JPS5623006A - Output circuit of fm intermediate frequency amplification - Google Patents

Output circuit of fm intermediate frequency amplification

Info

Publication number
JPS5623006A
JPS5623006A JP9728379A JP9728379A JPS5623006A JP S5623006 A JPS5623006 A JP S5623006A JP 9728379 A JP9728379 A JP 9728379A JP 9728379 A JP9728379 A JP 9728379A JP S5623006 A JPS5623006 A JP S5623006A
Authority
JP
Japan
Prior art keywords
circuit
intermediate frequency
trq1
constant current
output
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
JP9728379A
Other languages
Japanese (ja)
Inventor
Kazuo Watanabe
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP9728379A priority Critical patent/JPS5623006A/en
Publication of JPS5623006A publication Critical patent/JPS5623006A/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
    • H03F3/189—High-frequency amplifiers, e.g. radio frequency amplifiers
    • H03F3/19—High-frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only

Landscapes

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

Abstract

PURPOSE:To reject AMR, by providing the constant current circuit to the input transistor of the emitter follower circuit of Darlington connection in the FM intermediate frequency amplifier output circuit, to increase the current set at input side. CONSTITUTION:The circuit consisting of differential transistors (TR) Q5, Q6 and the emitter constant current circuit is the final stage amplifying circuit in the FM intermediate frequency amplifying circuit having the limiter function, the inverted phase output is fed to the TRQ1, Q2 and Q3, Q4 in Darlington connection, and the output is fed to the FM detection circuit DET. The emitters of the TRQ1, Q3 are respectively provided with the constant current circuit I1, allowing to supply a given current to the TRQ1, Q3 independently of the DC voltage of the output signal, and the current set greater can improve the AMR (Amplitude Modulation Rejection).
JP9728379A 1979-08-01 1979-08-01 Output circuit of fm intermediate frequency amplification Pending JPS5623006A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9728379A JPS5623006A (en) 1979-08-01 1979-08-01 Output circuit of fm intermediate frequency amplification

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9728379A JPS5623006A (en) 1979-08-01 1979-08-01 Output circuit of fm intermediate frequency amplification

Publications (1)

Publication Number Publication Date
JPS5623006A true JPS5623006A (en) 1981-03-04

Family

ID=14188176

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9728379A Pending JPS5623006A (en) 1979-08-01 1979-08-01 Output circuit of fm intermediate frequency amplification

Country Status (1)

Country Link
JP (1) JPS5623006A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60173210A (en) * 1984-02-17 1985-09-06 Shigeto Kumagai Drainage device for ground and the like

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60173210A (en) * 1984-02-17 1985-09-06 Shigeto Kumagai Drainage device for ground and the like
JPH0447724B2 (en) * 1984-02-17 1992-08-04 Niki Paionia Kk

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