JPS5731213A - Electric power amplifier - Google Patents

Electric power amplifier

Info

Publication number
JPS5731213A
JPS5731213A JP10658480A JP10658480A JPS5731213A JP S5731213 A JPS5731213 A JP S5731213A JP 10658480 A JP10658480 A JP 10658480A JP 10658480 A JP10658480 A JP 10658480A JP S5731213 A JPS5731213 A JP S5731213A
Authority
JP
Japan
Prior art keywords
current
trq13
resistance
emitter
emitter areas
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
JP10658480A
Other languages
Japanese (ja)
Other versions
JPS647684B2 (en
Inventor
Koichi Tanaka
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP10658480A priority Critical patent/JPS5731213A/en
Publication of JPS5731213A publication Critical patent/JPS5731213A/en
Publication of JPS647684B2 publication Critical patent/JPS647684B2/ja
Granted 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 reduce the loss of voltage as well as the variance of the idling current, by putting a series circuit of a transistor (TR) and resistance which are connected via a diode between the base and the emitter of the 1st and 2nd output TRs. CONSTITUTION:The relation between a current I'3 flowing to a diode chain 7 and a current I'4 flowing to TRQ12 and TRQ14 is shown by the equation (1), where S10-S14 show the emitter areas of TRs Q10-Q14. The relation between idling currents I'5 and I'4 when R3=0 is satisfied is shown by the equation (2), where S13 and S16 show the emitter areas of TRQ13 and TRQ16 respectively. The voltage drop due to a resistance R3 is set at 1.5mV when no signal exists, and thus the current I'5 is virtually decided by the emitter areas of the TRQ13 and TRQ16 and does not depend largely on the current amplification factor. When the level of an input signal is high, both the TRQ13 and TRQ15 can be completely driven by the resistance R3.
JP10658480A 1980-08-01 1980-08-01 Electric power amplifier Granted JPS5731213A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10658480A JPS5731213A (en) 1980-08-01 1980-08-01 Electric power amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10658480A JPS5731213A (en) 1980-08-01 1980-08-01 Electric power amplifier

Publications (2)

Publication Number Publication Date
JPS5731213A true JPS5731213A (en) 1982-02-19
JPS647684B2 JPS647684B2 (en) 1989-02-09

Family

ID=14437248

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10658480A Granted JPS5731213A (en) 1980-08-01 1980-08-01 Electric power amplifier

Country Status (1)

Country Link
JP (1) JPS5731213A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58207706A (en) * 1982-05-28 1983-12-03 Hitachi Ltd Output amplifying circuit
JPS61247111A (en) * 1985-04-25 1986-11-04 Matsushita Electric Ind Co Ltd Amplifier circuit
JPS62133246U (en) * 1986-02-07 1987-08-22
JPH048525U (en) * 1990-05-10 1992-01-27
JP2005348581A (en) * 2004-06-07 2005-12-15 Sony Corp Load driving circuit

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5056851A (en) * 1973-09-17 1975-05-17
JPS5577168A (en) * 1978-12-06 1980-06-10 Toko Inc Semiconductor integrated circuit device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5056851A (en) * 1973-09-17 1975-05-17
JPS5577168A (en) * 1978-12-06 1980-06-10 Toko Inc Semiconductor integrated circuit device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58207706A (en) * 1982-05-28 1983-12-03 Hitachi Ltd Output amplifying circuit
JPS61247111A (en) * 1985-04-25 1986-11-04 Matsushita Electric Ind Co Ltd Amplifier circuit
JPS62133246U (en) * 1986-02-07 1987-08-22
JPH05982Y2 (en) * 1986-02-07 1993-01-12
JPH048525U (en) * 1990-05-10 1992-01-27
JP2005348581A (en) * 2004-06-07 2005-12-15 Sony Corp Load driving circuit
JP4654609B2 (en) * 2004-06-07 2011-03-23 ソニー株式会社 Load drive circuit

Also Published As

Publication number Publication date
JPS647684B2 (en) 1989-02-09

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