JPS59159018U - electronic volume circuit - Google Patents
electronic volume circuitInfo
- Publication number
- JPS59159018U JPS59159018U JP5421383U JP5421383U JPS59159018U JP S59159018 U JPS59159018 U JP S59159018U JP 5421383 U JP5421383 U JP 5421383U JP 5421383 U JP5421383 U JP 5421383U JP S59159018 U JPS59159018 U JP S59159018U
- Authority
- JP
- Japan
- Prior art keywords
- electronic volume
- voltage
- circuit
- volume circuit
- control
- 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)
- Amplifiers (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′図は従来の電子ボリューム回路図、第２図は本考
案の一実施例の電子ボリューム回路図、第３図は第２図
中の制御手段の一実施例を示す回路図である。
図において、６は制御手段、７は制御手段６の制御信号
入力端子、８はミューティング回路、９は制御手段６の
出力端子、１０はダイオード、−１１はコンデンサ、１
２．１３は抵抗、１４はトランジスタ、Ｐは接続点であ
る。なお、図中、同ブ符号は同一、又は相当部分を示す
。FIG. 1' is a conventional electronic volume circuit diagram, FIG. 2 is an electronic volume circuit diagram according to an embodiment of the present invention, and FIG. 3 is a circuit diagram showing an embodiment of the control means in FIG. In the figure, 6 is a control means, 7 is a control signal input terminal of the control means 6, 8 is a muting circuit, 9 is an output terminal of the control means 6, 10 is a diode, -11 is a capacitor, 1
2.13 is a resistor, 14 is a transistor, and P is a connection point. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.
Claims (2)
利得増幅器と、この電圧制御形可変利得増幅器に直流制
御電圧を供給するコントローラとで構成された電子ボリ
ューム回路において、電源投入後一定時間動作するミュ
ーティング回路により制御され、このミューティング回
−作中には前記直流制御電圧に所望の減衰を与え、動作
終了と同時に前記直流電圧を所望の減衰状態から元の所
定値まで徐々に復帰させる制御予設を備えたことを特徴
とする電子ボリューム回路。(1) In an electronic volume circuit composed of a voltage-controlled variable gain amplifier whose gain is controlled by a DC control voltage and a controller that supplies DC control voltage to the voltage-controlled variable gain amplifier, the electronic volume circuit is operated for a certain period of time after power is turned on. It is controlled by a muting circuit that operates, and during this muting circuit, a desired attenuation is applied to the DC control voltage, and upon completion of the operation, the DC voltage is gradually returned from the desired attenuation state to the original predetermined value. An electronic volume circuit characterized in that it is equipped with a control preset for controlling the volume.
た半導体スイッチにより構成したことを特徴とする実用
新案登録請求の範囲第１項記載の電子ボリューム回路。(2) The electronic volume circuit according to claim 1, wherein the control means is constituted by a semiconductor switch having a time constant circuit on a side control electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5421383U JPS59159018U (en) | 1983-04-12 | 1983-04-12 | electronic volume circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5421383U JPS59159018U (en) | 1983-04-12 | 1983-04-12 | electronic volume circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59159018U true JPS59159018U (en) | 1984-10-25 |
Family
ID=30184562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5421383U Pending JPS59159018U (en) | 1983-04-12 | 1983-04-12 | electronic volume circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59159018U (en) |
-
1983
- 1983-04-12 JP JP5421383U patent/JPS59159018U/en active Pending
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