KR20000016543U - Lightness protect circuit - Google Patents
Lightness protect circuit Download PDFInfo
- Publication number
- KR20000016543U KR20000016543U KR2019990001559U KR19990001559U KR20000016543U KR 20000016543 U KR20000016543 U KR 20000016543U KR 2019990001559 U KR2019990001559 U KR 2019990001559U KR 19990001559 U KR19990001559 U KR 19990001559U KR 20000016543 U KR20000016543 U KR 20000016543U
- Authority
- KR
- South Korea
- Prior art keywords
- standby
- resistor
- circuit
- transformer
- lightning
- Prior art date
Links
- 238000010586 diagram Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/20—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for electronic equipment
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/04—Arrangements for preventing response to transient abnormal conditions, e.g. to lightning or to short duration over voltage or oscillations; Damping the influence of dc component by short circuits in ac networks
- H02H1/043—Arrangements for preventing response to transient abnormal conditions, e.g. to lightning or to short duration over voltage or oscillations; Damping the influence of dc component by short circuits in ac networks to inrush currents
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
- H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
- H02H7/1213—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for DC-DC converters
-
- 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
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
본 고안은 전자기기의 스텐바이 전원을 공급하는 스텐바이 IC에서, 낙뢰 발생시 IC가 파손되는 것을 방지해 주도록 하는 낙뢰 보호회로에 관한 것이다.The present invention relates to a lightning protection circuit for preventing an IC from being damaged in the event of a lightning strike in a standby IC that supplies a standby power supply for an electronic device.
이러한 본 고안은 스텐바이 회로의 전원입력단에 바리스터를 연결하는 한편 스텐바이 IC의 드레인핀에 저항을 연결하고 스텐바이 IC의 콘트롤핀에는 저항을 연결하는 한편 그라운드 사이에 제너다이오드를 연결하므로써 이루어진다.This invention is achieved by connecting a varistor to the power input of the standby circuit, connecting a resistor to the drain pin of the standby IC, connecting a resistor to the control pin of the standby IC, and connecting a zener diode between grounds.
Description
본 고안은 전자기기의 스텐바이 전원을 공급하는 스텐바이 IC에서, 낙뢰 발생시 IC가 파손되는 것을 방지해 주도록 하는 낙뢰 보호회로에 관한 것이다.The present invention relates to a lightning protection circuit for preventing an IC from being damaged in the event of a lightning strike in a standby IC that supplies a standby power supply for an electronic device.
전자기기에 적용되는 스텐바이 회로는 도 1 에 도시된 바와 같이 AC 입력을 정류한 DC를 트랜스(T1)의 1차측에 인가시키고 상기 트랜스(T1)에서 유기된 2차전압을 정류하여 스텐바이 IC(IC1)에 인가시킴으로써 스텐바이 IC(IC1)에서 트랜스(T1)를 스위칭시켜 2차측으로 +5V의 스텐바이 전원을 공급하게 구성된다.As shown in FIG. 1, a standby circuit applied to an electronic device applies a DC rectified AC input to a primary side of a transformer T1, and rectifies a secondary voltage induced in the transformer T1. By applying to IC1, the transformer T1 is switched from the standby IC IC1 to supply a standby power of + 5V to the secondary side.
여기서 스텐바이 IC(IC1)의 콘트롤핀(C)은 트랜스(T1)의 2차측에 연결되는 한편 콘덴서(C6)를 통하여 그라운드에 연결되고 소오스핀(S)은 그라운드에 접속되며 드레인핀(D)은 DC 입력측과 연결되어 있다.Here, the control pin (C) of the standby IC (IC1) is connected to the secondary side of the transformer (T1) while connected to the ground through the capacitor (C6), the source pin (S) is connected to the ground and drain pin (D) Is connected to the DC input side.
