JPS5996916U - variable gain amplifier circuit - Google Patents
variable gain amplifier circuitInfo
- Publication number
- JPS5996916U JPS5996916U JP19380382U JP19380382U JPS5996916U JP S5996916 U JPS5996916 U JP S5996916U JP 19380382 U JP19380382 U JP 19380382U JP 19380382 U JP19380382 U JP 19380382U JP S5996916 U JPS5996916 U JP S5996916U
- Authority
- JP
- Japan
- Prior art keywords
- amplifier
- variable gain
- amplifier circuit
- gain amplifier
- variable resistor
- 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
Links
Landscapes
- Control Of Amplification And Gain Control (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第1図a、 b、 cは、従来の利得可変回路、第
2図は、本発明の一実施例による利得可変回路、第3図
は、その動作利得を示す図である。
1、 4. 5・・・・・・ボリューム、2・・・・・
・増幅器、3・・・・・・スイッチ、Ro−R3・・・
・・・抵抗。1a, b, and c are conventional variable gain circuits, FIG. 2 is a variable gain circuit according to an embodiment of the present invention, and FIG. 3 is a diagram showing the operating gain thereof. 1, 4. 5...Volume, 2...
・Amplifier, 3...Switch, Ro-R3...
···resistance.
Claims (1)
幅器の負帰還回路に設けられた第2の可変抵抗とを備え
、前記第1および第2の可変抵抗を連動して、可変抵抗
の抵抗値により、増幅器の全、体の利得を可変するよう
にしたことを特徴とする可変利得増幅回路。a first variable resistor connected to the output side of an amplifier; and a second variable resistor provided in a negative feedback circuit of the amplifier; A variable gain amplifier circuit characterized in that the total gain of the amplifier is varied by the resistance value of the amplifier.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19380382U JPS5996916U (en) | 1982-12-21 | 1982-12-21 | variable gain amplifier circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19380382U JPS5996916U (en) | 1982-12-21 | 1982-12-21 | variable gain amplifier circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5996916U true JPS5996916U (en) | 1984-06-30 |
Family
ID=30416740
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP19380382U Pending JPS5996916U (en) | 1982-12-21 | 1982-12-21 | variable gain amplifier circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5996916U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6243908A (en) * | 1985-08-21 | 1987-02-25 | Matsushita Electric Ind Co Ltd | Amplifier |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5314442B2 (en) * | 1974-09-02 | 1978-05-17 |
-
1982
- 1982-12-21 JP JP19380382U patent/JPS5996916U/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5314442B2 (en) * | 1974-09-02 | 1978-05-17 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6243908A (en) * | 1985-08-21 | 1987-02-25 | Matsushita Electric Ind Co Ltd | Amplifier |
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