JPS54125952A - Current amplifier - Google Patents

Current amplifier

Info

Publication number
JPS54125952A
JPS54125952A JP3293078A JP3293078A JPS54125952A JP S54125952 A JPS54125952 A JP S54125952A JP 3293078 A JP3293078 A JP 3293078A JP 3293078 A JP3293078 A JP 3293078A JP S54125952 A JPS54125952 A JP S54125952A
Authority
JP
Japan
Prior art keywords
base
constant current
current source
constitution
resistance
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
JP3293078A
Other languages
Japanese (ja)
Inventor
Shuichi Konno
Isao Namae
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.)
Victor Company of Japan Ltd
Original Assignee
Victor Company of Japan 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 Victor Company of Japan Ltd filed Critical Victor Company of Japan Ltd
Priority to JP3293078A priority Critical patent/JPS54125952A/en
Publication of JPS54125952A publication Critical patent/JPS54125952A/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
    • H03F3/34—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 ensure the driving with the low voltage and in a simple constitution by connecting both the constant current source and the resistance to the base of the transistor at the input side and then selecting the current quantity of the constant current source and the resistance value with a fixed current amplification factor so as to secure flowing of the output current. CONSTITUTION:Constant current source 4 is connected to the base of input-side transistor Tr1, and resistance R is connected to the connection between the base of output-side Tr2 and constant current source 1 and the base of Tr1. As a result, the potential difference is caused between the bases of Tr1 and Tr2 to feature the relation of (base potential e1 of Tr1)>(base potential e2 of Tr2). Then both the current quantity of source 4 and the value of R are selected properly so that the output current may flow with a fixed amplification factor. In this way, a simple and economical constitution can be obtained, and furthermore the driving can be secured with the lower voltage than conventional since a number of elements are not connected between the emitter of Tr1 and the earth.
JP3293078A 1978-03-24 1978-03-24 Current amplifier Pending JPS54125952A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3293078A JPS54125952A (en) 1978-03-24 1978-03-24 Current amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3293078A JPS54125952A (en) 1978-03-24 1978-03-24 Current amplifier

Publications (1)

Publication Number Publication Date
JPS54125952A true JPS54125952A (en) 1979-09-29

Family

ID=12372629

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3293078A Pending JPS54125952A (en) 1978-03-24 1978-03-24 Current amplifier

Country Status (1)

Country Link
JP (1) JPS54125952A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52124845A (en) * 1976-04-12 1977-10-20 Rca Corp Bias current attenuator

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52124845A (en) * 1976-04-12 1977-10-20 Rca Corp Bias current attenuator

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