JPS5481761A - Push pull amplifier circuit - Google Patents

Push pull amplifier circuit

Info

Publication number
JPS5481761A
JPS5481761A JP14976177A JP14976177A JPS5481761A JP S5481761 A JPS5481761 A JP S5481761A JP 14976177 A JP14976177 A JP 14976177A JP 14976177 A JP14976177 A JP 14976177A JP S5481761 A JPS5481761 A JP S5481761A
Authority
JP
Japan
Prior art keywords
power supply
bias
fed
increased
circuit
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
JP14976177A
Other languages
Japanese (ja)
Inventor
Yoshimi Ohashi
Kiyoshi Sawairi
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP14976177A priority Critical patent/JPS5481761A/en
Publication of JPS5481761A publication Critical patent/JPS5481761A/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
    • H03F3/26—Push-pull amplifiers; Phase-splitters therefor

Landscapes

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

Abstract

PURPOSE:To reduce the power consumption and to increase the power supply efficiency, by directly connecting the bias element at the collector potential side of the push pull transistor, and by connecting the bias element at the emitter potential to the intermediate point of the input transformer. CONSTITUTION:The positive power supply is added to the terminal 1 constituting the circuit and the minus power supply is fed to the terminal 2 respectively, and the bias of the circuit is determined with the resistors R2, R3 and diode D1. Further, the signal from the preamplifier AMP is fed to the circuit via the input transformer T1, operating the speaker SP and the collector current and the base current of transistors Q1 and Q2 are increased. However, since the bias resistrors R2 and R3 are directly connected to the base, useless voltage drop is not caused even with the base current increased and the amplification operation is made stable. Accordingly, the bias voltage fed to transistor can be lowered and the power supply efficiency is increased.
JP14976177A 1977-12-12 1977-12-12 Push pull amplifier circuit Pending JPS5481761A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14976177A JPS5481761A (en) 1977-12-12 1977-12-12 Push pull amplifier circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14976177A JPS5481761A (en) 1977-12-12 1977-12-12 Push pull amplifier circuit

Publications (1)

Publication Number Publication Date
JPS5481761A true JPS5481761A (en) 1979-06-29

Family

ID=15482157

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14976177A Pending JPS5481761A (en) 1977-12-12 1977-12-12 Push pull amplifier circuit

Country Status (1)

Country Link
JP (1) JPS5481761A (en)

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