JPS56110313A - Sound volume control circuit - Google Patents

Sound volume control circuit

Info

Publication number
JPS56110313A
JPS56110313A JP1334980A JP1334980A JPS56110313A JP S56110313 A JPS56110313 A JP S56110313A JP 1334980 A JP1334980 A JP 1334980A JP 1334980 A JP1334980 A JP 1334980A JP S56110313 A JPS56110313 A JP S56110313A
Authority
JP
Japan
Prior art keywords
sound volume
connection
control circuit
control voltage
volume control
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
JP1334980A
Other languages
Japanese (ja)
Inventor
Katsuyuki Akimoto
Masateru Ito
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP1334980A priority Critical patent/JPS56110313A/en
Publication of JPS56110313A publication Critical patent/JPS56110313A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G1/00—Details of arrangements for controlling amplification
    • H03G1/02—Remote control of amplification, tone or bandwidth

Landscapes

  • Control Of Amplification And Gain Control (AREA)

Abstract

PURPOSE:To increase a control range of the sound volume for a device that controls the sound volume with the external control voltage, by switching the switches at the moment of connection of a connector. CONSTITUTION:The switch 17 is opened with no connection of the plug 21 for application of control voltage from outside, and the sound volume control characteristics of the IC11 has a state of full gain. Accordingly the maximum sound volume can be obtained by controlling the volume 3. With connection of the plug 21, the switch 17 is closed. And the sound volume is reduced down to a fixed level and can also be controlled by the external voltage and within the range of the above-mentioned maximum sound volume. Furthermore no limitation is given to the control voltage of sound volume since the resistance 16 is not always earthed.
JP1334980A 1980-02-05 1980-02-05 Sound volume control circuit Pending JPS56110313A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1334980A JPS56110313A (en) 1980-02-05 1980-02-05 Sound volume control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1334980A JPS56110313A (en) 1980-02-05 1980-02-05 Sound volume control circuit

Publications (1)

Publication Number Publication Date
JPS56110313A true JPS56110313A (en) 1981-09-01

Family

ID=11830624

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1334980A Pending JPS56110313A (en) 1980-02-05 1980-02-05 Sound volume control circuit

Country Status (1)

Country Link
JP (1) JPS56110313A (en)

Similar Documents

Publication Publication Date Title
JPS5785110A (en) Dc stabilized power supply circuit
JPS56110313A (en) Sound volume control circuit
MY101608A (en) Signal transmission circuit
JPS5535584A (en) Sound volume controller
JPS5658306A (en) Automatic gain control circuit
JPS5541012A (en) Gain control circuit
JPS5510267A (en) Switching circuit
JPS54846A (en) High frequency amplifier circuit
JPS57179486A (en) Electromagnetic valve drive circuit
JPS57113634A (en) Control circuit for transmitted power
JPS5730908A (en) Capacity type displacement conversion device
JPS57210705A (en) Muting circuit for variable impedance circuit
JPS5560868A (en) Circuit for measuring contact resistance of contact member during its opening and closing
JPS5479380A (en) Controller for remote operation
JPS6449408A (en) Intermediate frequency amplifier
JPS54133280A (en) Starting-shock absorber
JPS5717213A (en) Signal level control circuit
JPS55115726A (en) Switching circuit
JPS5725173A (en) Power converter circuit
JPS57210706A (en) Electronic volume control
JPS55135907A (en) Conversion circuit of ac input of sequence control device
JPS56101201A (en) Automatic controller
JPS5732104A (en) Power-voltage-controlled type amplifier
JPS57150207A (en) Electric signal level controlling circuit
JPS56139074A (en) Switching circuit