따라서 낙뢰 발생시 입력측으로 과전류가 인가될 경우 스텐바이 IC(IC1)의 드레인핀(D)에 과전류가 흘러 스텐바이 IC(IC1)가 파괴되는 경우가 발생되고 또한 낙뢰발생으로 그라운드에 과전류가 인가될 경우 스텐바이 IC(IC1)의 콘트롤핀(C)으로 흐르게 되어 이때에도 스텐바이 IC(IC1)가 파괴되어 버리는 문제가 발생된다.Therefore, when an overcurrent is applied to the input side during a lightning strike, an overcurrent flows through the drain pin (D) of the standby IC (IC1) to destroy the standby IC (IC1), and when an overcurrent is applied to the ground due to a lightning strike. Since the current flows to the control pin C of the standby IC IC1, the standby IC IC1 is destroyed.
즉 기존의 스텐바이 회로에서는 낙뢰발생시 스텐바이 IC(IC1)의 드레인핀(D) 또는 콘트롤핀(C)에 과전류가 인가되므로써 스텐바이 IC(IC1)가 파괴되는 경우가 발생되므로 낙뢰에 취약할 수 밖에 없다.That is, in the standby circuit, when the lightning strike occurs, overcurrent is applied to the drain pin (D) or the control pin (C) of the standby IC (IC1), which causes the standby IC (IC1) to be destroyed. There is nothing else.
본 고안은 스텐바이 회로가 구비된 전자기기에서, 스텐바이 IC의 드레인핀과 콘트롤핀에 각각 낙뢰 보호용 전기소자를 연결시킴으로써 낙뢰 발생시 스텐바이 IC가 파괴되는 문제점을 없애도록 하는 것이다.The present invention is to eliminate the problem that the standby IC is destroyed in the event of a lightning strike by connecting the lightning protection electrical elements to the drain pin and the control pin of the standby IC in the electronic device equipped with a standby circuit.
이러한 본 고안은 스텐바이 회로의 전원입력단에 바리스터를 연결하는 한편 스텐바이 IC의 드레인핀에 저항을 연결하고 스텐바이 IC의 콘트롤핀에는 저항을 연결하는 한편 그라운드 사이에 제너다이오드를 연결하므로써 이루어지며 낙뢰발생시 전원입력단으로 인가되는 과전류는 바리스터와 저항에 의해 차단시키고, 그라운드를 통해 인가되는 과전류는 저항 및 제너다이오드에 의해 차단되게 하여 낙뢰 발생시 스텐바이 IC의 파괴를 방지하는 것이다.The present invention is made by connecting a varistor to the power input terminal of the standby circuit, connecting a resistor to the drain pin of the standby IC, connecting a resistor to the control pin of the standby IC, and connecting a zener diode between grounds. The overcurrent applied to the power input terminal during the generation is cut off by the varistor and the resistor, and the overcurrent applied through the ground is cut off by the resistor and the zener diode to prevent the destruction of the standby IC during the lightning strike.
도 1 은 기존 회로도1 is a conventional circuit diagram
도 2 는 본 고안의 실시회로도2 is a circuit diagram of the subject innovation
<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>
T1 : 트랜스 IC1 : 스텐바이 IC R1,R2,R3 : 저항T1: Trans IC1: Standby IC R1, R2, R3: Resistance
VA : 바리스터 D2,D3,D5 : 제너다이오드VA: Varistor D2, D3, D5: Zener Diode
도 2 는 본 고안의 실시회로도로써2 is an implementation circuit diagram of the present invention.
기존과 동일한 구성과 작용을 하는 부품에는 동일도면부호를 부여하고 그에 대한 상세설명은 생략한다.The same reference numerals are given to the components having the same configuration and function as the existing ones, and detailed description thereof is omitted.
