KR950012955A - Inrush Current Limit and Device Circuit - Google Patents

Inrush Current Limit and Device Circuit Download PDF

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Publication number
KR950012955A
KR950012955A KR1019930022249A KR930022249A KR950012955A KR 950012955 A KR950012955 A KR 950012955A KR 1019930022249 A KR1019930022249 A KR 1019930022249A KR 930022249 A KR930022249 A KR 930022249A KR 950012955 A KR950012955 A KR 950012955A
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KR
South Korea
Prior art keywords
capacitor
resistor
voltage
transistor
diode
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Application number
KR1019930022249A
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Korean (ko)
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KR970004358B1 (en
Inventor
최학기
Original Assignee
최학기
주식회사 성원전자
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Priority to KR1019930022249A priority Critical patent/KR970004358B1/en
Publication of KR950012955A publication Critical patent/KR950012955A/en
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Publication of KR970004358B1 publication Critical patent/KR970004358B1/en

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current
    • G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
    • G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
    • G05F1/565—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor
    • G05F1/569—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor for protection
    • G05F1/573—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor for protection with overcurrent detector

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Power Engineering (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Rectifiers (AREA)

Abstract

본 발명은 전자기기로 전원을 투입시 비정상적인 돌입전류를 차단하는 동시에 전지기기에 발생된 자계를 소거하기 위한 돌입전류제한 및 소자회로에 관한 것으로, 트라이악스위칭소자가 점호되는 순간 소자코일과 정특성 서미스터직렬회로에 전원입력 단자로부터 공급되는 상용교류전원을 접속시켜 주고, 비교적 큰 값으로 설정하여 놓은 돌입전류제한저항에 발생되고 있는 손실전류를 트라이악 스위칭소자에 의해 등가적으로 단락시키므로서 소자기능과 돌입전류제한기능을 수행하면서 소비전력을 줄일 수 있다.The present invention relates to an inrush current limit and a device circuit for blocking an abnormal inrush current when power is turned on to an electronic device and at the same time erasing a magnetic field generated in a battery device. The device functions by connecting a commercial AC power supply supplied from a power input terminal to the thermistor series circuit and equally shorting the loss current generated by the inrush current limiting resistor set to a relatively large value by a triac switching element. The power consumption can be reduced while performing the over-inrush current limiting function.

Description

돌입전류제한 및 소자(消磁)회로Inrush Current Limit and Device Circuit

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

제2도는 본 발명의 돌입전류제한 및 소자회로의 상세회로도이다.2 is a detailed circuit diagram of the inrush current limiting and device circuit of the present invention.

Claims (2)

