KR950025503A - Selective Malfunction Prevention Constant Voltage Circuit - Google Patents

Selective Malfunction Prevention Constant Voltage Circuit Download PDF

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Publication number
KR950025503A
KR950025503A KR1019940002833A KR19940002833A KR950025503A KR 950025503 A KR950025503 A KR 950025503A KR 1019940002833 A KR1019940002833 A KR 1019940002833A KR 19940002833 A KR19940002833 A KR 19940002833A KR 950025503 A KR950025503 A KR 950025503A
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KR
South Korea
Prior art keywords
voltage
constant voltage
constant
dividing
generating means
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Application number
KR1019940002833A
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Korean (ko)
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KR960002458B1 (en
Inventor
김찬
Original Assignee
곽정소
한국전자 주식회사
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Application filed by 곽정소, 한국전자 주식회사 filed Critical 곽정소
Priority to KR1019940002833A priority Critical patent/KR960002458B1/en
Publication of KR950025503A publication Critical patent/KR950025503A/en
Application granted granted Critical
Publication of KR960002458B1 publication Critical patent/KR960002458B1/en

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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F3/00—Non-retroactive systems for regulating electric variables by using an uncontrolled element, or an uncontrolled combination of elements, such element or such combination having self-regulating properties
    • G05F3/02—Regulating voltage or current
    • G05F3/08—Regulating voltage or current wherein the variable is dc
    • G05F3/10—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics
    • G05F3/16—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices
    • G05F3/20—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations
    • G05F3/22—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations wherein the transistors are of the bipolar type only
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F3/00—Non-retroactive systems for regulating electric variables by using an uncontrolled element, or an uncontrolled combination of elements, such element or such combination having self-regulating properties
    • G05F3/02—Regulating voltage or current
    • G05F3/08—Regulating voltage or current wherein the variable is dc
    • G05F3/10—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics
    • G05F3/16—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices
    • G05F3/20—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations
    • G05F3/26—Current mirrors
    • G05F3/265—Current mirrors using bipolar transistors only

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Electrical Variables (AREA)
  • Continuous-Control Power Sources That Use Transistors (AREA)

Abstract

본 발명은 선택적 오동작 방지 정전압회로에 관한 것으로서, 이는 전원전압이 일정 이상의 전압으로 입력되면 정전압발생수단의 정전압을 일정기간 동안 유지시켜 정상적으로 출력하고 전원전압이 과도한 전압으로 입력될 경우에는 정전압 발생수단의 정전압을 영전위로 감소시켜 회로의 보호 및 오동작을 방지하도록 한것이다. 이와 같은 본 발명은 전압분압수단으로 부터 분압되어 어어진 전압의 레벨을 검출하여 일정전압 이상일 경우 정전압발생수단의 정전압을 영전위로 유지시키는 분압전압검출수단과, 상기 분압전압검출수단에서 얻어진 전압에 따라 스위칭되어 정전압발생수단에서 얻어진 전전압을 제어하여 출력하는 정전압제어출력수단을 포함하여 이루어짐으로써, 달성된다.The present invention relates to a selective malfunction prevention constant voltage circuit, which maintains the constant voltage of the constant voltage generating means for a predetermined period when the power supply voltage is input at a predetermined voltage or more, and outputs normally when the power supply voltage is input at an excessive voltage. The constant voltage is reduced to zero potential to prevent circuit protection and malfunction. The present invention as described above detects the level of the voltage divided by the voltage dividing means and, if a predetermined voltage or more, divided voltage detecting means for maintaining the constant voltage of the constant voltage generating means at zero potential, and according to the voltage obtained by the divided voltage detecting means. It is achieved by including a constant voltage control output means that is switched to control and output the full voltage obtained from the constant voltage generating means.

Description

선택적 오동작 방지 정전압 회로Selective Malfunction Prevention Constant Voltage Circuit

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

제3도는 본 발명 선택적 오동작 방지 정전압 회로도,3 is a selective malfunction prevention constant voltage circuit of the present invention;

제4로는 제3도 정전압 발생수단의 출력 파형도.4 is an output waveform diagram of the third voltage generator.

