JPH0414906A - Fader changeover device - Google Patents
Fader changeover deviceInfo
- Publication number
- JPH0414906A JPH0414906A JP2118958A JP11895890A JPH0414906A JP H0414906 A JPH0414906 A JP H0414906A JP 2118958 A JP2118958 A JP 2118958A JP 11895890 A JP11895890 A JP 11895890A JP H0414906 A JPH0414906 A JP H0414906A
- Authority
- JP
- Japan
- Prior art keywords
- fader
- signal
- changeover switch
- variable resistor
- volume
- 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
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、フェーダボリウムを有効又は無効に切り替え
る切替スイッチの各ポジョンに於て、前後の信号のレベ
ル差をなくするようにしたフェーダ切替装置に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a fader switching device that eliminates level differences between front and rear signals at each position of a changeover switch for switching a fader volume between enabled and disabled.
従来の技術
従来、この種のフェーダ切替装置は、フェーダボリウム
の両端を各々前後の信号ラインに接続し、そのボリウム
の可動端子を切替スイッチに接続した構成より成り、そ
の切替スイッチによって、前記ボリウムの可動端子を信
号アースに接続する（有効）か、接続しない（無効）か
を切り替えて使用するものであった。BACKGROUND OF THE INVENTION Conventionally, this type of fader switching device has a configuration in which both ends of a fader volume are connected to the front and rear signal lines, and the movable terminal of the volume is connected to a changeover switch. It was used by switching between connecting the movable terminal to the signal ground (valid) or not connecting it (disabled).
発明が解決しようとする課題
しかしながら、上記従来の切替装置では、その構成上、
フェーダボリウムが無効時に、ボリウムの抵抗体が信号
アースよシ切シ離され、信号の負荷としての機能がなく
なり、有効時に比べて信号のレベルが上がるという問題
があった。Problems to be Solved by the Invention However, the conventional switching device described above has the following problems due to its configuration.
When the fader volume is disabled, the resistor of the volume is disconnected from the signal ground, and the fader volume loses its function as a signal load, resulting in a higher signal level than when it is enabled.
本発明はそのような問題点を解決するものであり、フェ
ーダボリウムの有効、無効時の信号のレベル差をなくす
ることができる優れたフェーダ切替装置を提供すること
を目的とするものである。SUMMARY OF THE INVENTION The present invention is intended to solve such problems, and it is an object of the present invention to provide an excellent fader switching device that can eliminate the difference in signal level when a fader volume is enabled and disabled.
課題を解決するだめの手段
本発明は、上記目的を達成するために、フェーダボリウ
ムを有効又は無効に切り替えるスイッチの一方の端子と
前後の各信号ラインとの間に抵抗を各１本宛接続し、フ
ェーダボリウムが無効時に、前記抵抗を信号の負荷とす
ることによって、無効時の信号のレベルアップを防ぎ、
以てフエーダボリウムの有効、無効時のレベル差をなく
するようにしたものである。Means for Solving the Problem In order to achieve the above object, the present invention connects one resistor between one terminal of a switch for enabling or disabling the fader volume and each of the front and rear signal lines. , by using the resistor as a signal load when the fader volume is disabled, the level of the signal is prevented from increasing when the fader volume is disabled;
This eliminates the level difference when the fader volume is enabled and disabled.
作用
本発明は上記のような構成によシ以下のような作用を有
する。Effects The present invention has the following effects due to the above-described structure.
即ち、フェーダボリウムが有効なときは、そのボリウム
の可動端子が切替スイッチによシ信号アースに接続され
るため、ボリウムの抵抗体は前後の信号ラインの負荷と
なる。That is, when a fader volume is enabled, the movable terminal of the volume is connected to the signal ground by the changeover switch, so the resistor of the volume becomes a load on the front and rear signal lines.
片や、フェーダボリウムが無効なときは、可動端子が信
号アースよシ離れ負荷とならなくな゛り信号のレベルが
上がる。しかし、このとき、切替スイッチの一方の端子
と前後の各信号ラインとの間に、フェーダボリウムの半
分の抵抗値に等しい抵抗値を持った抵抗を、各々１本宛
接続しであるので、フェーダボリウムの抵抗体が負荷と
ならないときに、前記抵抗が負荷となり、前記信号のレ
ベルアンプを防いでいる。On the other hand, when the fader volume is disabled, the movable terminal is no longer a load far from the signal ground, and the signal level increases. However, at this time, one resistor with a resistance value equal to half the resistance value of the fader volume is connected between one terminal of the changeover switch and each of the front and rear signal lines, so the fader When the resistor of the volume does not serve as a load, the resistor serves as a load and prevents level amplification of the signal.
これにより、フェーダボリウムの有効、無効時のレベル
差をなくすことが可能となる。This makes it possible to eliminate level differences when the fader volume is enabled and disabled.
実施例
図は本発明の一実施例であるフェーダ切替装置の要部回
路図で、図中、Ｒはフェーダボリウムで、そのボリウム
の可動端子が信号アースに接続したときが有効であり、
接続しないときが無効であるとする。ＳＷはフェーダボ
リウムＲを有効又は無効に切υ替える切替スイッチ、Ｒ
１，Ｒ２は切替スイッチＳＷの一方の端子と前後の各信
号ラインとの間に設けた抵抗で、これら各抵抗Ｒ，、Ｒ
２は、フェーダボリウムＲの１／２の値の抵抗値を有し
、７エーダボリウムＲが無効時に、前記各信号ラインの
負荷として機能する。The figure is a circuit diagram of a main part of a fader switching device which is an embodiment of the present invention. In the figure, R is a fader volume, which is effective when the movable terminal of the volume is connected to the signal ground.
