JPS6257458U - - Google Patents
Info
- Publication number
- JPS6257458U JPS6257458U JP14699185U JP14699185U JPS6257458U JP S6257458 U JPS6257458 U JP S6257458U JP 14699185 U JP14699185 U JP 14699185U JP 14699185 U JP14699185 U JP 14699185U JP S6257458 U JPS6257458 U JP S6257458U
- Authority
- JP
- Japan
- Prior art keywords
- microphone
- main body
- amplifier
- telephone
- public address
- 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
- 238000001514 detection method Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 1
Description
第１図は本考案の一実施例に係る拡声電話機の
斜視図、第２図はマイクの正面図、第３図はマイ
クの側面図、第４図はマイク内部の電気的ブロツ
ク図である。
４：拡声電話機本体、６：マイク、２４：アン
プ、３０：電流検出回路。
FIG. 1 is a perspective view of a loudspeaker telephone according to an embodiment of the present invention, FIG. 2 is a front view of a microphone, FIG. 3 is a side view of the microphone, and FIG. 4 is an electrical block diagram inside the microphone. 4: public address telephone main body, 6: microphone, 24: amplifier, 30: current detection circuit.
Claims (1)
り、該マイクを前記拡声電話機本体と着脱可能に
するとともに、前記マイクが拡声電話機本体に接
続された場合アンプのゲインを引き下げ、一方、
マイクが拡声電話機本体から取りはずされた場合
アンプのゲインを引き上げる着脱検出手段を前記
マイクに備えたことを特徴とする拡声電話機。 Consisting of a public address telephone main body and a microphone equipped with an amplifier, the microphone is detachable from the public address telephone main body, and when the microphone is connected to the public address telephone main body, the gain of the amplifier is reduced;
A loudspeaker telephone, characterized in that the microphone is equipped with attachment/detachment detection means for increasing the gain of an amplifier when the microphone is removed from the main body of the telephone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14699185U JPS6257458U (en) | 1985-09-26 | 1985-09-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14699185U JPS6257458U (en) | 1985-09-26 | 1985-09-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6257458U true JPS6257458U (en) | 1987-04-09 |
Family
ID=31059951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14699185U Pending JPS6257458U (en) | 1985-09-26 | 1985-09-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6257458U (en) |
-
1985
- 1985-09-26 JP JP14699185U patent/JPS6257458U/ja active Pending
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