JPS5921536Y2 - Tone adjustment switching circuit - Google Patents
Tone adjustment switching circuitInfo
- Publication number
- JPS5921536Y2 JPS5921536Y2 JP1978081854U JP8185478U JPS5921536Y2 JP S5921536 Y2 JPS5921536 Y2 JP S5921536Y2 JP 1978081854 U JP1978081854 U JP 1978081854U JP 8185478 U JP8185478 U JP 8185478U JP S5921536 Y2 JPS5921536 Y2 JP S5921536Y2
- Authority
- JP
- Japan
- Prior art keywords
- tone adjustment
- switching circuit
- circuit
- connector
- differential amplifier
- 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.)
- Expired
Links
Landscapes
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
- Control Of Amplification And Gain Control (AREA)
Description
【考案の詳細な説明】
本考案は、カーステレオ等に使用されるマルチトーン調
整切換回路に関するものである。[Detailed Description of the Invention] The present invention relates to a multi-tone adjustment switching circuit used in car stereos and the like.
従来のトーン調整切換回路として、内部セット内のトー
ン調整回路と外部セットのトーン調整回路とを切り換え
るようにしたものがあるが、調整周波数の多重化あるい
はマルチ化の点で問題があった。Conventional tone adjustment switching circuits have been designed to switch between the tone adjustment circuit in an internal set and the tone adjustment circuit in an external set, but there have been problems with multiplexing or multiplication of adjustment frequencies.
本考案は、このような点に鑑みてなされたもので、１個
の切換スイッチを追加するだけで、調整周波数の多重化
またはマルチ化を計るようにしたマルチトーン調整切換
回路を提供するものである。The present invention has been devised in view of these points, and provides a multi-tone adjustment switching circuit that allows multiplexing or multiplication of adjustment frequencies by simply adding one changeover switch. be.
第１図は本考案によるマルチトーン調整切換回路の一実
施例の回路図を示すもので、１は内部セットのトーン調
整回路、２は外部セットのトーン調整回路、３は差動増
幅器、４，５は増幅器、６Ａおよび６Ｂは凹型および凸
型コネクタ、７および８は第１および第２の切換スイッ
チである。FIG. 1 shows a circuit diagram of an embodiment of the multi-tone adjustment switching circuit according to the present invention, in which 1 is an internal set of tone adjustment circuits, 2 is an external set of tone adjustment circuits, 3 is a differential amplifier, 4, 5 is an amplifier, 6A and 6B are concave and convex connectors, and 7 and 8 are first and second changeover switches.
また、トーン調整回路１，２において、ＶＲ１〜４は可
変抵抗器、Ｌ０〜４はインダクタ、Ｒ１−Ｒ４は抵抗、
Ｃ１〜Ｃ４はコンテ゛ンサを示し、差動増幅器３におい
て、Ｑ１〜Ｑ３はトランジスタ、Ｒ５〜Ｒ１ｏは抵抗を
示し、さらに、Ｃ５，Ｃ６はコンテ゛ンサを示す。In addition, in the tone adjustment circuits 1 and 2, VR1-4 are variable resistors, L0-4 are inductors, R1-R4 are resistors,
C1 to C4 represent capacitors; in the differential amplifier 3, Q1 to Q3 represent transistors, R5 to R1o represent resistors, and C5 and C6 represent capacitors.
第１の切換スイッチ７はスイッチ７１および７２とから
なり、コネクタ６Ａと連動するようになっており、また
第２の切換スイッチ８は同様にスイッチ８１および８２
からなっている。The first changeover switch 7 is made up of switches 71 and 72 and is adapted to work in conjunction with the connector 6A, and the second changeover switch 8 is also made up of switches 81 and 82.
It consists of
第２図ａ−ｄは第１図のコネクタ６Ａ、６Ｂの切り離し
差し込み状態、切換スイッチ８のオン・オフに応じた動
作状態での接続関係を示している。2A to 2D show the connection relationship of the connectors 6A and 6B in FIG. 1 in a disconnected and inserted state and in an operating state corresponding to the on/off state of the changeover switch 8.
