JPH0544971Y2 - - Google Patents
Info
- Publication number
- JPH0544971Y2 JPH0544971Y2 JP1984126486U JP12648684U JPH0544971Y2 JP H0544971 Y2 JPH0544971 Y2 JP H0544971Y2 JP 1984126486 U JP1984126486 U JP 1984126486U JP 12648684 U JP12648684 U JP 12648684U JP H0544971 Y2 JPH0544971 Y2 JP H0544971Y2
- Authority
- JP
- Japan
- Prior art keywords
- microphone
- changeover switches
- changeover
- series
- contact
- 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 - Lifetime
Links
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Keying Circuit Devices (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
この考案は、マイクロホンの出力信号を開閉す
るためのスイツチ回路に関する。[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a switch circuit for opening and closing the output signal of a microphone.
（従来の技術）
従来、第３図に示すように、マイクロホン１０
の不使用時には増幅器２７の入力端子１２，１３
を短絡または小さなインピーダンスで接続するこ
とにより、外来ノイズの混入を防止するようにし
たものがあつた（例えば、実開昭52−132030号公
報参照）。(Prior Art) Conventionally, as shown in FIG.
When not in use, the input terminals 12 and 13 of the amplifier 27
Some devices prevent the ingress of external noise by short-circuiting or connecting with small impedance (see, for example, Japanese Utility Model Application Publication No. 132030/1983).
（考案が解決しようとする課題）
ところが、１台のマイクロホン１０の信号の入
切を複数の切替スイツチ１１，３４，３５により
行ないたい場合がある。この場合、第３図に示し
た構成に、単に他の切替スイツチ３４，３５を並
列に接続しただけでは第４図に示す様な構成とな
り、いずれかの切替スイツチ１１，３４，３５を
閉成しても増幅器２７の入力端子１２，１３は短
絡されたままになる。(Problem to be Solved by the Invention) However, there are cases where it is desired to turn on and off the signal of one microphone 10 using a plurality of changeover switches 11, 34, and 35. In this case, simply connecting the other changeover switches 34 and 35 in parallel to the configuration shown in FIG. 3 results in a configuration as shown in FIG. However, the input terminals 12 and 13 of the amplifier 27 remain short-circuited.
従つて、第５図に示すような、マイクロホン１
０不使用時には増幅器２７の入力端子１２，１３
が開放状態となるスイツチ回路を用いるしかな
く、外来ノイズの問題は解決されなかつた。 Therefore, the microphone 1 as shown in FIG.
When 0 is not used, the input terminals 12 and 13 of the amplifier 27
The only option was to use a switch circuit in which the switch was in an open state, and the problem of external noise remained unsolved.
この考案は、前記従来の問題点を解決するため
に成されたもので、外来ノイズを防ぎ、しかも複
数箇所に設けられた複数のスイツチによりマイク
ロホンの信号の入切をすることができるようなマ
イクロホンのスイツチ回路を提供することを目的
としている。 This idea was made in order to solve the above-mentioned conventional problems, and it is a microphone that prevents external noise and can also turn microphone signals on and off using multiple switches installed at multiple locations. The purpose is to provide a switch circuit.
