JPS5624811A - Output amplifying circuit - Google Patents

Output amplifying circuit

Info

Publication number
JPS5624811A
JPS5624811A JP10058179A JP10058179A JPS5624811A JP S5624811 A JPS5624811 A JP S5624811A JP 10058179 A JP10058179 A JP 10058179A JP 10058179 A JP10058179 A JP 10058179A JP S5624811 A JPS5624811 A JP S5624811A
Authority
JP
Japan
Prior art keywords
current
vout
idc
resistor
idling
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
JP10058179A
Other languages
Japanese (ja)
Inventor
Kazuhiko Kamimura
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP10058179A priority Critical patent/JPS5624811A/en
Publication of JPS5624811A publication Critical patent/JPS5624811A/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
    • H03F3/3071—Single-ended push-pull [SEPP] amplifiers; Phase-splitters therefor the emitters 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 eliminate idling distortion by eliminating the cut-off state of an output transistor by adjusting the idling current and power-feed retaining current of the output transistor by a resistor. CONSTITUTION:A voltage developed at the connection point between resistors 20 and 21 with no load is set to Vout=OV and idling current IDC flowing through output transistors (TR) 17 and 19 is adjusted by variable resistor 14. Next, resistor 14 is so adjusted that when Vout is not more than -1V, current Ia flowing through TR17 is IDC+Ialpha (Ialpha is conduction retaining current of TR17, 19), and resistor 45 is so adjusted that when Vout is not less than IV, electric current Ib flowing through TR19 is IDC+Ialpha. When Vout is OV, idling current IDC flows through TR17, 19. As Vout exceeds base-emitter voltage VBE of TR35, 36, TR17, 19 stay conductive.
JP10058179A 1979-08-07 1979-08-07 Output amplifying circuit Pending JPS5624811A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10058179A JPS5624811A (en) 1979-08-07 1979-08-07 Output amplifying circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10058179A JPS5624811A (en) 1979-08-07 1979-08-07 Output amplifying circuit

Publications (1)

Publication Number Publication Date
JPS5624811A true JPS5624811A (en) 1981-03-10

Family

ID=14277847

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10058179A Pending JPS5624811A (en) 1979-08-07 1979-08-07 Output amplifying circuit

Country Status (1)

Country Link
JP (1) JPS5624811A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6439918U (en) * 1987-09-07 1989-03-09

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5441055A (en) * 1977-09-07 1979-03-31 Pioneer Electronic Corp Pushhpull amplifier

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5441055A (en) * 1977-09-07 1979-03-31 Pioneer Electronic Corp Pushhpull amplifier

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6439918U (en) * 1987-09-07 1989-03-09

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