JPS5683105A - Complementary push-pull circuit - Google Patents

Complementary push-pull circuit

Info

Publication number
JPS5683105A
JPS5683105A JP15990779A JP15990779A JPS5683105A JP S5683105 A JPS5683105 A JP S5683105A JP 15990779 A JP15990779 A JP 15990779A JP 15990779 A JP15990779 A JP 15990779A JP S5683105 A JPS5683105 A JP S5683105A
Authority
JP
Japan
Prior art keywords
power supply
current
output stage
constant current
output
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
JP15990779A
Other languages
Japanese (ja)
Inventor
Yasuto Goto
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 JP15990779A priority Critical patent/JPS5683105A/en
Publication of JPS5683105A publication Critical patent/JPS5683105A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/30—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters
    • H03F1/307—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters in push-pull amplifiers

Landscapes

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

Abstract

PURPOSE:To suppress the variance of operating point due to power supply fluctuation, by providing a constant current transistor having the series resistor of emitter to the collecting circuit of a transistor of the output stage of upper and lower sides. CONSTITUTION:In comparison with conventional complementary push-pull circuits, to the collector circuit of transistors (TR) 15, 25 of the upper and lower output stages, PNP TR18 and NPN TR28 having emitter series resistors 19, 20 and of constant current type, are respectively inserted. If the power supply voltage VS increases and the current flowing to TR15 at the output stage is increased, the current of TR18 inserted to the collecting circuit of TR15 is decreased to return the state to original condition. Similarly, it can be applied to TR28 at the lower side. Thus, the collector current of the output stage TRs 15, 25 is made constant against voltage variance. Thus, the output voltage withstands the variation of the power supply voltage strongly through strong constant current operation.
JP15990779A 1979-12-10 1979-12-10 Complementary push-pull circuit Pending JPS5683105A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15990779A JPS5683105A (en) 1979-12-10 1979-12-10 Complementary push-pull circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15990779A JPS5683105A (en) 1979-12-10 1979-12-10 Complementary push-pull circuit

Publications (1)

Publication Number Publication Date
JPS5683105A true JPS5683105A (en) 1981-07-07

Family

ID=15703766

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15990779A Pending JPS5683105A (en) 1979-12-10 1979-12-10 Complementary push-pull circuit

Country Status (1)

Country Link
JP (1) JPS5683105A (en)

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