JPS5537072A - Semiconductor amplifier circuit device - Google Patents

Semiconductor amplifier circuit device

Info

Publication number
JPS5537072A
JPS5537072A JP11043878A JP11043878A JPS5537072A JP S5537072 A JPS5537072 A JP S5537072A JP 11043878 A JP11043878 A JP 11043878A JP 11043878 A JP11043878 A JP 11043878A JP S5537072 A JPS5537072 A JP S5537072A
Authority
JP
Japan
Prior art keywords
circuit
output
trq13
emitter
current
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
JP11043878A
Other languages
Japanese (ja)
Other versions
JPS6155804B2 (en
Inventor
Ryuichi Kioka
Masanobu Shinoda
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
NEC Engineering Ltd
Original Assignee
NEC Corp
NEC Engineering Ltd
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, NEC Engineering Ltd, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP11043878A priority Critical patent/JPS5537072A/en
Publication of JPS5537072A publication Critical patent/JPS5537072A/en
Publication of JPS6155804B2 publication Critical patent/JPS6155804B2/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

Abstract

PURPOSE:To prevent the deterioration of the distortion factor for the output signal in case the current amplification factors differ for the transistors Tr by securing the same value with use of the operational amplifier for the emitter current of the Tr's used in the complementary SEPP output circuit. CONSTITUTION:The output of differential amplifier 200 consisting of transistors TrQ8 and Q9 constituting the input step is applied to TrQ13 and Q14 which form the complementary SEPP circuit. And the output of this circuit is supplied to load 10. Then the bias circuit comprising TrQ12, diodes D5-D8 and others plus the feedback circuit consisting of resistances 18 and 19 plus capacitor C4 are installed to the SEPP circuit. Furthermore, operational amplifier 50 which secures the same value to the emitter current of TrQ13 and Q14 via the difference between the emitter potential of Q14 and the cathode potential of diode D7 is provided, along with Tr15 featuring the same structure as Q14. Thus in case the current amplification factors are different between TrQ13 and Q14, the emitter current is made equal between Q13 and Q14 in order to prevent the deterioration of the distortion factor for the output signal.
JP11043878A 1978-09-07 1978-09-07 Semiconductor amplifier circuit device Granted JPS5537072A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11043878A JPS5537072A (en) 1978-09-07 1978-09-07 Semiconductor amplifier circuit device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11043878A JPS5537072A (en) 1978-09-07 1978-09-07 Semiconductor amplifier circuit device

Publications (2)

Publication Number Publication Date
JPS5537072A true JPS5537072A (en) 1980-03-14
JPS6155804B2 JPS6155804B2 (en) 1986-11-29

Family

ID=14535720

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11043878A Granted JPS5537072A (en) 1978-09-07 1978-09-07 Semiconductor amplifier circuit device

Country Status (1)

Country Link
JP (1) JPS5537072A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59182599A (en) * 1983-03-30 1984-10-17 インタ−ナシヨナル　ビジネス　マシ−ンズ　コ−ポレ−シヨン Electronic component assembly

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59182599A (en) * 1983-03-30 1984-10-17 インタ−ナシヨナル　ビジネス　マシ−ンズ　コ−ポレ−シヨン Electronic component assembly
JPH0475678B2 (en) * 1983-03-30 1992-12-01 Intaanashonaru Bijinesu Mashiinzu Corp

Also Published As

Publication number Publication date
JPS6155804B2 (en) 1986-11-29

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