JPS6170420U - - Google Patents

Info

Publication number
JPS6170420U
JPS6170420U JP1984155498U JP15549884U JPS6170420U JP S6170420 U JPS6170420 U JP S6170420U JP 1984155498 U JP1984155498 U JP 1984155498U JP 15549884 U JP15549884 U JP 15549884U JP S6170420 U JPS6170420 U JP S6170420U
Authority
JP
Japan
Prior art keywords
operational amplifier
circuit
input terminal
voltage
feedback loop
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
JP1984155498U
Other languages
English (en)
Other versions
JPH0241934Y2 (ja
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 JP1984155498U priority Critical patent/JPH0241934Y2/ja
Priority to DE19853536590 priority patent/DE3536590A1/de
Priority to US06/787,822 priority patent/US4633189A/en
Publication of JPS6170420U publication Critical patent/JPS6170420U/ja
Application granted granted Critical
Publication of JPH0241934Y2 publication Critical patent/JPH0241934Y2/ja
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G5/00—Tone control or bandwidth control in amplifiers
    • H03G5/02—Manually-operated control
    • H03G5/04—Manually-operated control in untuned amplifiers
    • H03G5/10—Manually-operated control in untuned amplifiers having semiconductor devices
    • H03G5/12—Manually-operated control in untuned amplifiers having semiconductor devices incorporating negative feedback

Landscapes

  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Amplifiers (AREA)

Description

【図面の簡単な説明】
第１図は従来例を示す回路図、第２図は第１図
の等価回路を示す回路図、第３図は本考案の一実
施例を示す回路図、第４図は第３図の等価回路を
示す回路図、第５図は本考案の他の実施例を示す
回路図である。 主要部分の符号の説明、１……演算増幅器、３
……バスコントロールネツトワーク、４……トレ
ブルコントロールネツトワーク、６……分圧回路
。

Claims (1)

    【実用新案登録請求の範囲】
  1. 演算増幅器と、前記演算増幅器の出力電圧をそ
    の一方の入力端に帰還する負帰還ループと、回路
    入力端と前記演算増幅器の一方の入力端との間及
    び前記負帰還ループ内に設けられた可変インピー
    ダンス回路とを含むＮＦ形トーンコントロール回
    路であつて、前記演算増幅器の出力端と基準電位
    点との間に接続されて前記演算増幅器の出力電圧
    の交流成分のみを分圧する分圧回路を備え、前記
    分圧回路の分圧電圧を前記演算増幅器の一方の入
    力端に帰還するようになされたことを特徴とする
    ＮＦ形トーンコントロール回路。
JP1984155498U 1984-10-15 1984-10-15 Expired JPH0241934Y2 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP1984155498U JPH0241934Y2 (ja) 1984-10-15 1984-10-15
DE19853536590 DE3536590A1 (de) 1984-10-15 1985-10-14 Klangreglerschaltkreis mit gegenkopplung
US06/787,822 US4633189A (en) 1984-10-15 1985-10-15 NF tone control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1984155498U JPH0241934Y2 (ja) 1984-10-15 1984-10-15

Publications (2)

Publication Number Publication Date
JPS6170420U true JPS6170420U (ja) 1986-05-14
JPH0241934Y2 JPH0241934Y2 (ja) 1990-11-08

Family

ID=15607361

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1984155498U Expired JPH0241934Y2 (ja) 1984-10-15 1984-10-15

Country Status (3)

Country Link
US (1) US4633189A (ja)
JP (1) JPH0241934Y2 (ja)
DE (1) DE3536590A1 (ja)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5131044A (en) * 1990-06-13 1992-07-14 Peavey Electronics Corporation Amplifier circuitry with mode compensation and selectable gain and frequency response in pre and post distortion circuits
US5197102A (en) * 1991-01-14 1993-03-23 Peavey Electronics Corporation Audio power amplifier system with frequency selective damping factor controls
FR2749453B1 (fr) * 1996-05-31 1998-09-04 Sgs Thomson Microelectronics Filtre audio analogique pour frequences aigues

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3419811A (en) * 1967-06-07 1968-12-31 Scott Inc H H Audio amplifier tone control system
HU163256B (ja) * 1972-02-15 1973-07-28
US4439739A (en) * 1981-08-17 1984-03-27 U.S. Philips Corporation Circuit arrangement with electronically controllable transfer characteristic

Also Published As

Publication number Publication date
US4633189A (en) 1986-12-30
JPH0241934Y2 (ja) 1990-11-08
DE3536590A1 (de) 1986-04-17

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