상용교류전원입력단(L1,L2)의 일측(L2)에 연결되며, 제어신호입력단(C)에 연결되어 트라이악(TH1)이 최종적으로 동작하도록 하는 트랜지스터(Q6), 다이오드(D4) 및 저항(R13)을 통해 직류전압을 충전하는 지연콘덴서(C5)와, 주전원의 ON/OFF에 의해 주스위칭트랜스포머(T1)의 2차측 권선에 유지되는 고주파전압을 다이오드(D6) 및 평활콘덴서(C7)를 통해 정류하여 직류전원으로써 저항(R15) 및 트랜지스터(Q5)를 통해 트리거전류를 공급받아 정류다이오드(D9,D10,D11,D12)와 소자코일(Ld)을 턴온시키는 트라이악(TH1)과, 저항(R11,R12)에 의해 분압된 콘덴서(C5) 양단의 직류전압이 트랜지스터(Q4)를 통해 공급되는 트랜지스터(Q5)와, 상용교류전원입력단(L1)에 연결된 돌입전류제한저항(R17) 및 트라이악(TH1) 각각을 통해 정류다이오드(D7,D8,D9,D10,D11,D12)에 의한 브릿지정류작용에 의해 직류전압을 충전하는 콘덴서(C8)와 주전원의 ON/OFF에 의한 트라이악(TH1)의 트리거에 의해 동작하는 서미스터(PTC)와 소자코일(Ld)의 직렬회로부를 구비하여, 전원투입시 발생되는 과대한 돌입전류의 유입을 방지하여 주장치를 보호하는 동시에 주장치내에 존재하는 자계를 소거하도록 된 것을 특징으로 하는 돌입전류제한 및 소자회로.Is connected to a commercial AC power source input terminal side (L 2) of the (L 1, L 2), it is connected to the control signal input (C) the triac (TH1) and the transistor (Q 6) to be the final operation, the diode (D 4 ) and a high frequency voltage held in the secondary winding of the juice switching transformer (T 1 ) by the delay capacitor (C 5 ) for charging the DC voltage through the resistor (R 13 ) and the main power supply ON / OFF. 6 ) and rectified through smoothing capacitor (C 7 ) and receiving the trigger current through resistor (R 15 ) and transistor (Q 5 ) as DC power and rectifying diode (D 9 , D 10 , D 11 , D 12 ) and and the element coil triac (TH1) for turning on (Ld), the resistance of the capacitor divided by (R 11, R 12) ( C 5) the transistor (Q 5 to be supplied a direct current voltage across the two via a transistor (Q 4) ) And rectifying diodes (D 7 , D 8 , D 9 , D 10 ), respectively, through inrush current limiting resistors (R 17 ) and triac (TH1) connected to the commercial AC power input (L 1 ). Capacitor (C 8 ) charging DC voltage by bridge rectification by D 11 , D 12 ) and thermistor (PTC) and element coil operated by trigger of triac (TH1) by ON / OFF of main power supply An inrush current limiting and element circuit, comprising a series circuit portion of Ld, to prevent excessive inrush current generated when the power is turned on, thereby protecting the asserted value and erasing the magnetic field existing in the main device. 제1항에 있어서, L2입력측의 매반 사이클에 의해 다이오드(D4)와 저항(R7)를 통해 직류전압을 충전하는 콘덴서(C3)와, 저항(R13)과 다이오드(D5)를 통해 직류전압을 충전하는 콘덴서(C4)와, 콘덴서(C3)와 저항(R3)의 방전시정수를 콘덴서(C4)와 저항(R4)의 방전시정수보다 작게 하므로서, 정상동작시에는 컷오프상태를 유지하고, 상용교류입력이 1사이클 이상의 순단(瞬斷)의 발생시에는 다이오드(D2)를 통해 턴온되어, 저항(R8,R9), 트랜지스터(Q3) 및 저항(R)을 거쳐서 지연콘덴서(C5)에 충전된 직류전압을 방전시켜 트라이악(TH1)의 게이트트리거전류를 차단하는 트랜지스터(Q2)와; L2입력측의 매반사이클에 의해, 다이오드(D3)와 저항(R4)을 통해 직류전압을 충전하는 콘덴서(C1)와, 다이오드(D3)와 저항(R5)을 통해 직류전압을 충전하는 콘덴서(C2)와, 콘덴서(C1)와 저항(R1)의 방전시정수를 콘덴서(C2)와 저항(R2)의 방전시정수보다 작게 하므로서 정상동작시에는 컷오프상태를 유지하고, 상용교류입력이 1사이클 이상의 순단의 발생시에는 다이오드(D1)를 통해 턴온되어, 저항(R6)를 통해 트랜지스터(Q2)를 턴오프시켜 트라이악(TH2)의 게이트트리거전류를 차단시키는 트랜지스터(Q1)를 가진 순단(瞬斷)검출회로부를 또한 구비하는 것을 특징으로 하는 돌입전류제한 및 소자회로.The method of claim 1, wherein the sheet input side of L 2 Capacitor (C 3 ) charging DC voltage through diode (D 4 ) and resistor (R 7 ) by half cycle, and capacitor (C) charging DC voltage through resistor (R 13 ) and diode (D 5 ). 4 ) The discharge time constant of the capacitor C 3 and the resistor R 3 is smaller than the discharge time constant of the capacitor C 4 and the resistor R 4 , so that the cut-off state is maintained during normal operation. When the AC input generates more than one cycle of pure steps, it is turned on through the diode (D 2 ) and passes through the resistors (R 8 , R 9 ), transistor (Q 3 ), and resistor (R) to delay capacitor (C 5). A transistor (Q 2 ) for discharging the DC voltage charged in the circuit) to block the gate trigger current of the triac TH1; L 2 input side The capacitor C 1 , which charges the DC voltage through the diode D 3 and the resistor R 4 by a half cycle, and the capacitor C, which charges the DC voltage through the diode D 3 and the resistor R 5 ( C 2 ) and the discharge time constants of the capacitor C 1 and the resistor R 1 are smaller than the discharge time constants of the capacitor C 2 and the resistor R 2 to maintain the cut-off state during normal operation. When the AC input generates more than one cycle, a transistor is turned on through the diode D 1 to turn off the transistor Q 2 through the resistor R 6 to block the gate trigger current of the triac TH2. An inrush current limiting and element circuit further comprising a forward stage detection circuit section having Q 1 ). ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930022249A 1993-10-25 1993-10-25 Inrush current protection and demagnetization circuit KR970004358B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930022249A KR970004358B1 (en) 1993-10-25 1993-10-25 Inrush current protection and demagnetization circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930022249A KR970004358B1 (en) 1993-10-25 1993-10-25 Inrush current protection and demagnetization circuit

Publications (2)

Publication Number Publication Date
KR950012955A true KR950012955A (en) 1995-05-17
KR970004358B1 KR970004358B1 (en) 1997-03-27

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Application Number Title Priority Date Filing Date
KR1019930022249A KR970004358B1 (en) 1993-10-25 1993-10-25 Inrush current protection and demagnetization circuit

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000060164A (en) * 1999-03-12 2000-10-16 정몽규 A circuit for proventing heatting bed from surge current

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000060164A (en) * 1999-03-12 2000-10-16 정몽규 A circuit for proventing heatting bed from surge current

Also Published As

Publication number Publication date
KR970004358B1 (en) 1997-03-27

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