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JPS5599811A - Broad band balanced amplifier having gain selection function - Google Patents

Broad band balanced amplifier having gain selection function

Info

Publication number
JPS5599811A
JPS5599811A JP653979A JP653979A JPS5599811A JP S5599811 A JPS5599811 A JP S5599811A JP 653979 A JP653979 A JP 653979A JP 653979 A JP653979 A JP 653979A JP S5599811 A JPS5599811 A JP S5599811A
Authority
JP
Japan
Prior art keywords
resistors
gain selection
selection function
broad band
balanced amplifier
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
JP653979A
Other languages
Japanese (ja)
Other versions
JPS6056321B2 (en
Inventor
Toru Takahashi
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.)
Iwatsu Electric Co Ltd
Original Assignee
Iwatsu Electric 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 Iwatsu Electric Co Ltd filed Critical Iwatsu Electric Co Ltd
Priority to JP653979A priority Critical patent/JPS6056321B2/en
Publication of JPS5599811A publication Critical patent/JPS5599811A/en
Publication of JPS6056321B2 publication Critical patent/JPS6056321B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G1/00—Details of arrangements for controlling amplification
    • H03G1/04—Modifications of control circuit to reduce distortion caused by control

Landscapes

  • Control Of Amplification And Gain Control (AREA)
  • Amplifiers (AREA)

Abstract

PURPOSE:To reduce the change in the band width with gain selection, by constituting the feedback resistance between emitters of each stage as almost equal value, by means of the attenuation circuit network consisting of the output side resistors of the output amplifier. CONSTITUTION:The signal voltage fed to the terminal 1 is converted into current at the transistors Tr27, 28, and each output current of Tr27, 28 is attenuated at the resistors 56, 52, 54, 57, 53, 55 inserted to the collectors and fed to each emitter of Tr33, 34. The output current is converted into voltage with the resistors 25, 26 connected to the collector and outputted from the terminals 2, 3. In this case, the value of the feedback resistors 17, 18 is taken almost the same value with the attenuation circuit consisting of resistors connected to the collectors, allowing to reduce the change in the band width when the gain is selected.
JP653979A 1979-01-25 1979-01-25 Wideband balanced amplifier with gain switching function Expired JPS6056321B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP653979A JPS6056321B2 (en) 1979-01-25 1979-01-25 Wideband balanced amplifier with gain switching function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP653979A JPS6056321B2 (en) 1979-01-25 1979-01-25 Wideband balanced amplifier with gain switching function

Publications (2)

Publication Number Publication Date
JPS5599811A true JPS5599811A (en) 1980-07-30
JPS6056321B2 JPS6056321B2 (en) 1985-12-10

Family

ID=11641144

Family Applications (1)

Application Number Title Priority Date Filing Date
JP653979A Expired JPS6056321B2 (en) 1979-01-25 1979-01-25 Wideband balanced amplifier with gain switching function

Country Status (1)

Country Link
JP (1) JPS6056321B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62105507A (en) * 1985-11-01 1987-05-16 Iwatsu Electric Co Ltd differential amplifier

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62105507A (en) * 1985-11-01 1987-05-16 Iwatsu Electric Co Ltd differential amplifier
JPH0457242B2 (en) * 1985-11-01 1992-09-11 Iwatsu Electric Co Ltd

Also Published As

Publication number Publication date
JPS6056321B2 (en) 1985-12-10

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