JPH045717U - - Google Patents

Info

Publication number
JPH045717U
JPH045717U JP4656690U JP4656690U JPH045717U JP H045717 U JPH045717 U JP H045717U JP 4656690 U JP4656690 U JP 4656690U JP 4656690 U JP4656690 U JP 4656690U JP H045717 U JPH045717 U JP H045717U
Authority
JP
Japan
Prior art keywords
variable attenuator
gate current
fet
fet amplifier
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.)
Pending
Application number
JP4656690U
Other languages
English (en)
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 filed Critical
Priority to JP4656690U priority Critical patent/JPH045717U/ja
Publication of JPH045717U publication Critical patent/JPH045717U/ja
Pending legal-status Critical Current

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  • Amplifiers (AREA)

Description

【図面の簡単な説明】
第1図はこの考案の一実施例の構成を示す回路
図。第2図乃至第5図は従来例の構成を示すブロ
ツク図。第6図はFETのゲート電圧−ゲート電
流特性図。 1……可変減衰器、2……FET増幅器、3…
…ゲート電流検出回路、4……可変減衰器制御回
路、10……FET、12及び13……整合回路
、14……3端子レギユレータ、D……ピンダ
イオード、Q〜Q……トランジスタ、Th…
…サーミスタ。

Claims (1)

    【実用新案登録請求の範囲】
  1. FET増幅器の入力信号を減衰させる可変減衰
    器と、FET増幅器のFETゲート電流を検出す
    るゲート電流検出回路と、検出ゲート電流に伴つ
    て可変減衰器の減衰率を制御する可変減衰器制御
    回路とを備えたことを特徴とするFET増幅器保
    護回路。
JP4656690U 1990-05-02 1990-05-02 Pending JPH045717U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4656690U JPH045717U (ja) 1990-05-02 1990-05-02

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4656690U JPH045717U (ja) 1990-05-02 1990-05-02

Publications (1)

Publication Number Publication Date
JPH045717U true JPH045717U (ja) 1992-01-20

Family

ID=31561758

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4656690U Pending JPH045717U (ja) 1990-05-02 1990-05-02

Country Status (1)

Country Link
JP (1) JPH045717U (ja)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62107505A (ja) * 1985-11-05 1987-05-18 Mitsubishi Electric Corp 過大入力保護fet増幅回路
JPS63128808A (ja) * 1986-10-29 1988-06-01 ゼネラル・エレクトリック・カンパニイ Fet電力増幅器の過駆動制御装置
JPS643208B2 (ja) * 1981-07-23 1989-01-20 Nippon Oil Co Ltd

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS643208B2 (ja) * 1981-07-23 1989-01-20 Nippon Oil Co Ltd
JPS62107505A (ja) * 1985-11-05 1987-05-18 Mitsubishi Electric Corp 過大入力保護fet増幅回路
JPS63128808A (ja) * 1986-10-29 1988-06-01 ゼネラル・エレクトリック・カンパニイ Fet電力増幅器の過駆動制御装置

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