It is assumed that it is invalid when there is no connection. SW is a changeover switch that enables or disables the fader volume R.
1 and R2 are resistors provided between one terminal of the changeover switch SW and each of the front and rear signal lines.
2 has a resistance value 1/2 of the fader volume R, and 7 functions as a load for each of the signal lines when the fader volume R is disabled.
Ａ】は前の信号ラインに接続のアンプ、Ａ２は後の信号
ラインに接続のアンプ、ＳＰｌは前のアンプＡ１に接続
のスピーカ、ＳＦ３は後のアンプＡ２に接続のスピーカ
、Ｒｇ′は信号源インピーダンス、Ｓは信号源である。A] is the amplifier connected to the previous signal line, A2 is the amplifier connected to the latter signal line, SPl is the speaker connected to the former amplifier A1, SF3 is the speaker connected to the latter amplifier A2, and Rg' is the signal source. Impedance, S is the signal source.
次に、動作について説明する。Next, the operation will be explained.
切替スイッチＳＷがＡ側１てなっていると、フエダボリ
ウムＲの可動端子と信号アースとが接続状態にあって、
フェーダボリウムＲは有効となシ、各々前と後の信号を
制御することが可能となる。When the changeover switch SW is set to A side 1, the movable terminal of the feeder volume R and the signal ground are connected,
When the fader volume R is enabled, it becomes possible to control the front and rear signals respectively.
切替スイッチＳＷかＢ＠になると、７エーダボリウムＲ
の可動端子はオープン状態となり、信号の制御を不可能
とする。ところが、このとき抵抗Ｒ□、Ｒ２が信号アー
スに接続されるため、その抵抗Ｒ１＋ Ｒ２（各々の抵
抗値はＲ／２）が各々前と後の信号の負荷となシ無幼時
の信号のレベルアップを防ぐ。これにより切替スイッチ
ＳＷの切り替えによる、つ″１シフニーダボリウムの有
効、無効時の信号のレベル差をなくすることができる。When the changeover switch is set to SW or B@, 7 Ada volume R
The movable terminal becomes open, making it impossible to control the signal. However, at this time, the resistors R□ and R2 are connected to the signal ground, so the resistors R1 + R2 (resistance value of each is R/2) become the load of the previous and subsequent signals, respectively, and the initial signal level prevent up. As a result, it is possible to eliminate the difference in signal level between valid and invalid levels of the single shift knob due to switching of the selector switch SW.
′発明の効果
本発明は上記実施例より明らかなように、切替スイッチ
の一方の端子と前後の各信号ラインとの間に、フェーダ
ボリウムの無効時に信号のレベルアップを防ぐための抵
抗を設けたものであるから、フェーダボリウムの有効、
無効の切替スイッチの各ポジョンに於て、信号のレベル
差をなくすることができる。'Effects of the Invention As is clear from the above embodiment, the present invention provides a resistor between one terminal of the selector switch and each of the front and rear signal lines to prevent the signal level from increasing when the fader volume is disabled. Because of this, the effectiveness of the fader volume,
It is possible to eliminate signal level differences at each position of the ineffective switch.
図は本発明の一実施例であるフェーダ切替装置の要部回
路図である。
Ｒ・・・フェーダボリウム、ＳＷ・・・切替スイッチ、
Ｒ１、Ｒ２・・抵抗、Ａ□・・・前のアンプ、Ａ２ ・
後のアンプ、ＳＰｌ、ＳＦ３・・・スピーカ、Ｒｇ ／
信号源インピーダンス、Ｓ・・信号源。The figure is a circuit diagram of a main part of a fader switching device which is an embodiment of the present invention. R...fader volume, SW...changeover switch,
R1, R2...Resistance, A□...Previous amplifier, A2 ・
Rear amplifier, SPl, SF3...Speaker, Rg/
Signal source impedance, S...signal source.
Claims (1)
の一方の端子と前後の各信号ラインとの間に、前記フェ
ーダボリウムの無効時に信号のレベルアップを防ぐため
の抵抗を設けたフェーダ切替装置。A fader switching device comprising a resistor provided between one terminal of a switch for enabling or disabling the fader volume and each of the front and rear signal lines in order to prevent the signal level from increasing when the fader volume is disabled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2118958A JPH0414906A (en) | 1990-05-08 | 1990-05-08 | Fader changeover device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2118958A JPH0414906A (en) | 1990-05-08 | 1990-05-08 | Fader changeover device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0414906A true JPH0414906A (en) | 1992-01-20 |
Family
ID=14749489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2118958A Pending JPH0414906A (en) | 1990-05-08 | 1990-05-08 | Fader changeover device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0414906A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8809839B2 (en) * | 2009-07-03 | 2014-08-19 | Samsung Electronics Co., Ltd. | Organic semiconductor polymer, transistor including an organic semiconductor polymer and methods of fabricating the same |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6043100B2 (en) * | 1979-02-16 | 1985-09-26 | 不二製油株式会社 | Method for producing gel food |
-
1990
- 1990-05-08 JP JP2118958A patent/JPH0414906A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6043100B2 (en) * | 1979-02-16 | 1985-09-26 | 不二製油株式会社 | Method for producing gel food |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8809839B2 (en) * | 2009-07-03 | 2014-08-19 | Samsung Electronics Co., Ltd. | Organic semiconductor polymer, transistor including an organic semiconductor polymer and methods of fabricating the same |
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