JPS62151252U - - Google Patents
Info
- Publication number
- JPS62151252U JPS62151252U JP3873986U JP3873986U JPS62151252U JP S62151252 U JPS62151252 U JP S62151252U JP 3873986 U JP3873986 U JP 3873986U JP 3873986 U JP3873986 U JP 3873986U JP S62151252 U JPS62151252 U JP S62151252U
- Authority
- JP
- Japan
- Prior art keywords
- communication line
- voltage
- telephone
- theft
- voice
- 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
- 238000012544 monitoring process Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Burglar Alarm Systems (AREA)
Description
第１図は本考案の１実施例のブロツク図、第２
図は各部の電圧関係を示す図、第３図は電話機の
回路構成の例を示すブロツク図である。
１……フツクスイツチ、２……ベル回路、３…
…ハイブリツドコイル、４……ダイアル回路、５
……送話器、６……平衡回路、７……受話器、８
……演算増幅器、９……ブザー、１０……電話機
回路、１１……内臓電池、１２……全波整流器。
Figure 1 is a block diagram of one embodiment of the present invention;
The figure is a diagram showing the voltage relationship of each part, and FIG. 3 is a block diagram showing an example of the circuit configuration of the telephone. 1...Hook switch, 2...Bell circuit, 3...
...Hybrid coil, 4...Dial circuit, 5
...Telephone, 6...Balanced circuit, 7...Telephone receiver, 8
... operational amplifier, 9 ... buzzer, 10 ... telephone circuit, 11 ... built-in battery, 12 ... full-wave rectifier.
Claims (1)
信回線に接続される２線間の直流電圧を監視して
いる該電圧が消滅したとき音響または音声を発生
する手段を設けたことを特徴とする盗難防止型電
話機。 A telephone used by being connected to a communication line, characterized in that it is equipped with means for monitoring the DC voltage between two wires connected to the communication line and generating sound or voice when the voltage disappears. Anti-theft phone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3873986U JPS62151252U (en) | 1986-03-17 | 1986-03-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3873986U JPS62151252U (en) | 1986-03-17 | 1986-03-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62151252U true JPS62151252U (en) | 1987-09-25 |
Family
ID=30851262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3873986U Pending JPS62151252U (en) | 1986-03-17 | 1986-03-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62151252U (en) |
-
1986
- 1986-03-17 JP JP3873986U patent/JPS62151252U/ja active Pending