KR880002349A - Interface circuit for pole and trunk line exchange of magnetic telephone - Google Patents

Interface circuit for pole and trunk line exchange of magnetic telephone Download PDF

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Publication number
KR880002349A
KR880002349A KR1019860005440A KR860005440A KR880002349A KR 880002349 A KR880002349 A KR 880002349A KR 1019860005440 A KR1019860005440 A KR 1019860005440A KR 860005440 A KR860005440 A KR 860005440A KR 880002349 A KR880002349 A KR 880002349A
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KR
South Korea
Prior art keywords
input
transistor
base
output terminal
transformer
Prior art date
Application number
KR1019860005440A
Other languages
Korean (ko)
Other versions
KR890004321B1 (en
Inventor
이근태
박종철
장성진
윤성표
Original Assignee
동양정밀공업 주식회사
권혁조
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.)
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Publication date
Application filed by 동양정밀공업 주식회사, 권혁조 filed Critical 동양정밀공업 주식회사
Priority to KR1019860005440A priority Critical patent/KR890004321B1/en
Publication of KR880002349A publication Critical patent/KR880002349A/en
Application granted granted Critical
Publication of KR890004321B1 publication Critical patent/KR890004321B1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M5/00—Manual exchanges

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Devices For Supply Of Signal Current (AREA)

Abstract

내용 없음No content

Description

자석식 전화기의 극, 간선교환용 인터페이스회로Interface circuit for pole and trunk line exchange of magnetic telephone

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

첨부도면은 본 발명의 회로도The accompanying drawings show the circuit diagram of the present invention.

Claims (1)

전화기와 연결된 단자(P1),(P2)와 일접점(a1),(b1)이 연결되고 이접점 (a2),(b2)을 통하여 링페너레이터 연결단자(RI1),(RI2)와 연결되어 콘트롤 IC(IC)의 입출력단자(PA7)(PB5)에서 엔드게이트(G)를 통하여 베이스가 연결된 트랜지스터 (TRO)의 클렉터에 연결된 릴레이 구동회로(Ry)에 의해 작동하는 릴레이 스위치 (A),(B)의 삼접점(a3),(b3)에서는 고주파통과 획터회로인 콘텐서(C) 저항(R)과 션트리미트회로인 제너다이모드(ZD1),(ZD2)를 통하여 트랜스(T)의 일차 코일과 연결하는 동시에 하이브리드 회로(D1),(D2)를 통하여 연산증폭기(OP1)의 양입력단자 (+),(-)로 입력시키며 이의 출력단에서 연산증폭기(OP2)의 반전입력단자 (-)로 입력시키고 궤환되는 연산증폭기(OP2)의 출력단의 출력단에서 인버어터(N)를 거쳐 간선과 극선의 전환스위치(SW)가 연결된 콘트롤 IC(IC)의 입력단자(PB5)로 연결하여, 트랜스(T)의 2차코일에서 각각 다이오드(D3),(D4)를 통하여 보이스 네트웩 연결단자(V1),(V2)로 연결하는 동시에 트랜지스터(TR3),(TR4)의 콜렉터로 연결하여 베이스로 인가전원 (Vcc) 이 입력되는 트랜지스터(TR3),(TR4)의 에미터는 접지시면서 콘트롤 IC(IC)의 출력단자(PA4)와 연결하는 동시에 트랜지스터(TR5)의 베이스와 연결하며, 에미터가 접지된 트랜지스터(TR5)의 콜렉터로 입력되는 인가전원(Vcc)을 트랜지스터 (TR1) (TR2)의 베이스로 연결하고 에미터가 접지된 트랜지스터(TR1)(TR2)의 코렉터와 트랜스(T)의 이차코일과 연결하여 구성한 자석식 전화기의 국, 간선 교환용 인터페이스 회로.Terminals (P 1 ), (P 2 ) connected to the telephone, and contacts (a 1 ) and (b 1 ) are connected, and ring generator connection terminals (RI 1 ) are connected through the contacts (a 2 ) and (b 2 ). Relay drive circuit Ry connected to the selector of transistor TRO connected to (RI 2 ) and connected to base via end gate G at input / output terminal PA 7 (PB 5 ) of control IC (IC) The three contact points (a 3 ) and (b 3 ) of the relay switches (A) and (B) operated by the high frequency pass-through capacitor (C) resistor (R) and zener die mode (ZD) as a shunt limit circuit 1 ), (ZD 2 ) are connected to the primary coil of the transformer (T) and at the same time both input terminals (+), (-) of the operational amplifier (OP 1 ) through the hybrid circuit (D 1 ), (D 2 ) sikimyeo input to the operational amplifier from its output terminal (OP 2) the inverting input terminal of the (-) via the inverter (N) at the output terminal of the output stage of the operational amplifier (OP 2) which is input and fed back to a change-over switch of the trunk and polar (SW ) Is connected Connected to the input terminal (PB 5) of the trawl IC (IC), in the secondary coil of the transformer (T), each diode (D 3), the voice network Wexford connection terminal (V 1) through (D 4), (V 2 ) The emitters of transistors TR 3 and TR 4 , which are connected to the collectors of transistors TR 3 and TR 4 , and the applied power supply Vcc is input to the base, are grounded and the control IC ) output terminal (PA 4), while connected to the transistor (and connected to the base of TR 5), the emitter is an applied power (Vcc) is input to the collector of the transistor (TR 5) grounded transistor (TR 1) of the ( TR 2 ) A station and trunk line interface circuit for a magnetic telephone, which is connected to the base of a transistor (TR 1 ) (TR 2 ) connected to the base of the emitter, and the secondary coil of the transformer (T). ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019860005440A 1986-07-05 1986-07-05 Interface circuit in exchange KR890004321B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019860005440A KR890004321B1 (en) 1986-07-05 1986-07-05 Interface circuit in exchange

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019860005440A KR890004321B1 (en) 1986-07-05 1986-07-05 Interface circuit in exchange

Publications (2)

Publication Number Publication Date
KR880002349A true KR880002349A (en) 1988-04-30
KR890004321B1 KR890004321B1 (en) 1989-10-30

Family

ID=19250953

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019860005440A KR890004321B1 (en) 1986-07-05 1986-07-05 Interface circuit in exchange

Country Status (1)

Country Link
KR (1) KR890004321B1 (en)

Also Published As

Publication number Publication date
KR890004321B1 (en) 1989-10-30

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