JPS5468140A - Amplifying circuit - Google Patents

Amplifying circuit

Info

Publication number
JPS5468140A
JPS5468140A JP13548777A JP13548777A JPS5468140A JP S5468140 A JPS5468140 A JP S5468140A JP 13548777 A JP13548777 A JP 13548777A JP 13548777 A JP13548777 A JP 13548777A JP S5468140 A JPS5468140 A JP S5468140A
Authority
JP
Japan
Prior art keywords
trt1
circuit
voltage
stable
constituted
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
JP13548777A
Other languages
Japanese (ja)
Other versions
JPS5651532B2 (en
Inventor
Kenichi Hasegawa
Norio Meki
Mitsuo Chiba
Seiichi Hashimoto
Fumiaki Araki
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP13548777A priority Critical patent/JPS5468140A/en
Publication of JPS5468140A publication Critical patent/JPS5468140A/en
Publication of JPS5651532B2 publication Critical patent/JPS5651532B2/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
    • H03F3/34—DC amplifiers in which all stages are DC-coupled
    • H03F3/343—DC amplifiers in which all stages are DC-coupled with semiconductor devices only

Landscapes

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

Abstract

PURPOSE:To make stable the output DC voltage of the preamplifier and to obtain the circuit easy for circuit integration, by using the differential amplifying circuit and giving the bias voltage stably to the first stage transistor. CONSTITUTION:Transistor TrT1 is connected to the differential amplifying circuit constituted with TrT2 and T3, and the bias voltage is fed with the resistor R3. Further, the input VIN is amplified with TrT1 and is further amplified with the differential amplifier constituted with TrT4 and T5 and output Vout is made via TrT6. In the amplifier thus constituted, the bias voltage of TrT1 is always stable, and the collector voltage is almost equal to the stable voltage E1 independently of the dispersion of amplification factor and it is stable even with the amplification factor varied. Accordingly, the output of TrT1 is connectable for DC coupling to the next stage, then circuit integration is made easy. Further, the differential amplification circuit consisting of TrT4 and T5 can be operated in the condition of linear operation independently of the variation of the amplification factor of TrT1.
JP13548777A 1977-11-10 1977-11-10 Amplifying circuit Granted JPS5468140A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13548777A JPS5468140A (en) 1977-11-10 1977-11-10 Amplifying circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13548777A JPS5468140A (en) 1977-11-10 1977-11-10 Amplifying circuit

Publications (2)

Publication Number Publication Date
JPS5468140A true JPS5468140A (en) 1979-06-01
JPS5651532B2 JPS5651532B2 (en) 1981-12-05

Family

ID=15152865

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13548777A Granted JPS5468140A (en) 1977-11-10 1977-11-10 Amplifying circuit

Country Status (1)

Country Link
JP (1) JPS5468140A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57191109U (en) * 1981-05-28 1982-12-03
JPS59176910A (en) * 1983-03-26 1984-10-06 Nec Corp Amplifying circuit
JPS60167505A (en) * 1985-01-14 1985-08-30 Toshiba Corp Temperature compensation type amplifier

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57191109U (en) * 1981-05-28 1982-12-03
JPH0332094Y2 (en) * 1981-05-28 1991-07-08
JPS59176910A (en) * 1983-03-26 1984-10-06 Nec Corp Amplifying circuit
JPH0363847B2 (en) * 1983-03-26 1991-10-02 Nippon Electric Co
JPS60167505A (en) * 1985-01-14 1985-08-30 Toshiba Corp Temperature compensation type amplifier

Also Published As

Publication number Publication date
JPS5651532B2 (en) 1981-12-05

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