JPS6247220U - - Google Patents
Info
- Publication number
- JPS6247220U JPS6247220U JP13820085U JP13820085U JPS6247220U JP S6247220 U JPS6247220 U JP S6247220U JP 13820085 U JP13820085 U JP 13820085U JP 13820085 U JP13820085 U JP 13820085U JP S6247220 U JPS6247220 U JP S6247220U
- Authority
- JP
- Japan
- Prior art keywords
- duty ratio
- switching
- pulse signal
- signal
- pass filter
- 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
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Control Of Amplification And Gain Control (AREA)
Description
第１図はこの考案の一実施例の構成を示す回路
図、第２図は同実施例の回路各部の波形を示す波
形図、第３図は従来の利得制御回路の構成を示す
回路図である。
１０……ローパスフイルタ、２０……キヤリア
信号発生部（デユーテイ比制御手段）、２１……
パルス幅変調部（デユーテイ比制御手段）、ＳＷ
１〜ＳＷ４……スイツチング素子（スイツチング
手段）。
Figure 1 is a circuit diagram showing the configuration of an embodiment of this invention, Figure 2 is a waveform diagram showing waveforms of various parts of the circuit of the same embodiment, and Figure 3 is a circuit diagram showing the configuration of a conventional gain control circuit. be. 10...Low pass filter, 20...Carrier signal generator (duty ratio control means), 21...
Pulse width modulation section (duty ratio control means), SW
1 to SW4...Switching element (switching means).
Claims (1)
チングして出力するスイツチング手段と、 前記パルス信号のデユーテイ比を制御電圧に応
じて変化させるデユーテイ比制御手段と、 前記スイツチング手段の出力信号を復調するロ
ーパスフイルタ とを具備することを特徴とする利得制御回路。[Claims for Utility Model Registration] Switching means for switching and outputting an input analog signal using a pulse signal; duty ratio control means for changing the duty ratio of the pulse signal in accordance with a control voltage; A gain control circuit comprising: a low-pass filter that demodulates an output signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13820085U JPS6247220U (en) | 1985-09-10 | 1985-09-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13820085U JPS6247220U (en) | 1985-09-10 | 1985-09-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6247220U true JPS6247220U (en) | 1987-03-23 |
Family
ID=31042964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13820085U Pending JPS6247220U (en) | 1985-09-10 | 1985-09-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6247220U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012217223A (en) * | 2012-08-17 | 2012-11-08 | Asahi Kasei Electronics Co Ltd | Variable gain inverting amplifier circuit |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5433506A (en) * | 1977-06-01 | 1979-03-12 | Procter & Gamble | Detergent tablets |
| JPS5646327B2 (en) * | 1972-11-29 | 1981-11-02 |
-
1985
- 1985-09-10 JP JP13820085U patent/JPS6247220U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5646327B2 (en) * | 1972-11-29 | 1981-11-02 | ||
| JPS5433506A (en) * | 1977-06-01 | 1979-03-12 | Procter & Gamble | Detergent tablets |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012217223A (en) * | 2012-08-17 | 2012-11-08 | Asahi Kasei Electronics Co Ltd | Variable gain inverting amplifier circuit |
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