JPS5779718A - Negative feedback amplifier - Google Patents

Negative feedback amplifier

Info

Publication number
JPS5779718A
JPS5779718A JP15487380A JP15487380A JPS5779718A JP S5779718 A JPS5779718 A JP S5779718A JP 15487380 A JP15487380 A JP 15487380A JP 15487380 A JP15487380 A JP 15487380A JP S5779718 A JPS5779718 A JP S5779718A
Authority
JP
Japan
Prior art keywords
input signal
amplifier
negative feedback
capacitor
high frequencies
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
JP15487380A
Other languages
Japanese (ja)
Other versions
JPS6339163B2 (en
Inventor
Nobuo Fujiwara
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
Nippon Victor KK
Original Assignee
Victor Company of Japan Ltd
Nippon Victor KK
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, Nippon Victor KK filed Critical Victor Company of Japan Ltd
Priority to JP15487380A priority Critical patent/JPS5779718A/en
Publication of JPS5779718A publication Critical patent/JPS5779718A/en
Publication of JPS6339163B2 publication Critical patent/JPS6339163B2/ja
Granted 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 increase the through-rate and distortion factor at high frequencies, by giving an input signal to a terminal at ground side of a capacitor for phase margin via a buffer amplifier. CONSTITUTION:An input signal is amplified at basic amplifiers 1, 2, a gain for impedance conversion is outputted via a buffer amplifier 3 of 0dB, negative feedback is made with an impedance Z2 and the characterisitcs such as RIAA are satisfied. On the other hand, the input signal is converted into a low impedance at a buffer amplifier 8 of gain 0dB and an input to the buffer amplifer 3 is given via a capacitor C1 for phase margin. As input signals go to high frequencies, the closed loop gain of a negative feedback amplifier is at 0dB and since the output signal of the basic amplifier 2 and the input signal are at the same potential, the deterioration of the through-rate at high frequencies can be avoided by the capacitor C1.
JP15487380A 1980-11-04 1980-11-04 Negative feedback amplifier Granted JPS5779718A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15487380A JPS5779718A (en) 1980-11-04 1980-11-04 Negative feedback amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15487380A JPS5779718A (en) 1980-11-04 1980-11-04 Negative feedback amplifier

Publications (2)

Publication Number Publication Date
JPS5779718A true JPS5779718A (en) 1982-05-19
JPS6339163B2 JPS6339163B2 (en) 1988-08-03

Family

ID=15593789

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15487380A Granted JPS5779718A (en) 1980-11-04 1980-11-04 Negative feedback amplifier

Country Status (1)

Country Link
JP (1) JPS5779718A (en)

Also Published As

Publication number Publication date
JPS6339163B2 (en) 1988-08-03

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