KR890012472A - Hook monitoring alarm of telephone - Google Patents

Hook monitoring alarm of telephone Download PDF

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Publication number
KR890012472A
KR890012472A KR1019880000495A KR880000495A KR890012472A KR 890012472 A KR890012472 A KR 890012472A KR 1019880000495 A KR1019880000495 A KR 1019880000495A KR 880000495 A KR880000495 A KR 880000495A KR 890012472 A KR890012472 A KR 890012472A
Authority
KR
South Korea
Prior art keywords
resistor
diode
telephone
capacitor
monitoring alarm
Prior art date
Application number
KR1019880000495A
Other languages
Korean (ko)
Other versions
KR900008103B1 (en
Inventor
이경섭
Original Assignee
이경섭
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 이경섭 filed Critical 이경섭
Priority to KR1019880000495A priority Critical patent/KR900008103B1/en
Publication of KR890012472A publication Critical patent/KR890012472A/en
Application granted granted Critical
Publication of KR900008103B1 publication Critical patent/KR900008103B1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/08—Indicating faults in circuits or apparatus
    • H04M3/14—Signalling existence of persistent "off-hook" condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Alarm Systems (AREA)
  • Devices For Supply Of Signal Current (AREA)

Abstract

내용 없음.No content.

Description

전화기의 훅 감시 경보장치Hook monitoring alarm of telephone

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명의 회로도.1 is a circuit diagram of the present invention.

Claims (1)

입력측 전화선(Ll)(L2)에 연결한 다이오드(D1∼D4)는 브릿지 정류회로로 구성하고, 병렬로 구성한 제너다이오드(D5)와 전해 콘덴서(C1)는 저항(R1)을 연결하여 상기 다이오드(D2)와 (D4)와의 연결간에 접속되며, 그 일측은 다이오드(D1)와 (D3)와의 연결간에 접속되고, 또한, 상기 브릿지 정류회로에 연결한 콘덴서(C2)는 저항(R2)(R3)과 음성증폭기(3)에 연결되고 상시 음성증폭기(3)에 연결한 직류전압증폭기(4)는 병렬로 된 저항(R4)과 다이오드(D6)를 콩덴서(C3)에 연결하여 시간지연회로(5)와 연결되고, 멜로디 IC 또는 부저, 보이스 칩, 및 발광다이오드 등과 같은 신호검지소자(2)는 저항(R5)을 통하여 시간지연회로(5)에 연결되는 것을 특징으로 하는 전화기의 훅 감시 경보장치.The diodes D1 to D4 connected to the input side telephone line Ll (L2) are constituted by a bridge rectifier circuit, and the Zener diode D5 and the electrolytic capacitor C1 configured in parallel connect the resistor R1 to the diode ( It is connected between the connection between D2) and (D4), one side thereof is connected between the connection between diodes D1 and (D3), and the capacitor C2 connected to the bridge rectifier circuit is a resistor (R2) (R3). DC voltage amplifier (4) connected to the negative amplifier (3) and always connected to the voice amplifier (3) is connected to the resistor (R4) and diode (D6) in parallel to the capacitor (C3) time delay circuit ( 5), and the signal detecting element 2, such as a melody IC or a buzzer, a voice chip, and a light emitting diode, is connected to the time delay circuit 5 through the resistor R5. Device. ※참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: It is to be disclosed based on the initial application.
KR1019880000495A 1988-01-22 1988-01-22 Telephone hook alarming device KR900008103B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019880000495A KR900008103B1 (en) 1988-01-22 1988-01-22 Telephone hook alarming device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019880000495A KR900008103B1 (en) 1988-01-22 1988-01-22 Telephone hook alarming device

Publications (2)

Publication Number Publication Date
KR890012472A true KR890012472A (en) 1989-08-26
KR900008103B1 KR900008103B1 (en) 1990-10-31

Family

ID=19271669

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019880000495A KR900008103B1 (en) 1988-01-22 1988-01-22 Telephone hook alarming device

Country Status (1)

Country Link
KR (1) KR900008103B1 (en)

Also Published As

Publication number Publication date
KR900008103B1 (en) 1990-10-31

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