JPS5679507A - Digital type level setting device - Google Patents

Digital type level setting device

Info

Publication number
JPS5679507A
JPS5679507A JP15712179A JP15712179A JPS5679507A JP S5679507 A JPS5679507 A JP S5679507A JP 15712179 A JP15712179 A JP 15712179A JP 15712179 A JP15712179 A JP 15712179A JP S5679507 A JPS5679507 A JP S5679507A
Authority
JP
Japan
Prior art keywords
counter
level
given
signal
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
JP15712179A
Other languages
Japanese (ja)
Other versions
JPS6244722B2 (en
Inventor
Masao Tomita
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 JP15712179A priority Critical patent/JPS5679507A/en
Publication of JPS5679507A publication Critical patent/JPS5679507A/en
Publication of JPS6244722B2 publication Critical patent/JPS6244722B2/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 without distortion of the input signal

Abstract

PURPOSE:To suppress the change in the set level at transient state, by providing the gain set and preset according to signal level. CONSTITUTION:In a change-over switch 10 at AUTO position, a signal is given to a digital control section 4 via a level detector 6, AD converter 7, and counter 5. The digital control section 4 detects and stores the maximum value out of the count output fed from the counter, and the digital output is given to the variable gain circuit as a control signal. The transient output voltage at on the power supply switch 13 is fed to a load control terminal of the counter 5 via an integral network consisting of a resistor 14 and a capacitor 15 and a transistor 17. By setting the preset value given to the load input terminal 2 to a suitable value, an abnormally high level of the signal level appeared at the output terminal 2 can be avoided even immediately after the application of power supply.
JP15712179A 1979-12-03 1979-12-03 Digital type level setting device Granted JPS5679507A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15712179A JPS5679507A (en) 1979-12-03 1979-12-03 Digital type level setting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15712179A JPS5679507A (en) 1979-12-03 1979-12-03 Digital type level setting device

Publications (2)

Publication Number Publication Date
JPS5679507A true JPS5679507A (en) 1981-06-30
JPS6244722B2 JPS6244722B2 (en) 1987-09-22

Family

ID=15642665

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15712179A Granted JPS5679507A (en) 1979-12-03 1979-12-03 Digital type level setting device

Country Status (1)

Country Link
JP (1) JPS5679507A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58194112A (en) * 1982-05-07 1983-11-12 Akai Electric Co Ltd Automatic storage device of adjusting value for sound recording level adjustment potentiometer in tape recorder
JPS59169213A (en) * 1983-03-16 1984-09-25 Nec Corp Sound volume varying device
JPS6324709U (en) * 1986-07-30 1988-02-18
JP2008109211A (en) * 2006-10-23 2008-05-08 Matsushita Electric Ind Co Ltd Amplification apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53106520A (en) * 1977-02-28 1978-09-16 Sony Corp Memory type gain controller

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53106520A (en) * 1977-02-28 1978-09-16 Sony Corp Memory type gain controller

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58194112A (en) * 1982-05-07 1983-11-12 Akai Electric Co Ltd Automatic storage device of adjusting value for sound recording level adjustment potentiometer in tape recorder
JPS59169213A (en) * 1983-03-16 1984-09-25 Nec Corp Sound volume varying device
JPS6324709U (en) * 1986-07-30 1988-02-18
JP2008109211A (en) * 2006-10-23 2008-05-08 Matsushita Electric Ind Co Ltd Amplification apparatus

Also Published As

Publication number Publication date
JPS6244722B2 (en) 1987-09-22

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