JPS5637714A - Amplifier - Google Patents

Amplifier

Info

Publication number
JPS5637714A
JPS5637714A JP11376279A JP11376279A JPS5637714A JP S5637714 A JPS5637714 A JP S5637714A JP 11376279 A JP11376279 A JP 11376279A JP 11376279 A JP11376279 A JP 11376279A JP S5637714 A JPS5637714 A JP S5637714A
Authority
JP
Japan
Prior art keywords
transistors
output
secured
power supply
supply voltage
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
JP11376279A
Other languages
Japanese (ja)
Inventor
Kenji Yokoyama
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.)
Nippon Gakki Co Ltd
Original Assignee
Nippon Gakki 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 Nippon Gakki Co Ltd filed Critical Nippon Gakki Co Ltd
Priority to JP11376279A priority Critical patent/JPS5637714A/en
Publication of JPS5637714A publication Critical patent/JPS5637714A/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
    • H03F3/3066—Single-ended push-pull [SEPP] amplifiers; Phase-splitters therefor the collectors of complementary power transistors being connected to the output

Landscapes

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

Abstract

PURPOSE:To obtain an amplifier of a simpler push-pull structure having a high efficiency and no switching distortion, by providing the emitter-earthed push-pull output circuit, the bias setting circuit and the bias current control circuit. CONSTITUTION:The output voltage of the DC current sources 18 and 20 plus the resistance volues of the variable resistances 2 and 3 are set properly. And thus the normal B-class or the AB-class operation is secured for the output transistors 10 and 15 in the period during which each of the transistors swings in the forward direction, and the cut-off is prevented during the swing is secured in the cut-off direction. Thus an operation is secured with a smooth curve decided by the characteristics of the exponent function of the diodes 6 and 13 for the transistors. As a result, the similar efficiency to the conventional amplifier can be obtained along with the switching distortion reduced extremely. In addition, the output can be swung up to the power supply voltage since each of the transistors 10 and 15 is used in the emitter-earthed state. And at the same time, the power supply voltage of the driving stage has not to be set higher than the power supply voltage of the output circuit 28, thus increasing the using effieicency of the power source.
JP11376279A 1979-09-05 1979-09-05 Amplifier Pending JPS5637714A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11376279A JPS5637714A (en) 1979-09-05 1979-09-05 Amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11376279A JPS5637714A (en) 1979-09-05 1979-09-05 Amplifier

Publications (1)

Publication Number Publication Date
JPS5637714A true JPS5637714A (en) 1981-04-11

Family

ID=14620491

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11376279A Pending JPS5637714A (en) 1979-09-05 1979-09-05 Amplifier

Country Status (1)

Country Link
JP (1) JPS5637714A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0521758U (en) * 1991-09-03 1993-03-23 さやま商事株式会社 Waist cushion

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0521758U (en) * 1991-09-03 1993-03-23 さやま商事株式会社 Waist cushion

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