JPS5541044A - Tone control circuit - Google Patents

Tone control circuit

Info

Publication number
JPS5541044A
JPS5541044A JP11428078A JP11428078A JPS5541044A JP S5541044 A JPS5541044 A JP S5541044A JP 11428078 A JP11428078 A JP 11428078A JP 11428078 A JP11428078 A JP 11428078A JP S5541044 A JPS5541044 A JP S5541044A
Authority
JP
Japan
Prior art keywords
capacitors
slider
variable resistor
resistors
roll
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
JP11428078A
Other languages
Japanese (ja)
Other versions
JPS6056326B2 (en
Inventor
Eijiro Tamura
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.)
TRIO KENWOOD CORP
Kenwood KK
Original Assignee
TRIO KENWOOD CORP
Kenwood KK
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 TRIO KENWOOD CORP, Kenwood KK filed Critical TRIO KENWOOD CORP
Priority to JP53114280A priority Critical patent/JPS6056326B2/en
Priority to US06/067,203 priority patent/US4262260A/en
Publication of JPS5541044A publication Critical patent/JPS5541044A/en
Publication of JPS6056326B2 publication Critical patent/JPS6056326B2/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
    • H03G5/04—Manually-operated control in untuned amplifiers

Landscapes

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

Abstract

PURPOSE:To reduce the number of the selector switches and the capacitors, by the connection of the capacitors which determine the turn-over frequency to the slider of the variable resistor for high band and in parallel with the variable resistor at lower band respectively via the selector switch. CONSTITUTION:The components constant of the output circuit (resistors 2,6,9,11 and capacitors C4, 13) and the feedback circuit (resistors 3,7,10,12,C5,14) of the operational amplifier 1 are made equal and symmetrical, and the slider of the high band variable resistor 15 is grounded selectively via or not via C26 which determines the high band turn over and roll-off frequency by means of the selector switch 27. On the other hand, the slider of the low band variable resistor 8 is grounded, and C24 which determines the low band turn over and roll off frequency is connected in parallel with the resistor via the selector switch 25 selectively. The tone control characteristics can be obtained with the addition of the attenuation of the output circuit and the feedback circuit depending on the position of the slider of the resistors 8 and 15. With this constitution, the number of capacitors and selector switches determining the turn over and roll off can be reduced halves than conventional methods.
JP53114280A 1978-08-18 1978-09-18 Tone control circuit Expired JPS6056326B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP53114280A JPS6056326B2 (en) 1978-09-18 1978-09-18 Tone control circuit
US06/067,203 US4262260A (en) 1978-08-18 1979-08-16 Tone control circuitry

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53114280A JPS6056326B2 (en) 1978-09-18 1978-09-18 Tone control circuit

Publications (2)

Publication Number Publication Date
JPS5541044A true JPS5541044A (en) 1980-03-22
JPS6056326B2 JPS6056326B2 (en) 1985-12-10

Family

ID=14633870

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53114280A Expired JPS6056326B2 (en) 1978-08-18 1978-09-18 Tone control circuit

Country Status (1)

Country Link
JP (1) JPS6056326B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58129726U (en) * 1982-02-26 1983-09-02 日本コロムビア株式会社 Turnover switching circuit for tone control circuit
JPH0439726U (en) * 1990-07-31 1992-04-03

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58129726U (en) * 1982-02-26 1983-09-02 日本コロムビア株式会社 Turnover switching circuit for tone control circuit
JPH0439726U (en) * 1990-07-31 1992-04-03

Also Published As

Publication number Publication date
JPS6056326B2 (en) 1985-12-10

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