JPS5721112A - Signal output variable amplifier - Google Patents

Signal output variable amplifier

Info

Publication number
JPS5721112A
JPS5721112A JP9597180A JP9597180A JPS5721112A JP S5721112 A JPS5721112 A JP S5721112A JP 9597180 A JP9597180 A JP 9597180A JP 9597180 A JP9597180 A JP 9597180A JP S5721112 A JPS5721112 A JP S5721112A
Authority
JP
Japan
Prior art keywords
input signal
amplifier
variable resistor
adjusting variable
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.)
Pending
Application number
JP9597180A
Other languages
Japanese (ja)
Inventor
Eikou Nomitsu
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP9597180A priority Critical patent/JPS5721112A/en
Publication of JPS5721112A publication Critical patent/JPS5721112A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/02—Manually-operated control
    • H03G3/04—Manually-operated control in untuned amplifiers

Landscapes

  • Control Of Amplification And Gain Control (AREA)

Abstract

PURPOSE:To adjust the amplification factor of an amplifier and the input signal inputted to the amplifier at the same time, by interlocking an input signal adjusting variable resistor and a negative feedback adjusting variable resistor 2. CONSTITUTION:When an input signal is small, an input signal adjusting variable resistor 1 is increased (r2 greater, r1 smaller) to increase the rate of the input signal inputed to an amplifier A, and an amount of the negative feedback is reduced with a negative feedback adjusting variable resistor 2 (R2 greater, R1 smaller) to increase the amplification factor of the amplifier. On the other hand, when an input signal is greater, the rate of an input signal is decreased to reduce the amplification factor. Thus, one knob and one amplifier can handle any signal from a very small to very large input signal.
JP9597180A 1980-07-12 1980-07-12 Signal output variable amplifier Pending JPS5721112A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9597180A JPS5721112A (en) 1980-07-12 1980-07-12 Signal output variable amplifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9597180A JPS5721112A (en) 1980-07-12 1980-07-12 Signal output variable amplifier

Publications (1)

Publication Number Publication Date
JPS5721112A true JPS5721112A (en) 1982-02-03

Family

ID=14152063

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9597180A Pending JPS5721112A (en) 1980-07-12 1980-07-12 Signal output variable amplifier

Country Status (1)

Country Link
JP (1) JPS5721112A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5314442B2 (en) * 1974-09-02 1978-05-17
JPS5495159A (en) * 1978-01-13 1979-07-27 Matsushita Electric Ind Co Ltd Amplifier

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5314442B2 (en) * 1974-09-02 1978-05-17
JPS5495159A (en) * 1978-01-13 1979-07-27 Matsushita Electric Ind Co Ltd Amplifier

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