また、第３図ａ−ｄはそれぞれ第２図ａ −ｄにおける
調整周波数の特性図を示しており、Ａはトーン調整回路
１の調整周波数特性、Ｂはトーン調整回路２の調整周波
数特性である。Furthermore, FIGS. 3 a to 3 d show characteristic diagrams of the adjusted frequencies in FIGS. 2 a to d, respectively, where A is the adjusted frequency characteristic of the tone adjustment circuit 1, and B is the adjusted frequency characteristic of the tone adjustment circuit 2. .
なお横軸は周波数、縦軸はブースト量を示している。Note that the horizontal axis shows the frequency, and the vertical axis shows the boost amount.
以下、第１図の動作を第２図、第３図を参照しながら説
明する。The operation shown in FIG. 1 will be explained below with reference to FIGS. 2 and 3.
（１）コネクタ６Ｂがコネクタ６Ａから切り離されてお
り、かつ、第１および第２の切換スイッチ７．８が図の
ようにオフの状態にある時、第２図ａのように、差動増
幅器３には内部セットのトーン調整回路１が接続される
ので、トーン調整回路１のみが動作し、その調整周波数
特性は第３図ａのようになる。(1) When the connector 6B is disconnected from the connector 6A and the first and second changeover switches 7.8 are in the OFF state as shown in the figure, the differential amplifier Since the tone adjustment circuit 1 of the internal set is connected to 3, only the tone adjustment circuit 1 operates, and its adjustment frequency characteristic becomes as shown in FIG. 3a.
（２）コネクタ６Ｂと６Ａが切り離されており、かつ、
第２の切換スイッチ８が図と反対側に移動されてオンし
ている時、第２図すのように差動増幅器３から２つのト
ーン調整回路１および２は切り離されており、それらは
全て不動作状態になり、その周波数特性は第３図すのよ
うになる。(2) Connectors 6B and 6A are disconnected, and
When the second selector switch 8 is moved to the opposite side as shown in the figure and turned on, the two tone adjustment circuits 1 and 2 are disconnected from the differential amplifier 3 as shown in Figure 2, and all of them are It becomes inactive and its frequency characteristics become as shown in Figure 3.
（３）コネクタ６Ｂが６Ａに差し込まれると同時に第１
の切換スイッチ７が図と反対側に移動されてオンしてお
り、かつ、第２の切換スイッチ８がオンしている時、第
２図Ｃのように、トーン調整回路１および２が差動増幅
器３に接続され、２つのトーン調整回路が動作し、その
周波数特性は第３図ＣのＩ、ＩＩのようにそれぞれの特
性が合成されたものとなっている。(3) At the same time when connector 6B is inserted into 6A,
When the changeover switch 7 is moved to the opposite side of the figure and is turned on, and the second changeover switch 8 is turned on, the tone adjustment circuits 1 and 2 are set to the differential mode as shown in Figure 2C. Connected to the amplifier 3, two tone adjustment circuits operate, and their frequency characteristics are a combination of their respective characteristics as shown in I and II in FIG. 3C.
（４）コネクタ６Ｂが６Ａに差し込まれると同時に第１
の切換スイッチ７がオンしており、かつ、第２の切換ス
イッチ８がオフしている時、第２図ｄに示すように、差
動増幅器３には外部セットのトーン調整回路２のみが接
続され、それだけが動作して、第３図ｄのような周波数
特性となる。(4) At the same time when connector 6B is inserted into 6A,
When the changeover switch 7 is on and the second changeover switch 8 is off, only the tone adjustment circuit 2 of the external set is connected to the differential amplifier 3, as shown in FIG. 2d. Then, only that part operates, resulting in the frequency characteristics as shown in Fig. 3(d).
