JPS5520062A - Tone control circuit - Google Patents

Tone control circuit

Info

Publication number
JPS5520062A
JPS5520062A JP9319178A JP9319178A JPS5520062A JP S5520062 A JPS5520062 A JP S5520062A JP 9319178 A JP9319178 A JP 9319178A JP 9319178 A JP9319178 A JP 9319178A JP S5520062 A JPS5520062 A JP S5520062A
Authority
JP
Japan
Prior art keywords
resistance
input terminal
amplifier
output terminal
variable resistor
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
JP9319178A
Other languages
Japanese (ja)
Other versions
JPS5923484B2 (en
Inventor
Shigenobu Kimura
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.)
Nippon Gakki Co Ltd
Original Assignee
Nippon Gakki 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 Nippon Gakki Co Ltd filed Critical Nippon Gakki Co Ltd
Priority to JP53093191A priority Critical patent/JPS5923484B2/en
Publication of JPS5520062A publication Critical patent/JPS5520062A/en
Publication of JPS5923484B2 publication Critical patent/JPS5923484B2/en
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

Landscapes

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

Abstract

PURPOSE:To obtain the characteristics which changes delicately by connecting the variable resistor via the 1st resistance between the feedback input terminal and the output terminal of the amplifier constituting the control circuit along with the 2nd resistance connected in parallel to the variable resistor and then providing the filter between the output terminal and the variable resistor. CONSTITUTION:Amplifier A1 featuring such sufficient gain that the potential can be regarded identical between the input terminal and the feedback input terminal plus 1st resistance R1 are connected in series between input terminal IN to apply the input signals and output terminal OUT to obtain the output signals. At the same time, variable resistor VR consisting of resistance R3 and R4 is connected between terminal OUT and the feedback input terminal of amplifier A1, and 2nd resistanse R2 is provided between the output terminal of A1 and the feedback input terminal. Furthermore, filter F, amplifier A2 featuring the gain of 1 and resistance R5 are connected in series between the output terminal of A1 and resistor VR. In such constitution, the ratio between R3 and R4 is varied by controlling VR, and as a result the characteristic curve of the circuit can be changed quite easily.
JP53093191A 1978-08-01 1978-08-01 Tone control circuit Expired JPS5923484B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53093191A JPS5923484B2 (en) 1978-08-01 1978-08-01 Tone control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53093191A JPS5923484B2 (en) 1978-08-01 1978-08-01 Tone control circuit

Publications (2)

Publication Number Publication Date
JPS5520062A true JPS5520062A (en) 1980-02-13
JPS5923484B2 JPS5923484B2 (en) 1984-06-02

Family

ID=14075679

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53093191A Expired JPS5923484B2 (en) 1978-08-01 1978-08-01 Tone control circuit

Country Status (1)

Country Link
JP (1) JPS5923484B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH053431Y2 (en) * 1985-10-21 1993-01-27

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51846U (en) * 1974-06-18 1976-01-06

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51846U (en) * 1974-06-18 1976-01-06

Also Published As

Publication number Publication date
JPS5923484B2 (en) 1984-06-02

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