본 고안은 트랜스(T1)에 스텐바이 IC(IC1)가 연결된 통상의 스텐바이 회로에 있어서,The present invention is a conventional standby circuit in which the standby IC (IC1) is connected to the transformer (T1),
트랜스(T1)에 인가되는 전원입력라인에 430V 바리스터(VA)를 연결하고 스텐바이 IC(IC1)의 드레인핀(D)에는 2W 27Ω의 저항(R2)을 연결하며, 스텐바이 IC(IC1)의 콘트롤핀(C)에는 2W, 100Ω의 저항(R3)을 연결하는 한편 그라운드 사이에 제너다이오드(D5)를 연결 구성시키게 된다.Connect the 430V varistor (VA) to the power input line applied to the transformer (T1), connect a 2W 27Ω resistor (R2) to the drain pin (D) of the standby IC (IC1), and connect the standby IC (IC1) A 2W, 100Ω resistor R3 is connected to the control pin C while a zener diode D5 is connected between grounds.
이러한 구성의 본 고안은 상기된 바와 같이 전기소자의 정수값이 한정되지는 않고 적용기기에 따라 정수값을 달리하여 적용시키게 된다.The present invention of such a configuration is not limited to the integer value of the electric element as described above is to be applied by varying the integer value according to the application.
본 고안의 스텐바이 회로에 낙뢰가 발생하면 전원입력단으로 과전류가 인입되거나 2차측 그라운드로 과전류가 인입되는 경우가 발생한다.When lightning occurs in the standby circuit of the present invention, an overcurrent may be introduced into a power input terminal or an overcurrent may be introduced into a secondary ground.
스텐바이 모드시 낙뢰가 발생하여 전원입력단으로 과전류가 인입되면 바리스터(VA)에 의해 1차 차단되고 저항(R2)에 의해 2차 차단되어지므로 스텐바이 IC(IC1)의 드레인핀(D)은 낙뢰로부터의 영향을 배제시킬 수 있다.When lightning occurs in the standby mode and an overcurrent flows into the power input, the drain pin (D) of the standby IC (IC1) is lightning-blocked by the varistor (VA) and blocked by the resistor (R2). Effect can be excluded.
또한 스텐바이 모드시 낙뢰가 발생하여 그라운드로 과전류가 인입되면 제너다이오드(D5)를 통하여 1차 차단되고 저항(R3)에 의하여 2차 차단되어지므로 스텐바이 IC(IC1)의 콘트롤핀(C)은 낙뢰로부터의 영향을 배제시킬 수 있다.In addition, when a lightning strike occurs in the standby mode and an overcurrent flows into the ground, the control pin (C) of the standby IC (IC1) is first blocked by the zener diode (D5) and secondly by the resistor (R3). The effects from lightning strikes can be ruled out.
본 고안은 스텐바이 회로에서 낙뢰가 발생하면 전원인입단 또는 그라운드로부터 인입되는 과전류를 효과적으로 차단시켜 주어 스텐바이 IC가 낙뢰로 인하여 파괴되는 문제점을 없애게 된다.The present invention effectively blocks the overcurrent drawn from the power supply terminal or ground when a lightning strike occurs in the standby circuit, thereby eliminating the problem that the standby IC is destroyed by the lightning strike.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019990001559U KR20000016543U (en) | 1999-02-03 | 1999-02-03 | Lightness protect circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019990001559U KR20000016543U (en) | 1999-02-03 | 1999-02-03 | Lightness protect circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR20000016543U true KR20000016543U (en) | 2000-09-25 |
Family
ID=54758913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019990001559U KR20000016543U (en) | 1999-02-03 | 1999-02-03 | Lightness protect circuit |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR20000016543U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7788107B2 (en) | 2005-08-30 | 2010-08-31 | Lg Electronics Inc. | Method for decoding an audio signal |
| KR20210047657A (en) * | 2019-10-22 | 2021-04-30 | 화인시스템(주) | Anti-theft and Monitoring System for Ground wire |
-
1999
- 1999-02-03 KR KR2019990001559U patent/KR20000016543U/en not_active Application Discontinuation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7788107B2 (en) | 2005-08-30 | 2010-08-31 | Lg Electronics Inc. | Method for decoding an audio signal |
| KR20210047657A (en) * | 2019-10-22 | 2021-04-30 | 화인시스템(주) | Anti-theft and Monitoring System for Ground wire |
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| WITN | Application deemed withdrawn, e.g. because no request for examination was filed or no examination fee was paid |