KR890003738U - 음향기기의 음성출력 제어장치 - Google Patents

음향기기의 음성출력 제어장치

Info

Publication number
KR890003738U
KR890003738U KR2019870012409U KR870012409U KR890003738U KR 890003738 U KR890003738 U KR 890003738U KR 2019870012409 U KR2019870012409 U KR 2019870012409U KR 870012409 U KR870012409 U KR 870012409U KR 890003738 U KR890003738 U KR 890003738U
Authority
KR
South Korea
Prior art keywords
control device
output control
voice output
sound equipment
sound
Prior art date
Application number
KR2019870012409U
Other languages
English (en)
Other versions
KR890007294Y1 (ko
Inventor
박홍규
Original Assignee
주식회사 금성사
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 주식회사 금성사 filed Critical 주식회사 금성사
Priority to KR2019870012409U priority Critical patent/KR890007294Y1/ko
Publication of KR890003738U publication Critical patent/KR890003738U/ko
Application granted granted Critical
Publication of KR890007294Y1 publication Critical patent/KR890007294Y1/ko

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3005—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers
    • H03G3/301—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers the gain being continuously variable
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/04—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements with semiconductor devices only
    • H03F3/10—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements with semiconductor devices only with diodes
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G7/00—Volume compression or expansion in amplifiers
    • H03G7/002—Volume compression or expansion in amplifiers in untuned or low-frequency amplifiers, e.g. audio amplifiers
    • H03G7/004—Volume compression or expansion in amplifiers in untuned or low-frequency amplifiers, e.g. audio amplifiers using continuously variable impedance devices
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G7/00—Volume compression or expansion in amplifiers
    • H03G7/002—Volume compression or expansion in amplifiers in untuned or low-frequency amplifiers, e.g. audio amplifiers
    • H03G7/005—Volume compression or expansion in amplifiers in untuned or low-frequency amplifiers, e.g. audio amplifiers using discontinuously variable devices, e.g. switch-operated

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Power Engineering (AREA)
  • Control Of Amplification And Gain Control (AREA)
KR2019870012409U 1987-07-29 1987-07-29 음향기기의 음성출력 제어장치 KR890007294Y1 (ko)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019870012409U KR890007294Y1 (ko) 1987-07-29 1987-07-29 음향기기의 음성출력 제어장치

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019870012409U KR890007294Y1 (ko) 1987-07-29 1987-07-29 음향기기의 음성출력 제어장치

Publications (2)

Publication Number Publication Date
KR890003738U true KR890003738U (ko) 1989-04-13
KR890007294Y1 KR890007294Y1 (ko) 1989-10-25

Family

ID=19265781

Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019870012409U KR890007294Y1 (ko) 1987-07-29 1987-07-29 음향기기의 음성출력 제어장치

Country Status (1)

Country Link
KR (1) KR890007294Y1 (ko)

Also Published As

Publication number Publication date
KR890007294Y1 (ko) 1989-10-25

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E701 Decision to grant or registration of patent right
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Payment date: 20010921

Year of fee payment: 13

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