JPS54130855A - Amplifier circuit - Google Patents

Amplifier circuit

Info

Publication number
JPS54130855A
JPS54130855A JP3903278A JP3903278A JPS54130855A JP S54130855 A JPS54130855 A JP S54130855A JP 3903278 A JP3903278 A JP 3903278A JP 3903278 A JP3903278 A JP 3903278A JP S54130855 A JPS54130855 A JP S54130855A
Authority
JP
Japan
Prior art keywords
voltage
transistor
power source
lowering
reduced
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
JP3903278A
Other languages
Japanese (ja)
Inventor
Yoshio Murayama
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP3903278A priority Critical patent/JPS54130855A/en
Publication of JPS54130855A publication Critical patent/JPS54130855A/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
    • H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback

Landscapes

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

Abstract

PURPOSE:To prevent distortion generation by reducing the emitter current of the final-stage transistor according to the lowering of the power source voltage and lowering the DC output voltage to prevent the clip of the output waveform. CONSTITUTION:When the value of resistance 19 is so set that it may be twice as large as the value of resistance 17, DC output voltage VO1 is the half of power source voltage VCC1, and output signal Vout is increased or reduced at the center of DC voltage 1/2 VCC1. When power source voltage VCC is lowered and becomes VCC2, the base voltage of transistor 21 is lowered according to this lowering, and the collector current of transistor 21, namely, the emitter current of transistor 16 is reduced. Consequently, the drop voltage in load resistance 17 is reduced, and DC output voltage VO2 becomes 1/2 VCC2 also. Thus, input signal Vin is prevented from being clipped because the operation point of transistor 16 always becomes a point of the half of the power source voltage.
JP3903278A 1978-04-03 1978-04-03 Amplifier circuit Pending JPS54130855A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3903278A JPS54130855A (en) 1978-04-03 1978-04-03 Amplifier circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3903278A JPS54130855A (en) 1978-04-03 1978-04-03 Amplifier circuit

Publications (1)

Publication Number Publication Date
JPS54130855A true JPS54130855A (en) 1979-10-11

Family

ID=12541759

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3903278A Pending JPS54130855A (en) 1978-04-03 1978-04-03 Amplifier circuit

Country Status (1)

Country Link
JP (1) JPS54130855A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5698911A (en) * 1980-01-09 1981-08-08 Rohm Co Ltd Amplifier

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5698911A (en) * 1980-01-09 1981-08-08 Rohm Co Ltd Amplifier

Similar Documents

Publication Publication Date Title
TW200511700A (en) Switching power supply
EP0391055A3 (en) Output stage for an operational amplifier
JPS54130855A (en) Amplifier circuit
JPS5680906A (en) Acoustic power amplifier
JPS5592006A (en) Amplifier
JPS5643808A (en) Signal converting circuit
JPS5718106A (en) Direct-coupled amplifying circuit
JPS5642409A (en) Output amplifying circuit
JPS5731213A (en) Electric power amplifier
RU8544U1 (en) TWO-POWER POWER AMPLIFIER
JPS5620315A (en) Low-frequency amplifying circuit
JPS568912A (en) Gain control circuit
JPS55138905A (en) Bias circuit of amplifier
SU1550597A1 (en) High frequency generator
SU970638A1 (en) Operational amplifier
SU644025A1 (en) Amplifier
RU1781814C (en) Amplifier
SU1145474A1 (en) Transistor switch
JPS6449308A (en) Peak clipping circuit
TW361009B (en) Variable gain amplifier circuit
SU1138922A1 (en) Differential amplifier
SU1352616A1 (en) Push-pull power amplifier
KR950008185Y1 (en) Power supplying circuit
SU1608781A1 (en) Amplifier
JPS5616311A (en) Transistor circuit