KR940010519A - Switching circuit with saturation protection - Google Patents

Switching circuit with saturation protection Download PDF

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Publication number
KR940010519A
KR940010519A KR1019920020345A KR920020345A KR940010519A KR 940010519 A KR940010519 A KR 940010519A KR 1019920020345 A KR1019920020345 A KR 1019920020345A KR 920020345 A KR920020345 A KR 920020345A KR 940010519 A KR940010519 A KR 940010519A
Authority
KR
South Korea
Prior art keywords
circuit
saturation
current
switching circuit
bias
Prior art date
Application number
KR1019920020345A
Other languages
Korean (ko)
Inventor
한창석
Original Assignee
김광호
삼성전자 주식회사
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 김광호, 삼성전자 주식회사 filed Critical 김광호
Priority to KR1019920020345A priority Critical patent/KR940010519A/en
Publication of KR940010519A publication Critical patent/KR940010519A/en

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  • Electronic Switches (AREA)

Abstract

본 발명은 아날로그회로를 구성하는 스위칭회로중에서 특히 트랜지스터의 포화를 방지시키는 스위칭회로에 관한 것으로, 본발명은 바이어스회로가 정상동작시에는 전류공급을 중단하고 상기 바이어스회로가 포화상태시에는 소정의 전류를 공급하여 상기 바이어스회로의 포화를 방지하는 포화방지회로를 구비하는 스위칭회로를 실현하여, 바이어스 트랜지스터의 포화상태를 방지하여 스위칭회로의 안정화를 달성할 수 있으며, 동시에 포화상태로 인한 출력신호의 변화도 방지된다. 이는 또한 전류공급이 중단되어 포화되는 회로나 전류를 선택적으로 입력받기 원하는 회로등의 디바이스 특성을 향상시킬 수 있다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switching circuit that prevents saturation of transistors, among switching circuits constituting an analog circuit. The present invention relates to a current interruption when the bias circuit is in normal operation and a predetermined current when the bias circuit is saturated. A switching circuit having a saturation prevention circuit that prevents the saturation of the bias circuit by supplying the power supply is realized, thereby preventing the saturation state of the bias transistor to achieve stabilization of the switching circuit, and at the same time the change of the output signal due to the saturation state. Is also prevented. It can also improve device characteristics, such as circuits that are interrupted by current supply and circuits that want to selectively receive current.

Description

포화방지기능을 가지는 스위칭회로Switching circuit with saturation protection

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

제2도는 본 발명에 의한 전류공급회로를 이용한 스위칭회로의 실시예.2 is an embodiment of a switching circuit using a current supply circuit according to the present invention.

Claims (2)

아날로그신호처리회로에서 소정의 신호를 선택하기 위하여 바이어스회로를 가지는 스위칭회로에 있어서, 상기 바이어스회로가 정상동작시에는 전류 공급을 중단하고 상기 바이어스회로가 포화상태시에는 소정의 전류를 공급하여 상기 바이어스회로의 포화를 방지하는 포화방지회로를 구비하는 스위칭회로.A switching circuit having a bias circuit for selecting a predetermined signal from an analog signal processing circuit, the switching circuit comprising: stopping the current supply when the bias circuit is in normal operation and supplying a predetermined current when the bias circuit is in a saturation state. A switching circuit comprising a saturation prevention circuit that prevents saturation of the circuit. 제1항에 있어서, 상기 포화방지회로가, 전원전압단(VCC)에 일단자가 접속되어 제1전류를 공급받는 제1저항과, 상기 제1저항의 타단자에 입력단이 접속되어 제2전류를 출력하는 제1다이오드와, 상기 제1저항의 상기 타단자에 일단자가 접속되는 제2저항과, 상기 제2저항의 상기 타단자에 입력단이 접속되는 제2다이오드와, 상기 제2다이오드와 접지전압단(GND) 사이에 형성되는 제3다이오드를 적어도 구비함을 특징으로 하는 스위칭회로.The saturation prevention circuit of claim 1, wherein one end of the saturation prevention circuit is connected to a power supply voltage terminal (VCC) to receive a first current, and an input terminal is connected to the other terminal of the first resistor to supply a second current. A first diode to be output, a second resistor having one end connected to the other terminal of the first resistor, a second diode having an input terminal connected to the other terminal of the second resistor, and the second diode and a ground voltage. And at least a third diode formed between the stages (GND). ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019920020345A 1992-10-31 1992-10-31 Switching circuit with saturation protection KR940010519A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019920020345A KR940010519A (en) 1992-10-31 1992-10-31 Switching circuit with saturation protection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019920020345A KR940010519A (en) 1992-10-31 1992-10-31 Switching circuit with saturation protection

Publications (1)

Publication Number Publication Date
KR940010519A true KR940010519A (en) 1994-05-26

Family

ID=67210154

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019920020345A KR940010519A (en) 1992-10-31 1992-10-31 Switching circuit with saturation protection

Country Status (1)

Country Link
KR (1) KR940010519A (en)

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