JPS568909A - Amplifier - Google Patents

Amplifier

Info

Publication number
JPS568909A
JPS568909A JP8539179A JP8539179A JPS568909A JP S568909 A JPS568909 A JP S568909A JP 8539179 A JP8539179 A JP 8539179A JP 8539179 A JP8539179 A JP 8539179A JP S568909 A JPS568909 A JP S568909A
Authority
JP
Japan
Prior art keywords
gain
frequency
signal
impedance
capacitor
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
JP8539179A
Other languages
Japanese (ja)
Inventor
Yamato Okashin
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP8539179A priority Critical patent/JPS568909A/en
Publication of JPS568909A publication Critical patent/JPS568909A/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
    • H03F1/42—Modifications of amplifiers to extend the bandwidth
    • H03F1/48—Modifications of amplifiers to extend the bandwidth of aperiodic amplifiers

Landscapes

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

Abstract

PURPOSE:To reduce the consumption of electric current by increasing and widening a gain and band width per stage of an amplifier respectively. CONSTITUTION:Since the impedance of capacitor C3 is great as a signal is low in frequency, transistors TRQ3 and Q4 operate as a current Miller circuit and overall gain G3 in this case is equal to G1+6dB providing that G1 is the gain of differential amplifier A1 itself. On the other hand, when the frequency of the signal is high, TRQ4 functions as common emitter one because the impedance of capacitor C3 can be ignored. Therefore, overall gain G4 in this case is 2G1+6dB and even when gain G1 of differential amplifier A1 decrease according to a rise in the frequency of the signal,gain G4 never decreases on the whole, so that a broad band and high gain can be obtained.
JP8539179A 1979-07-04 1979-07-04 Amplifier Pending JPS568909A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8539179A JPS568909A (en) 1979-07-04 1979-07-04 Amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8539179A JPS568909A (en) 1979-07-04 1979-07-04 Amplifier

Publications (1)

Publication Number Publication Date
JPS568909A true JPS568909A (en) 1981-01-29

Family

ID=13857452

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8539179A Pending JPS568909A (en) 1979-07-04 1979-07-04 Amplifier

Country Status (1)

Country Link
JP (1) JPS568909A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5871219U (en) * 1981-11-09 1983-05-14 日本コロムビア株式会社 amplifier circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5871219U (en) * 1981-11-09 1983-05-14 日本コロムビア株式会社 amplifier circuit

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