KR890013889A - Startup Circuit of Initial Voltage Variable Ringer Line Integrated Circuits - Google Patents

Startup Circuit of Initial Voltage Variable Ringer Line Integrated Circuits Download PDF

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Publication number
KR890013889A
KR890013889A KR1019880001557A KR880001557A KR890013889A KR 890013889 A KR890013889 A KR 890013889A KR 1019880001557 A KR1019880001557 A KR 1019880001557A KR 880001557 A KR880001557 A KR 880001557A KR 890013889 A KR890013889 A KR 890013889A
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KR
South Korea
Prior art keywords
transistor
resistor
current path
initial voltage
resistors
Prior art date
Application number
KR1019880001557A
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Korean (ko)
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KR910000215B1 (en
Inventor
김원영
Original Assignee
강진구
삼성반도체통신 주식회사
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Application filed by 강진구, 삼성반도체통신 주식회사 filed Critical 강진구
Priority to KR1019880001557A priority Critical patent/KR910000215B1/en
Publication of KR890013889A publication Critical patent/KR890013889A/en
Application granted granted Critical
Publication of KR910000215B1 publication Critical patent/KR910000215B1/en

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Classifications

    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03KPULSE TECHNIQUE
    • H03K17/00Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/56Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
    • H03K17/60Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being bipolar transistors

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  • Control Of Electrical Variables (AREA)
  • Direct Current Feeding And Distribution (AREA)

Abstract

내용 없음.No content.

Description

초기전압 가변링거선형 집적회로의 스타트업 회로Startup Circuit of Initial Voltage Variable Ringer Line Integrated Circuits

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

제1도는 링거선형 집적회로의 블럭도,1 is a block diagram of a ringer linear integrated circuit,

제2도는 히스테리시스 특성 회로부의 상세 블럭도,2 is a detailed block diagram of a hysteresis characteristic circuit portion;

제4도는 본 발명의 회로도.4 is a circuit diagram of the present invention.

Claims (1)

링거 선형 집적회로에 있어서, 입력단자(IP)와 접지사이에 직렬접속되어 입력단자(IP)를 통해 인가되는 전원전압의 전류를 통과시키기 위한 제1전류통로로 작용하는 세개의 저항(R1-R3)와, 상기 저항들중 두 저항(R1, R2)사이의 접속점(A)에 에미터를 접속하여 저항(R2)에 인가되는 전압 즉 전원전압을 분압한 초기전압을 콜렉터를 통해 외부로 전송하기 위한 스위칭 작용을 하는 제1트랜지스터(Q1)과, 상기 입력단자(IP)의 전원전압을 제1트랜지스터(Q1)의 베이스에 인가되는 저항(R4)와, 상기 제1트랜지스터(Q1)의 베이스와 상기 제1전류통로중 두 저항(R2, R3)사이의 접합점(B)에 접속되어 상기 제1트랜지스터(Q1)을 제어하기위해 상기 저항(R4)와 함께 제2전류통로를 구성하는 제너다이오드(D1)과, 상기 접속점(B)에 콜렉터를 접지에 에미터를 접속하여 상기 제2전류통로를 제어하기 위해 스위치 작용을 하는 제2트랜지스터(Q2)와, 상기 제1전류통로중 접속점(A)와 저항(R2)사이에 접속되어 제1전류통로의 전류에 검출하여 상기 제2트랜지스터(Q2) 통하여 상기 제 2 트랜지스터를 동작하기 위한 수단으로 작용하는 전류 검출 회로와, 상기 제 2 트랜지스터(Q2)의 베이스에 콜렉터를 그리고 접지에 에미터를 접속하여 외부로부터 베이스에 인가되는 정전압에 의해 동작상태에 있는 상기 제2트랜지스터(Q2)를 오프시키기 위한 수단으로 작용하는 제1스위칭회로와, 상기 제1전류통로중 저항(R1)과 병렬접속되어 제1트랜지스터(Q1)에 통해 전송될 초기전압을 가변하기위한 수단으로 작용하는 저항(R6)와 상기 저항(R6)와 접지사이에 접속되어 제1트랜지스터를 통해 전송될 초기전압을 가변하기 위한 수단으로 작용하는 저항(R7)로 구성됨을 특징으로 하는 초기전압 가변 링거 선형 집적회로의 스타트업회로.In a ringer linear integrated circuit, three resistors R1-R3 are connected in series between an input terminal IP and ground and serve as a first current path for passing a current of a power supply voltage applied through the input terminal IP. ) And an initial voltage obtained by dividing the voltage applied to the resistor R2, that is, the power supply voltage, by connecting the emitter to the connection point A between the two resistors R1 and R2 among the resistors. A first transistor Q1 having a switching function, a resistor R4 for applying a power supply voltage of the input terminal IP to a base of the first transistor Q1, a base of the first transistor Q1, A zener diode connected to the junction B between two resistors R2 and R3 of the first current path and configured to form a second current path together with the resistor R4 for controlling the first transistor Q1. And the second current path by connecting the collector to the ground (D1) and the connection point (B). A second transistor (Q2) that acts as a switch for controlling, and is connected between the connection point (A) and the resistor (R2) of the first current path to detect the current in the first current path to the second transistor (Q2) The current detection circuit acts as a means for operating the second transistor through a collector, and a collector is connected to the base of the second transistor Q2, and an emitter is connected to the ground, and the voltage is applied to the base from the outside. A first switching circuit acting as a means for turning off the second transistor Q2, and an initial voltage to be transmitted through the first transistor Q1 in parallel with the resistor R1 of the first current path. It consists of a resistor (R6) which acts as a means for and a resistor (R7) which is connected between the resistor (R6) and ground to act as a means for varying the initial voltage to be transmitted through the first transistor The initial voltage variable Ringer linear integrated circuit start-up circuit in which the gong. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019880001557A 1988-02-15 1988-02-15 Start-up circuitry of the variable ringing start voltage ic KR910000215B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019880001557A KR910000215B1 (en) 1988-02-15 1988-02-15 Start-up circuitry of the variable ringing start voltage ic

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019880001557A KR910000215B1 (en) 1988-02-15 1988-02-15 Start-up circuitry of the variable ringing start voltage ic

Publications (2)

Publication Number Publication Date
KR890013889A true KR890013889A (en) 1989-09-26
KR910000215B1 KR910000215B1 (en) 1991-01-23

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ID=19272252

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019880001557A KR910000215B1 (en) 1988-02-15 1988-02-15 Start-up circuitry of the variable ringing start voltage ic

Country Status (1)

Country Link
KR (1) KR910000215B1 (en)

Also Published As

Publication number Publication date
KR910000215B1 (en) 1991-01-23

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