JPH044419U - - Google Patents
Info
- Publication number
- JPH044419U JPH044419U JP4527290U JP4527290U JPH044419U JP H044419 U JPH044419 U JP H044419U JP 4527290 U JP4527290 U JP 4527290U JP 4527290 U JP4527290 U JP 4527290U JP H044419 U JPH044419 U JP H044419U
- Authority
- JP
- Japan
- Prior art keywords
- volume control
- gain
- amplifier
- circuit
- smoothing
- 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
- 238000009499 grossing Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
Landscapes
- Control Of Amplification And Gain Control (AREA)
Description
第１図はこの考案に係る音量調節回路の回路図
、第２図は平滑回路の出力電圧および制御電圧の
特性を示すグラフ、第３図は増幅器の利得特性を
示すグラフ、第４図は音量調節の総合特性を示す
グラフ、第５図は他の実施例を示す回路図、第６
図は他の実施例の制御電圧特性を示すグラフ、第
７図は従来の音量調節回路の回路図である。
１，１１……音量調節回路、２，３，１２，１
３，１４……平滑回路、４，５……結合回路、５
……増幅器、ＣＩ……パルス幅変調された音量制
御に係る信号、ＶＣ…増幅回路の利得を制御する
電圧。
Fig. 1 is a circuit diagram of the volume control circuit according to this invention, Fig. 2 is a graph showing the characteristics of the output voltage and control voltage of the smoothing circuit, Fig. 3 is a graph showing the gain characteristics of the amplifier, and Fig. 4 is the volume control circuit. A graph showing the overall characteristics of the adjustment, FIG. 5 is a circuit diagram showing another embodiment, and FIG.
The figure is a graph showing control voltage characteristics of another embodiment, and FIG. 7 is a circuit diagram of a conventional volume control circuit. 1, 11...Volume adjustment circuit, 2, 3, 12, 1
3, 14... Smoothing circuit, 4, 5... Coupling circuit, 5
...Amplifier, CI...Signal related to pulse width modulated volume control, VC...Voltage that controls the gain of the amplifier circuit.
Claims (1)
して得た直流電圧に基づいて増幅器の利得を制御
して音量の調節を行なう回路において、前記音量
制御に係る信号に対してそれぞれ異なる直流電圧
を出力する複数の平滑回路を設け、これら複数の
平滑回路の出力に基づいて前記増幅器の利得を制
御するよう構成したことを特徴とする音量調節回
路。 In a circuit that adjusts the volume by controlling the gain of an amplifier based on a DC voltage obtained by smoothing a signal related to volume control that is pulse width modulated, a different DC voltage is applied to each signal related to volume control. 1. A volume control circuit characterized in that a plurality of smoothing circuits are provided for outputting, and the gain of the amplifier is controlled based on the outputs of the plurality of smoothing circuits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4527290U JPH044419U (en) | 1990-04-27 | 1990-04-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4527290U JPH044419U (en) | 1990-04-27 | 1990-04-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH044419U true JPH044419U (en) | 1992-01-16 |
Family
ID=31559298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4527290U Pending JPH044419U (en) | 1990-04-27 | 1990-04-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH044419U (en) |
-
1990
- 1990-04-27 JP JP4527290U patent/JPH044419U/ja active Pending