JPH024313U - - Google Patents
Info
- Publication number
- JPH024313U JPH024313U JP8014188U JP8014188U JPH024313U JP H024313 U JPH024313 U JP H024313U JP 8014188 U JP8014188 U JP 8014188U JP 8014188 U JP8014188 U JP 8014188U JP H024313 U JPH024313 U JP H024313U
- Authority
- JP
- Japan
- Prior art keywords
- gain
- amplifier
- microphone
- switching signal
- switching
- 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.)
- Granted
Links
- 230000005236 sound signal Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Control Of Amplification And Gain Control (AREA)
- Transmitters (AREA)
Description
第１図は本考案の原理構成を示すブロツク図、
第２図は本考案の一実施例を示すブロツク図、第
３図は本考案の一実施例の詳細を示す回路図、第
４図は本考案の一適用例を示す回路図、第５図は
従来の利得切替手段を示す回路図である。
１……第１のマイク、２……第２のマイク、１
０……アンプ、３０……利得切替手段、３１……
利得切替スイツチ、３２……ソケツト部、３３…
…第１のプラグ部、３４……第２のプラグ部、３
５……トランジスタ。
Figure 1 is a block diagram showing the principle configuration of the present invention.
Fig. 2 is a block diagram showing an embodiment of the invention, Fig. 3 is a circuit diagram showing details of an embodiment of the invention, Fig. 4 is a circuit diagram showing an example of application of the invention, and Fig. 5. 1 is a circuit diagram showing a conventional gain switching means. 1...First microphone, 2...Second microphone, 1
0...Amplifier, 30...Gain switching means, 31...
Gain changeover switch, 32...Socket section, 33...
...First plug part, 34...Second plug part, 3
5...transistor.
補正 平１．２．１５
実用新案登録請求の範囲を次のように補正する
。Amendment 1.2.15. The scope of claims for utility model registration is amended as follows.
【実用新案登録請求の範囲】
第１または第２のマイク１，２からの音声信号
を増幅するアンプ１０と、前記第１または第２の
マイク１，２に応じてアンプ１０の利得を切り替
える利得切替手段とを有してなる利得切替可能な
増幅回路であつて、前記利得切替手段は
前記アンプ１０に設ける利得切替スイツチ３１
と、該利得切替スイツチ３１に設け、該利得切替
スイツチ３１を動作させる切替信号の入力および
出力のための切替信号入力端子Ａおよび出力端子
Ｂをそれぞれ有するソケツト部３２と、
該ソケツト部３２と択一的に嵌合しかつ前記第
１または第２のマイク１，２にそれぞれ設ける第
１または第２のプラグ部３３，３４とからなる利
得切替手段３０であり、
前記第１または第２のプラグ部３３，３４にお
いて、前記切替信号入力端子Ａおよび出力端子Ｂ
の間をそれぞれ開放または短絡することを特徴と
する利得切替形増幅回路。[Claims for Utility Model Registration] An amplifier 10 that amplifies the audio signal from the first or second microphone 1 or 2, and a gain that switches the gain of the amplifier 10 depending on the first or second microphone 1 or 2. a gain switchable amplifier circuit comprising: a gain switch 31 provided in the amplifier 10;
and a socket part 32 provided in the gain changeover switch 31 and having a switching signal input terminal A and an output terminal B, respectively, for inputting and outputting a switching signal for operating the gain changeover switch 31; A gain switching means 30 comprising a first or second plug portion 33, 34 that is integrally fitted and provided on the first or second microphone 1, 2, respectively, and the first or second plug In the sections 33 and 34, the switching signal input terminal A and the output terminal B
A gain switching type amplifier circuit characterized by opening or shorting between the two.
Claims (1)
を増幅するアンプ１０と、前記第１または第２の
マイク１，２に応じてアンプ１０の利得を切り替
える利得切替手段とを有してなる利得切替可能な
増幅回路であつて、前記利得切替手段は 前記アンプ１０に設ける利得切替スイツチ３１
と、該利得切替スイツチ３１に設け、該利得切替
スイツチ３１を動作させる切替信号の入力および
出力のための切替信号入力端子Ａおよび出力端子
Ｂをそれぞれ有するソケツト部３１と、 該ソケツト部３２と択一的に嵌合しかつ前記第
１または第２のマイク１，２にそれぞれ設ける第
１または第２のプラグ部３３，３４とからなる利
得切替手段３０であり、 前記第１または第２のプラグ部３３，３４にお
いて、前記切替信号入力端子Ａおよび出力端子Ｂ
の間をそれぞれ開放または短絡することを特徴と
する利得切替形増幅回路。[Claims for Utility Model Registration] An amplifier 10 that amplifies the audio signal from the first or second microphone 1 or 2, and a gain that switches the gain of the amplifier 10 depending on the first or second microphone 1 or 2. a gain switchable amplifier circuit comprising: a gain switch 31 provided in the amplifier 10;
and a socket part 31 provided in the gain changeover switch 31 and having a switching signal input terminal A and an output terminal B, respectively, for inputting and outputting a switching signal for operating the gain changeover switch 31, and the socket part 32. A gain switching means 30 comprising a first or second plug portion 33, 34 that is integrally fitted and provided on the first or second microphone 1, 2, respectively, and the first or second plug In the sections 33 and 34, the switching signal input terminal A and the output terminal B
A gain switching type amplifier circuit characterized by opening or shorting between the two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988080141U JPH066605Y2 (en) | 1988-06-18 | 1988-06-18 | Gain switching type amplifier circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988080141U JPH066605Y2 (en) | 1988-06-18 | 1988-06-18 | Gain switching type amplifier circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH024313U true JPH024313U (en) | 1990-01-11 |
| JPH066605Y2 JPH066605Y2 (en) | 1994-02-16 |
Family
ID=31304982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988080141U Expired - Lifetime JPH066605Y2 (en) | 1988-06-18 | 1988-06-18 | Gain switching type amplifier circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH066605Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5494145U (en) * | 1977-12-15 | 1979-07-03 | ||
| JPS6273616U (en) * | 1985-10-29 | 1987-05-12 |
-
1988
- 1988-06-18 JP JP1988080141U patent/JPH066605Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5494145U (en) * | 1977-12-15 | 1979-07-03 | ||
| JPS6273616U (en) * | 1985-10-29 | 1987-05-12 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH066605Y2 (en) | 1994-02-16 |