（課題を解決するための手段）
前記目的を達成するため、この考案によるマイ
クロホンのスイツチ回路は、マイクロホンと複数
の１回路２接点の切替スイツチと出力端子とを有
し、前記複数の切替スイツチは可動接点と一方の
固定接点とが接続されることにより直列に接続さ
れ、前記直列に接続された複数の切り替えスイツ
チのうちの一端に位置し、その可動接点が他の切
替スイツチの固定接点に接続されない切替スイツ
チの当該可動接点は出力端子の一方に接続され、
前記直列に接続された複数の切替スイツチのうち
の他端に位置し、そのいずれの固定接点もが他の
切替スイツチの可動接点に接続されない切替スイ
ツチの一方の固定接点はマイクロホンからの一方
の引出線に接続され、マイクロホンからの前記一
方の引出線は出力端子の他方に接続され、前記直
列に接続された複数の切替スイツチの他方の固定
接点はマイクロホンからの他方の引出線に接続さ
れてなることにより構成されている。(Means for Solving the Problems) In order to achieve the above object, a microphone switch circuit according to this invention includes a microphone, a plurality of one-circuit, two-contact changeover switches, and an output terminal, and the plurality of changeover switches are The movable contact and one fixed contact are connected in series, and the movable contact is located at one end of the plurality of changeover switches connected in series, and the movable contact is connected to the fixed contact of another changeover switch. The movable contact of the selector switch that is not connected is connected to one of the output terminals,
One fixed contact of the changeover switch, which is located at the other end of the plurality of changeover switches connected in series, and whose fixed contact is not connected to the movable contact of the other changeover switch, is connected to one of the drawers from the microphone. one lead-out line from the microphone is connected to the other output terminal, and the other fixed contact of the plurality of series-connected changeover switches is connected to the other lead-out line from the microphone. It is composed of:
（作用）
このように構成されているので、マイクロホン
不使用時には増幅器の入力端子は短絡状態とな
る。そして、いずれかの切替スイツチが閉成され
ることによりマイクロホンの出力信号は出力端子
に送出される。(Function) With this configuration, the input terminal of the amplifier is short-circuited when the microphone is not in use. Then, when one of the changeover switches is closed, the output signal of the microphone is sent to the output terminal.
（実施例）
以下、図面に示す実施例に基づいて、本考案を
詳細に説明する。(Example) Hereinafter, the present invention will be described in detail based on an example shown in the drawings.
第１図に示すように、切り替えスイツチ１１，
３４，３５は一方の固定端子１６，２８，３１と
可動接点２３，３０，３３が接続されることによ
り直列に接続されている。 As shown in FIG.
34 and 35 are connected in series by connecting one of the fixed terminals 16, 28, 31 and the movable contacts 23, 30, 33.
切り替えスイツチ１１の一方の固定端子１６は
マイクロホン１０からの一方の引出線１４に接続
されており、切替スイツチ３５の可動接点３３
は、出力端子１３を介して増幅器２７の入力端子
の一方に接続されている。また、マイクロホン１
０からの一方の引出線１４は出力端子１２を介し
て増幅器２７の入力端子のもう一方に接続されて
いる。 One fixed terminal 16 of the changeover switch 11 is connected to one lead wire 14 from the microphone 10, and the movable contact 33 of the changeover switch 35
is connected to one of the input terminals of the amplifier 27 via the output terminal 13. Also, microphone 1
One lead line 14 from 0 is connected to the other input terminal of the amplifier 27 via the output terminal 12.
切り替えスイツチ１１，３４，３５の他方の固
定接点１７，２９，３２はマイクロホン１０から
の他方の引き出し線１５に並列に接続されてい
る。 The other fixed contacts 17, 29, 32 of the changeover switches 11, 34, 35 are connected in parallel to the other lead wire 15 from the microphone 10.
これにより、いずれかの切替スイツチ１１，３
４，３５がONの状態とされると、マイクロホン
１０の出力信号は増幅器２７の入力端子１２，１
３に送出され、増幅器２７の入力端子が短絡され
ることはない。また、いずれの切替スイツチ１
１，３４，３５もが開放されていれば、増幅器２
７の入力端子は短絡され、外来ノイスが混入する
ことはない。 As a result, either the changeover switch 11 or 3
4 and 35 are in the ON state, the output signal of the microphone 10 is input to the input terminals 12 and 1 of the amplifier 27.
3, and the input terminal of amplifier 27 is not short-circuited. Also, which selector switch 1
If 1, 34, and 35 are also open, amplifier 2
The input terminal No. 7 is short-circuited so that no external noise is mixed in.
放送サービスエリア毎に設置されたスピーカ２
４，２５，２６を選択スイツチで操作するために
は、第２図に示すように２回路２接点の連動する
切替スイツチ１８を例えば３個従属に接続すれば
よい。放送サービスエリア選択用のメーク接点信
号は、共通端子１９と第１〜３端子２０〜２２と
の間に出力される。 Speaker 2 installed in each broadcast service area
In order to operate 4, 25, and 26 with a selection switch, for example, three interlocking changeover switches 18 having two circuits and two contacts may be connected as shown in FIG. A make contact signal for selecting a broadcast service area is output between the common terminal 19 and the first to third terminals 20 to 22.
