JPS55137708A - Push-pull amplifying circuit - Google Patents

Push-pull amplifying circuit

Info

Publication number
JPS55137708A
JPS55137708A JP4616379A JP4616379A JPS55137708A JP S55137708 A JPS55137708 A JP S55137708A JP 4616379 A JP4616379 A JP 4616379A JP 4616379 A JP4616379 A JP 4616379A JP S55137708 A JPS55137708 A JP S55137708A
Authority
JP
Japan
Prior art keywords
resistances
bias
cut
input signal
base
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
JP4616379A
Other languages
Japanese (ja)
Other versions
JPS6049368B2 (en
Inventor
Kazumasa Sakai
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.)
TRIO KENWOOD CORP
Kenwood KK
Original Assignee
TRIO KENWOOD CORP
Kenwood KK
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 TRIO KENWOOD CORP, Kenwood KK filed Critical TRIO KENWOOD CORP
Priority to JP4616379A priority Critical patent/JPS6049368B2/en
Publication of JPS55137708A publication Critical patent/JPS55137708A/en
Publication of JPS6049368B2 publication Critical patent/JPS6049368B2/en
Expired 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
    • H03F3/3066—Single-ended push-pull [SEPP] amplifiers; Phase-splitters therefor the collectors of complementary power transistors being connected to the output
    • H03F3/3067—Single-ended push-pull [SEPP] amplifiers; Phase-splitters therefor the collectors of complementary power transistors being connected to the output with asymmetrical driving of the end stage

Landscapes

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

Abstract

PURPOSE:To prevent switching distortion from being generated, by providing a current path for bias between the base of the output transistor of a push-pull PP amplifier, which is constituted by symmetrical circuits, and the earth or the power source. CONSTITUTION:In symmetrical PP amplifying circuit of inverted Darlington connection, resistances 17 and 18 are provided between the base of output transistors 1 and 2 and the earth, and resistances 7 and 8 are provided between the base and the power source. The bias circuit is adjusted for the class B amplification and is so adjusted that a proper DC bias current may be flowed to Tr1, 2 when no input signal exist. In case of a positive input signal voltage, a current is supplied to load 11 from Tr3 and Tr1. At this time, driving Tr4 is cut off, however, the bias current is flowed to Tr2 by resistances 7 and 17 to prevent Tr2 from being a cutoff state. Similarly, in case of a negative input signal, Tr3 is cut off, however, Tr1 is not cut off due to resistances 8 and 18. Consequently, this circuit functions as a PP amplifier of the class AB, and switching distortion can be prevented, so that the distortion rate can be lowered.
JP4616379A 1979-04-16 1979-04-16 push-pull amplifier circuit Expired JPS6049368B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4616379A JPS6049368B2 (en) 1979-04-16 1979-04-16 push-pull amplifier circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4616379A JPS6049368B2 (en) 1979-04-16 1979-04-16 push-pull amplifier circuit

Publications (2)

Publication Number Publication Date
JPS55137708A true JPS55137708A (en) 1980-10-27
JPS6049368B2 JPS6049368B2 (en) 1985-11-01

Family

ID=12739338

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4616379A Expired JPS6049368B2 (en) 1979-04-16 1979-04-16 push-pull amplifier circuit

Country Status (1)

Country Link
JP (1) JPS6049368B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5753113A (en) * 1980-09-17 1982-03-30 Pioneer Electronic Corp Push-pull amplifier
EP0287914A2 (en) * 1987-04-21 1988-10-26 STMicroelectronics S.r.l. Integratable class AB output stage for low-frequency amplifiers

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5753113A (en) * 1980-09-17 1982-03-30 Pioneer Electronic Corp Push-pull amplifier
JPH0127601B2 (en) * 1980-09-17 1989-05-30 Pioneer Electronic Corp
EP0287914A2 (en) * 1987-04-21 1988-10-26 STMicroelectronics S.r.l. Integratable class AB output stage for low-frequency amplifiers

Also Published As

Publication number Publication date
JPS6049368B2 (en) 1985-11-01

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