JPS62127155U - - Google Patents
Info
- Publication number
- JPS62127155U JPS62127155U JP1280886U JP1280886U JPS62127155U JP S62127155 U JPS62127155 U JP S62127155U JP 1280886 U JP1280886 U JP 1280886U JP 1280886 U JP1280886 U JP 1280886U JP S62127155 U JPS62127155 U JP S62127155U
- Authority
- JP
- Japan
- Prior art keywords
- transmission line
- output circuit
- transmits
- constant current
- utility
- 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
Landscapes
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
Description
添付の図面は、本考案の１実施例に係わるイン
ターホン装置の通話回路の概略を示す電気回路図
である。
１：親機、２：子機、３：伝送線、４：マイク
ロホン、５：増幅器、６：トランジスタ、７：抵
抗、８：スピーカ。
The accompanying drawing is an electrical circuit diagram schematically showing a communication circuit of an intercom device according to an embodiment of the present invention. 1: Base unit, 2: Child unit, 3: Transmission line, 4: Microphone, 5: Amplifier, 6: Transistor, 7: Resistor, 8: Speaker.
Claims (1)
に、該伝送線に接続された音声増幅器の出力回路
を定電流出力回路にしたことを特徴とするインタ
ーホン装置の通話回路。 1. A communication circuit for an intercom device, which transmits and receives audio signals via a transmission line, and further comprises a constant current output circuit as an output circuit of an audio amplifier connected to the transmission line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1280886U JPS62127155U (en) | 1986-01-31 | 1986-01-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1280886U JPS62127155U (en) | 1986-01-31 | 1986-01-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62127155U true JPS62127155U (en) | 1987-08-12 |
Family
ID=30801281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1280886U Pending JPS62127155U (en) | 1986-01-31 | 1986-01-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62127155U (en) |
-
1986
- 1986-01-31 JP JP1280886U patent/JPS62127155U/ja active Pending
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