JPS56160110A - Amplifying circuit - Google Patents

Amplifying circuit

Info

Publication number
JPS56160110A
JPS56160110A JP6339980A JP6339980A JPS56160110A JP S56160110 A JPS56160110 A JP S56160110A JP 6339980 A JP6339980 A JP 6339980A JP 6339980 A JP6339980 A JP 6339980A JP S56160110 A JPS56160110 A JP S56160110A
Authority
JP
Japan
Prior art keywords
negative impedance
nonreverse
constitution
output terminal
circuit
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
JP6339980A
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 JP6339980A priority Critical patent/JPS56160110A/en
Publication of JPS56160110A publication Critical patent/JPS56160110A/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
    • H03F1/26—Modifications of amplifiers to reduce influence of noise generated by amplifying elements

Abstract

PURPOSE:To reduce the occurrence of noise, by connecting a negative impedance between the input terminals to which a signal source is connected. CONSTITUTION:For a negative impedance circuit 4, the nonreverse and reverse inputs of an operational amplifier 5 are connected to the output terminal (b) and the output terminal (b') via a resistance RX respectively. The output of the amplifier 5 is fed back to the nonreverse and reverse inputs via feedback resistances R3 and R4 having an equal resistance value. The circuit 4 functions as a whole as a negative impedance -RX. In this case, to increase the dynamic range, the value is advantageously reduced for both the resistances R3 and R4. In such constitution, only the signal source impedance RS is put into the signal route as a noise source. As a result, the S/N can be improved.
JP6339980A 1980-05-15 1980-05-15 Amplifying circuit Pending JPS56160110A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6339980A JPS56160110A (en) 1980-05-15 1980-05-15 Amplifying circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6339980A JPS56160110A (en) 1980-05-15 1980-05-15 Amplifying circuit

Publications (1)

Publication Number Publication Date
JPS56160110A true JPS56160110A (en) 1981-12-09

Family

ID=13228180

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6339980A Pending JPS56160110A (en) 1980-05-15 1980-05-15 Amplifying circuit

Country Status (1)

Country Link
JP (1) JPS56160110A (en)

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