JPS56138309A - Amplifier - Google Patents

Amplifier

Info

Publication number
JPS56138309A
JPS56138309A JP4156080A JP4156080A JPS56138309A JP S56138309 A JPS56138309 A JP S56138309A JP 4156080 A JP4156080 A JP 4156080A JP 4156080 A JP4156080 A JP 4156080A JP S56138309 A JPS56138309 A JP S56138309A
Authority
JP
Japan
Prior art keywords
trs
signal
idle current
stage
fed
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
JP4156080A
Other languages
Japanese (ja)
Inventor
Hideki Sakano
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 JP4156080A priority Critical patent/JPS56138309A/en
Publication of JPS56138309A publication Critical patent/JPS56138309A/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
    • H03F3/3069—Single-ended push-pull [SEPP] amplifiers; Phase-splitters therefor the emitters of complementary power transistors being connected to the output
    • H03F3/3076—Single-ended push-pull [SEPP] amplifiers; Phase-splitters therefor the emitters of complementary power transistors being connected to the output with symmetrical driving of the end stage
    • H03F3/3077—Single-ended push-pull [SEPP] amplifiers; Phase-splitters therefor the emitters of complementary power transistors being connected to the output with symmetrical driving of the end stage using Darlington transistors

Landscapes

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

Abstract

PURPOSE:To suppress the production of distortion and to reproduce stable audio signal at all times, by driving and controlling each transistor at the final stage through stable idle current. CONSTITUTION:After the signal from the input terminal IN is fed to the input stage 22 and amplified, it is fed to the driving stage 24 and output signal is outputted from the transistor (TR)Q24. The output from this driving stage 24 is inputted to TRs 27, 28 for idle current. After amplifying the signal with TRs 27, 28, it is fed to the speaker 36 via TRs 31, 32 at the final stage. The amplifier with this constitution is provided with TRs 27, 28 in emitter follower connection which supplies the auxiliary idle current with greater input signal, and diodes D6, D16 constituting a pair of auxiliary idle current supply circuits 32a, 32b. The base potential of TRs 27, 28, is shifted with a pair of diodes D7-D9 and D10-D12, and TRs 29, 30, to negative side when the input signal is positive, and to positive side when the input signal is negative, allowing to output stable audio signal at all times.
JP4156080A 1980-03-31 1980-03-31 Amplifier Pending JPS56138309A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4156080A JPS56138309A (en) 1980-03-31 1980-03-31 Amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4156080A JPS56138309A (en) 1980-03-31 1980-03-31 Amplifier

Publications (1)

Publication Number Publication Date
JPS56138309A true JPS56138309A (en) 1981-10-28

Family

ID=12611812

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4156080A Pending JPS56138309A (en) 1980-03-31 1980-03-31 Amplifier

Country Status (1)

Country Link
JP (1) JPS56138309A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54114068A (en) * 1978-02-24 1979-09-05 Pioneer Electronic Corp Low frequency amplifier

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54114068A (en) * 1978-02-24 1979-09-05 Pioneer Electronic Corp Low frequency amplifier

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