JPH0397255U - - Google Patents
Info
- Publication number
- JPH0397255U JPH0397255U JP460790U JP460790U JPH0397255U JP H0397255 U JPH0397255 U JP H0397255U JP 460790 U JP460790 U JP 460790U JP 460790 U JP460790 U JP 460790U JP H0397255 U JPH0397255 U JP H0397255U
- Authority
- JP
- Japan
- Prior art keywords
- contact
- full
- circuit
- wave rectifier
- central office
- 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
- 238000001514 detection method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
Description
第１図は本考案の一実施例による局線回路の構
成を示す回路図、第２図は従来の局線回路の構成
を示す回路図である。
ＯＬ……局線、ｒｖ１……第１の接点、ＲＥＣ
……全波整流器、ｒｖ２……第２の接点、３１…
…ダイヤル信号送出／直流ループ形成回路、５０
……第１のバイパス回路、６０……呼出信号／極
性反転検出回路、７０……第２のバイパス回路。
FIG. 1 is a circuit diagram showing the configuration of a station line circuit according to an embodiment of the present invention, and FIG. 2 is a circuit diagram showing the configuration of a conventional station line circuit. OL...Station line, rv 1 ...First contact, REC
...Full wave rectifier, rv 2 ...Second contact, 31...
...Dial signal sending/DC loop forming circuit, 50
. . . first bypass circuit, 60 . . . calling signal/polarity reversal detection circuit, 70 . . . second bypass circuit.
Claims (1)
と、該局線間に印加される電圧の極性反転の検出
と、該局線へのダイヤル信号送出と、該局線の直
流ループの形成とを行う局線回路において、 前記局線間に常開の第１の接点を介して接続さ
れた全波整流器と、前記常開接点をバイパスして
交流を通す第１のバイパス回路と、前記全波整流
器の出力の一端に固定端子が接続された第２の接
点と、前記全波整流器の出力間に前記第２の接点
の常閉端子を介して接続され、前記呼出信号の検
出と前記極性反転の検出の両方を行う呼出信号／
極性反転検出回路と、前記第１の接点と前記全波
整流器との第１の接続点と前記第２の接点の常閉
端子と前記検出回路との第２接続点との間をバイ
パスし、直流を通す第２のバイパス回路と、前記
全波整流器の出力間に前記第２の接点の常開端子
を介して接続され、前記ダイヤル信号送出と前記
直流ループの形成とを行うダイヤル信号送出／直
流ループ形成回路とを有する局線回路。[Claims for Utility Model Registration] Connected to a central office line, detecting a calling signal from the central office line, detecting polarity reversal of the voltage applied between the central office lines, and sending a dialing signal to the central office line. , a full-wave rectifier connected between the station lines via a normally open first contact; A first bypass circuit for passing through the circuit, a second contact having a fixed terminal connected to one end of the output of the full-wave rectifier, and a connection between the output of the full-wave rectifier via a normally closed terminal of the second contact. and detecting both the calling signal and the polarity reversal.
Bypassing between a polarity reversal detection circuit, a first connection point between the first contact and the full-wave rectifier, and a second connection point between the normally closed terminal of the second contact and the detection circuit; A dial signal transmitter connected between a second bypass circuit that passes direct current and the output of the full-wave rectifier via a normally open terminal of the second contact, and that transmits the dial signal and forms the DC loop. A station line circuit having a DC loop forming circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP460790U JPH0733472Y2 (en) | 1990-01-24 | 1990-01-24 | Local line circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP460790U JPH0733472Y2 (en) | 1990-01-24 | 1990-01-24 | Local line circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0397255U true JPH0397255U (en) | 1991-10-07 |
| JPH0733472Y2 JPH0733472Y2 (en) | 1995-07-31 |
Family
ID=31508344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP460790U Expired - Lifetime JPH0733472Y2 (en) | 1990-01-24 | 1990-01-24 | Local line circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0733472Y2 (en) |
-
1990
- 1990-01-24 JP JP460790U patent/JPH0733472Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0733472Y2 (en) | 1995-07-31 |
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