JPS6115864U - Telephone line connection circuit - Google Patents

Telephone line connection circuit

Info

Publication number
JPS6115864U
JPS6115864U JP9685784U JP9685784U JPS6115864U JP S6115864 U JPS6115864 U JP S6115864U JP 9685784 U JP9685784 U JP 9685784U JP 9685784 U JP9685784 U JP 9685784U JP S6115864 U JPS6115864 U JP S6115864U
Authority
JP
Japan
Prior art keywords
telephone line
line connection
connection circuit
switching
parallel
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
Application number
JP9685784U
Other languages
Japanese (ja)
Other versions
JPH0317495Y2 (en
Inventor
泰治 佐藤
隆 佐伯
Original Assignee
株式会社東芝
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 株式会社東芝 filed Critical 株式会社東芝
Priority to JP9685784U priority Critical patent/JPS6115864U/en
Publication of JPS6115864U publication Critical patent/JPS6115864U/en
Application granted granted Critical
Publication of JPH0317495Y2 publication Critical patent/JPH0317495Y2/ja
Granted legal-status Critical Current

Links

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本考案の一実施例を示す電話回線切替回路の回
路図、第２図および第３図はそれぞれ従来の電話回線切
替回路の一例を示す回路図である。 １・・・負荷、５，６・・・スイッチングトランジスタ
、７，訃・・ダイオード、９・・・ダイオードブリッジ
、１０・・・入力スイッチ、１１・・・制御回路、１２
，１３・・・制御用トランジスタ、１４，１５，１６，
１７・・・抵抗、Ｉ−’ｉｔ Ｌ２・・・電話回線。FIG. 1 is a circuit diagram of a telephone line switching circuit showing an embodiment of the present invention, and FIGS. 2 and 3 are circuit diagrams showing examples of conventional telephone line switching circuits, respectively. DESCRIPTION OF SYMBOLS 1... Load, 5, 6... Switching transistor, 7, Diode, 9... Diode bridge, 10... Input switch, 11... Control circuit, 12
, 13...control transistor, 14, 15, 16,
17...Resistance, I-'it L2...Telephone line.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 互いに逆方向に回線電流を導通させ得るスイッチングト
ランジスタを電話回線に直列に接続するとともに、該各
スイッチングトランジスタと並列に、当該スイッチング
トランジスタの導通方向と．逆方向に電流を導通するダ
イオードをそれぞれ接続し、更に前記電話回線に並列に
接続されるダイオードブリッジを設け、当該ダイオード
ブリッジによる整流電流によって前誉己スイッチングト
ランジスタを動作するようにしたことを特徴とする電話
回線切替回路。Switching transistors capable of conducting line currents in opposite directions are connected in series to the telephone line, and are connected in parallel to each switching transistor in the conduction direction of the switching transistors. Diodes that conduct current in opposite directions are connected to each other, and a diode bridge is further connected in parallel to the telephone line, and the switching transistor is operated by the rectified current by the diode bridge. telephone line switching circuit.
JP9685784U 1984-06-29 1984-06-29 Telephone line connection circuit Granted JPS6115864U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9685784U JPS6115864U (en) 1984-06-29 1984-06-29 Telephone line connection circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9685784U JPS6115864U (en) 1984-06-29 1984-06-29 Telephone line connection circuit

Publications (2)

Publication Number Publication Date
JPS6115864U true JPS6115864U (en) 1986-01-29
JPH0317495Y2 JPH0317495Y2 (en) 1991-04-12

Family

ID=30656374

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9685784U Granted JPS6115864U (en) 1984-06-29 1984-06-29 Telephone line connection circuit

Country Status (1)

Country Link
JP (1) JPS6115864U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63106415U (en) * 1986-12-29 1988-07-09
JPH0742627U (en) * 1993-12-30 1995-08-11 プランサービス株式会社 Veterinary operating table

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63106415U (en) * 1986-12-29 1988-07-09
JPH0742627U (en) * 1993-12-30 1995-08-11 プランサービス株式会社 Veterinary operating table

Also Published As

Publication number Publication date
JPH0317495Y2 (en) 1991-04-12

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