JPH024167B2 - - Google Patents

Info

Publication number
JPH024167B2
JPH024167B2 JP58105170A JP10517083A JPH024167B2 JP H024167 B2 JPH024167 B2 JP H024167B2 JP 58105170 A JP58105170 A JP 58105170A JP 10517083 A JP10517083 A JP 10517083A JP H024167 B2 JPH024167 B2 JP H024167B2
Authority
JP
Japan
Prior art keywords
vehicle speed
increases
variable gain
impedance
amplifier circuit
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.)
Expired - Lifetime
Application number
JP58105170A
Other languages
English (en)
Japanese (ja)
Other versions
JPS59230314A (ja
Inventor
Noryuki Azuma
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP10517083A priority Critical patent/JPS59230314A/ja
Publication of JPS59230314A publication Critical patent/JPS59230314A/ja
Publication of JPH024167B2 publication Critical patent/JPH024167B2/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
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/32—Automatic control in amplifiers having semiconductor devices the control being dependent upon ambient noise level or sound level

Landscapes

  • Control Of Amplification And Gain Control (AREA)
JP10517083A 1983-06-13 1983-06-13 自動音量調整装置 Granted JPS59230314A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10517083A JPS59230314A (ja) 1983-06-13 1983-06-13 自動音量調整装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10517083A JPS59230314A (ja) 1983-06-13 1983-06-13 自動音量調整装置

Publications (2)

Publication Number Publication Date
JPS59230314A JPS59230314A (ja) 1984-12-24
JPH024167B2 true JPH024167B2 (en]) 1990-01-26

Family

ID=14400203

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10517083A Granted JPS59230314A (ja) 1983-06-13 1983-06-13 自動音量調整装置

Country Status (1)

Country Link
JP (1) JPS59230314A (en])

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012182648A (ja) * 2011-03-01 2012-09-20 Mitsubishi Electric Corp アンプ、移動体情報機器およびアンプ省電力化方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5663118U (en]) * 1979-10-18 1981-05-27

Also Published As

Publication number Publication date
JPS59230314A (ja) 1984-12-24

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