Claims (3)

전압분압수단으로 부터 분압되어 얻어진 전압의 레벨을 검출하여 일정전압 이상일 경우 정전압발생수단의 정전압을 영전위로 유지시키는 분압전압검출수단과, 상기 분압전압검출수단에서 얻어진 정전압에 따라 스위칭되어 정전압발생수단에서 얻어진 정전압을 일정레벨로 제어하여 출력하는 정전압제어 출력수단을 포함하여 된 선택적 오동작 방지 정전압회로.A voltage detection means for detecting the level of the voltage obtained by dividing the voltage dividing means and maintaining the constant voltage of the constant voltage generating means at a zero potential when the voltage is higher than a predetermined voltage; and switching in accordance with the constant voltage obtained by the voltage dividing voltage detecting means. An optional malfunction prevention constant voltage circuit comprising a constant voltage control output means for controlling and outputting the obtained constant voltage at a constant level. 제1항에 있어서, 분압전압검출수단은 상기 정전압발생수단에서 얻어진 전류를 공급하는 전류미러회로와, 상기 전압분압수단으로 부터 분압되어 얻어진 전압이 일정전압 이상일 경우 도퉁되어 전류미러회로를 통한 전류를 저항(Rl5)을 통해 접지로 바이패스시키는 제1 스위칭소자로 구성함을 특징으로 한 선택적 오동작 방지 정전압회로.2. The voltage dividing voltage detecting means according to claim 1, wherein the divided voltage detecting means is provided with a current mirror circuit for supplying the current obtained by the constant voltage generating means, and when the voltage obtained by the voltage dividing from the voltage dividing means is equal to or higher than a predetermined voltage, An optional malfunction prevention constant voltage circuit, comprising: a first switching element bypassing to ground through a resistor (Rl5). 제1항에 있어서, 정전압제어 출력수단은 상기 분압전압검출수단에서 공급된 전압에 의해 스위칭되어 저항(R13)(R14)을 통한 정전압발생수단의 전압을 저항(R15)을 통해 접지로 바이패스시키는 제2스위치소자와, 싱기 스위칭소자의 도통 및 차단에 따라 스위칭되어 정전압발생수단의 전압을 저항(R10)을 통해 출력하는 제3 스위칭 소자와, 상기 저항(R12)을 통한 전압을 일정레벨로 유지시켜 정전압으로 출력하는 제너다이오드로 구성함을 특징으로 한 선택적 오동작 방지회로.The constant voltage control output means is switched by a voltage supplied from the divided voltage detecting means to bypass the voltage of the constant voltage generating means through the resistors R13 and R14 to ground through the resistor R15. A third switching element which is switched according to the conduction and disconnection of the second switching element, the singing switching element and outputs the voltage of the constant voltage generating means through the resistor R10, and maintains the voltage through the resistor R12 at a constant level; Selective malfunction prevention circuit comprising a zener diode outputting a constant voltage. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940002833A 1994-02-17 1994-02-17 Error prevention constant voltage circuit KR960002458B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940002833A KR960002458B1 (en) 1994-02-17 1994-02-17 Error prevention constant voltage circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940002833A KR960002458B1 (en) 1994-02-17 1994-02-17 Error prevention constant voltage circuit

Publications (2)

Publication Number Publication Date
KR950025503A true KR950025503A (en) 1995-09-18
KR960002458B1 KR960002458B1 (en) 1996-02-17

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Application Number Title Priority Date Filing Date
KR1019940002833A KR960002458B1 (en) 1994-02-17 1994-02-17 Error prevention constant voltage circuit

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KR (1) KR960002458B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000056387A (en) * 1999-02-19 2000-09-15 이장헌 Power control system for protecting human life and the methods

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000056387A (en) * 1999-02-19 2000-09-15 이장헌 Power control system for protecting human life and the methods

Also Published As

Publication number Publication date
KR960002458B1 (en) 1996-02-17

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