JP16559179 A JP 16559179A JP S5689108 A JPS5689108 A JP S5689108A
Authority
JP
Japan
Prior art keywords
push
idling current
pull amplifier
setting circuit
bias setting
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
JP16559179A
Other languages
Japanese (ja)
Inventor
Hikari Kondo
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.)
Victor Company of Japan Ltd
Original Assignee
Victor Company of Japan 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 Victor Company of Japan Ltd filed Critical Victor Company of Japan Ltd
Priority to JP16559179A priority Critical patent/JPS5689108A/en
Publication of JPS5689108A publication Critical patent/JPS5689108A/en
Pending legal-status Critical Current

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  • Amplifiers (AREA)

Abstract

PURPOSE: To improve the distortion rate characteristic, by reducing the idling current of the SEPP circuit of the push-pull amplifier for no signal and by increasing this idling current for reproducing of a large sound volume.
CONSTITUTION: When signals do not come to input terminals 1a and 1b, no signals are supplied to input terminals 3a and 3b of bias setting circuit 3, and therefore, the idling current of approximately 50mA is flowed to transistors Q13 and Q14 and resistances R18 and R19 of SEPP circuit 2. Meanwhile, when high-level signals come to input terminals 3a and 3b, power is supplied to resistance R15 of bias circuit 2', and the idling current of approximately 200mA is flowed to transistors Q13 and Q14 and resistances R18 and R19.
COPYRIGHT: (C)1981,JPO&Japio
JP16559179A 1979-12-21 1979-12-21 Bias setting circuit of push-pull amplifier Pending JPS5689108A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16559179A JPS5689108A (en) 1979-12-21 1979-12-21 Bias setting circuit of push-pull amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16559179A JPS5689108A (en) 1979-12-21 1979-12-21 Bias setting circuit of push-pull amplifier

Publications (1)

Publication Number Publication Date
JPS5689108A true JPS5689108A (en) 1981-07-20

Family

ID=15815257

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16559179A Pending JPS5689108A (en) 1979-12-21 1979-12-21 Bias setting circuit of push-pull amplifier

Country Status (1)

Country Link
JP (1) JPS5689108A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5979613A (en) * 1982-09-24 1984-05-08 エツセジ−エツセ−アテイイ−エツセ・コンポネンテイ・エレツトロニ−チ・ソチエタ・ペル・アノニマ Power amplifier for amplifying audio
JPS59123302A (en) * 1982-12-29 1984-07-17 Seiko Epson Corp Low frequency amplifier circuit
JPS59156009A (en) * 1983-02-24 1984-09-05 Rohm Co Ltd Power amplifier
JPH01139614U (en) * 1988-03-16 1989-09-25

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5250654B2 (en) * 1973-11-05 1977-12-26

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5250654B2 (en) * 1973-11-05 1977-12-26

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5979613A (en) * 1982-09-24 1984-05-08 エツセジ−エツセ−アテイイ−エツセ・コンポネンテイ・エレツトロニ−チ・ソチエタ・ペル・アノニマ Power amplifier for amplifying audio
JPS59123302A (en) * 1982-12-29 1984-07-17 Seiko Epson Corp Low frequency amplifier circuit
JPS59156009A (en) * 1983-02-24 1984-09-05 Rohm Co Ltd Power amplifier
JPH01139614U (en) * 1988-03-16 1989-09-25

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