JPS6356809U - - Google Patents
Info
- Publication number
- JPS6356809U JPS6356809U JP15115686U JP15115686U JPS6356809U JP S6356809 U JPS6356809 U JP S6356809U JP 15115686 U JP15115686 U JP 15115686U JP 15115686 U JP15115686 U JP 15115686U JP S6356809 U JPS6356809 U JP S6356809U
- Authority
- JP
- Japan
- Prior art keywords
- microphone
- conductive state
- muting transistor
- plug
- jack
- 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
- 238000010586 diagram Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
Description
第１図は本考案実施例の回路図、第２図は従来
の回路図である。
１……マイクジヤツク、２……マイクエコーア
ンプ、５……ミユーテイング用トランジスタ、６
……スイツチ、１０……電源スイツチ、１１……
コンデンサ。
FIG. 1 is a circuit diagram of an embodiment of the present invention, and FIG. 2 is a conventional circuit diagram. 1... Microphone jack, 2... Microphone echo amplifier, 5... Muting transistor, 6
...Switch, 10...Power switch, 11...
capacitor.
Claims (1)
用トランジスタを接続し、マイクジヤツクに対す
るマイクプラグの接続に連動して切換えられ前記
ミユーテイング用トランジスタを導通状態から非
導通状態に反転させるスイツチを設け、前記マイ
クジヤツクにマイクプラグが接続された状態でマ
イクエコーアンプに電源が投入された時前記ミユ
ーテイング用トランジスタを瞬時だけ導通状態に
反転させる回路を設けたことを特徴とするマイク
信号線路の制御回路。 A muting transistor is connected to the output side of the microphone echo amplifier, and a switch is provided which is switched in conjunction with the connection of the microphone plug to the microphone jack to invert the muting transistor from a conductive state to a non-conductive state, and the microphone plug is connected to the microphone jack. A control circuit for a microphone signal line, comprising a circuit that momentarily turns the muting transistor into a conductive state when power is turned on to the microphone echo amplifier in a connected state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15115686U JPS6356809U (en) | 1986-10-01 | 1986-10-01 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15115686U JPS6356809U (en) | 1986-10-01 | 1986-10-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6356809U true JPS6356809U (en) | 1988-04-15 |
Family
ID=31067969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15115686U Pending JPS6356809U (en) | 1986-10-01 | 1986-10-01 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6356809U (en) |
-
1986
- 1986-10-01 JP JP15115686U patent/JPS6356809U/ja active Pending