従来の回路では、コネクタ６Ａ、６Ｂに連動する第１の
切換スイッチ７のみであったので、内部セットと外部セ
ットのトーン調整回路とを切り換えることができるのみ
であったが、本考案の実施例によれば、第２の切換スイ
ッチ８を追加することにより切換スイッチを二重に設け
るようにしたものであるから、上述したように４つの動
作を行なうことができ、それにより、調整周波数の多重
化ま、たはマルチ化を計ることができる。In the conventional circuit, only the first selector switch 7 was connected to the connectors 6A and 6B, so it was only possible to switch between the internal set and external set of tone adjustment circuits, but the embodiment of the present invention According to the above, by adding the second changeover switch 8, the changeover switch is doubled, so the four operations can be performed as described above, and thereby the adjustment frequency can be multiplexed. It is possible to measure multiplication or multiplication.
以上述べたように、本考案によれば、簡単な回路構成で
、調整周波数の多重化を計ることができる。As described above, according to the present invention, adjustment frequencies can be multiplexed with a simple circuit configuration.
第１図は本考案によるトーン調整切換回路の一実施例の
構成国、第２図ａ−ｄは第１図の各動作時の接続図、第
３図ａ−ｄはそれぞれ第２図ａ−ｄにおける周波数特性
図を示す。
１．２はトーン調整回路、３は差動増幅器、６Ａ、６Ｂ
はコネクタ、７，８は第１および第２の切換スイッチで
ある。FIG. 1 shows the configuration of an embodiment of the tone adjustment switching circuit according to the present invention, FIGS. 2 a to d are connection diagrams for each operation in FIG. 1, and FIGS. The frequency characteristic diagram at d is shown. 1.2 is a tone adjustment circuit, 3 is a differential amplifier, 6A, 6B
is a connector, and 7 and 8 are first and second changeover switches.
Claims (1)
記第２のトーン調整回路に接続されたコネクタ手段と、
該コネクタ手段と連動して動作する第１の切換スイッチ
手段と、前記コネクタ手段が切り離されている時に、前
記差動増幅器の入力および出力の間に前記第１の切換ス
イッチ手段を介して前記第１のトーン調整回路を接続し
たり切り離したりし、前記コネクタ手段が差し込まれて
いる時に、前記差動増幅器の入力および出力との間に前
記第１の切換スイッチ手段を介して前記第１および第２
のトーン調整回路の両方を接続したり、前記第２のトー
ン調整回路を接続したりする第２の切換スイッチ手段と
を備えたことを特徴とするトーン調整切換回路。first and second tone adjustment circuits, a differential amplifier, and connector means connected to the second tone adjustment circuit;
A first change-over switch means that operates in conjunction with the connector means, and when the connector means is disconnected, the first change-over switch means operates between the input and output of the differential amplifier via the first change-over switch means. 1 tone adjustment circuit is connected or disconnected, and when the connector means is inserted, the first and 2
and second changeover switch means for connecting both of the tone adjustment circuits and the second tone adjustment circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1978081854U JPS5921536Y2 (en) | 1978-06-16 | 1978-06-16 | Tone adjustment switching circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1978081854U JPS5921536Y2 (en) | 1978-06-16 | 1978-06-16 | Tone adjustment switching circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54184045U JPS54184045U (en) | 1979-12-27 |
| JPS5921536Y2 true JPS5921536Y2 (en) | 1984-06-26 |
Family
ID=29002134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1978081854U Expired JPS5921536Y2 (en) | 1978-06-16 | 1978-06-16 | Tone adjustment switching circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5921536Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52113664A (en) * | 1976-03-19 | 1977-09-22 | Toshiba Corp | Amplifier circuit |
-
1978
- 1978-06-16 JP JP1978081854U patent/JPS5921536Y2/en not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52113664A (en) * | 1976-03-19 | 1977-09-22 | Toshiba Corp | Amplifier circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS54184045U (en) | 1979-12-27 |
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