（効果）
上述のように、この考案によれば、複数の切り
替えスイツチのうち、いずれの切替スイツチを閉
成することによつてもマイクロホンの出力信号を
増幅器に送出することができ、しかも、マイクロ
ホン不使用時には外来ノイズ混入を防止できる。(Effects) As described above, according to this invention, the output signal of the microphone can be sent to the amplifier by closing any one of the plurality of changeover switches. When not in use, external noise can be prevented from entering.
第１図は本考案を実施したマイクロホンのスイ
ツチ回路の回路図、第２図は他の実施例を示す回
路図、第３図、第４図および第５図は従来例を示
す回路図である。
１０……マイクロホン、１１，１８，３４，３
５……切替スイツチ、１２，１３……出力端子、
１４，１５……引出線、１６，１７，２８，２
９，３１，３２……固定接点、２３，３０，３３
……可動接点。
Fig. 1 is a circuit diagram of a microphone switch circuit implementing the present invention, Fig. 2 is a circuit diagram showing another embodiment, and Figs. 3, 4, and 5 are circuit diagrams showing conventional examples. . 10...Microphone, 11, 18, 34, 3
5... Selector switch, 12, 13... Output terminal,
14, 15... Leader line, 16, 17, 28, 2
9, 31, 32...Fixed contact, 23, 30, 33
...Movable contact.
Claims (1)
ツチと出力端子とを有し、前記複数の切替スイツ
チは可動接点と一方の固定接点とが接続されるこ
とにより直列に接続され、前記直列に接続された
複数の切り替えスイツチのうちの一端に位置し、
その可動接点が他の切替スイツチの固定接点に接
続されない切替スイツチの当該可動接点は出力端
子の一方に接続され、前記直列に接続された複数
の切替スイツチのうちの他端に位置し、そのいず
れの固定接点もが他の切替スイツチの可動接点に
接続されない切替スイツチの一方の固定接点はマ
イクロホンから一方の引出線に接続され、マイク
ロホンからの前記一方の引出線は出力端子の他方
に接続され、前記直列に接続された複数の切替ス
イツチの他方の固定接点はマイクロホンからの他
方の引出線に接続されてなるマイクロホンのスイ
ツチ回路。 It has a microphone, a plurality of one-circuit, two-contact changeover switches, and an output terminal, and the plurality of changeover switches are connected in series by connecting a movable contact and one fixed contact, and the plurality of changeover switches are connected in series by connecting a movable contact and one fixed contact. Located at one end of multiple changeover switches,
The movable contact of a changeover switch whose movable contact is not connected to the fixed contact of another changeover switch is connected to one of the output terminals, is located at the other end of the plurality of changeover switches connected in series, and is located at the other end of the plurality of changeover switches connected in series. One fixed contact of the changeover switch whose fixed contact is not connected to the movable contact of the other changeover switch is connected to one lead-out line from the microphone, and said one lead-out line from the microphone is connected to the other of the output terminals, A microphone switch circuit, wherein the other fixed contact of the plurality of changeover switches connected in series is connected to the other lead wire from the microphone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12648684U JPS6142027U (en) | 1984-08-20 | 1984-08-20 | Microphone switch circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12648684U JPS6142027U (en) | 1984-08-20 | 1984-08-20 | Microphone switch circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6142027U JPS6142027U (en) | 1986-03-18 |
| JPH0544971Y2 true JPH0544971Y2 (en) | 1993-11-16 |
Family
ID=30685162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12648684U Granted JPS6142027U (en) | 1984-08-20 | 1984-08-20 | Microphone switch circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6142027U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4929785U (en) * | 1972-06-16 | 1974-03-14 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52132030U (en) * | 1976-04-01 | 1977-10-07 |
-
1984
- 1984-08-20 JP JP12648684U patent/JPS6142027U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4929785U (en) * | 1972-06-16 | 1974-03-14 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6142027U (en) | 1986-03-18 |
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