JPS57202109A - Electronic volume - Google Patents

Electronic volume

Info

Publication number
JPS57202109A
JPS57202109A JP8663881A JP8663881A JPS57202109A JP S57202109 A JPS57202109 A JP S57202109A JP 8663881 A JP8663881 A JP 8663881A JP 8663881 A JP8663881 A JP 8663881A JP S57202109 A JPS57202109 A JP S57202109A
Authority
JP
Japan
Prior art keywords
control
hold
gates
voltage
output
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
JP8663881A
Other languages
Japanese (ja)
Other versions
JPH0131726B2 (en
Inventor
Akio Kaneko
Hitoshi Kajiwara
Kazuya Nishimukai
Yukihiko Haikawa
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.)
ARUPAIN KK
Alpine Electronics Inc
Original Assignee
ARUPAIN KK
Alpine Electronics Inc
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 ARUPAIN KK, Alpine Electronics Inc filed Critical ARUPAIN KK
Priority to JP8663881A priority Critical patent/JPS57202109A/en
Publication of JPS57202109A publication Critical patent/JPS57202109A/en
Publication of JPH0131726B2 publication Critical patent/JPH0131726B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers

Landscapes

  • Control Of Amplification And Gain Control (AREA)

Abstract

PURPOSE:To control a plurality of variable impedance circuits with the operation of a few switches. CONSTITUTION:A control circuit 3 consists of a T-V converter 3A which counts a clock pulse supplied via a contact 2A or 2B of a switch 2 connected to an output terminal of a clock pulse generator 1 and generates a positive or negative voltage in response to the amount of counts, and of a circuit 3B which adds or subtracts a voltage of hold through gates 4 and 5 inputted from a terminal 3C and an output voltage of the 3A, and the control output is applied to the hold through gates 4 and 5. The hold through gates 4 and 5 hold or pass through an output voltage of the control circuit in response to a control signal applied at control terminals 4A and 5A to control the transfer impedance of impedance circuits 6 and 7 for balance control and volume control in accordance with the combination of each switch.
JP8663881A 1981-06-05 1981-06-05 Electronic volume Granted JPS57202109A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8663881A JPS57202109A (en) 1981-06-05 1981-06-05 Electronic volume

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8663881A JPS57202109A (en) 1981-06-05 1981-06-05 Electronic volume

Publications (2)

Publication Number Publication Date
JPS57202109A true JPS57202109A (en) 1982-12-10
JPH0131726B2 JPH0131726B2 (en) 1989-06-27

Family

ID=13892557

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8663881A Granted JPS57202109A (en) 1981-06-05 1981-06-05 Electronic volume

Country Status (1)

Country Link
JP (1) JPS57202109A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59193035U (en) * 1983-06-06 1984-12-21 クラリオン株式会社 Electronic controller for car audio

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59193035U (en) * 1983-06-06 1984-12-21 クラリオン株式会社 Electronic controller for car audio
JPS6340918Y2 (en) * 1983-06-06 1988-10-26

Also Published As

Publication number Publication date
JPH0131726B2 (en) 1989-06-27

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