KR101046911B1 - Power distribution circuit with noise and electromagnetic wave protection - Google Patents

Power distribution circuit with noise and electromagnetic wave protection Download PDF

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KR101046911B1
KR101046911B1 KR1020090016843A KR20090016843A KR101046911B1 KR 101046911 B1 KR101046911 B1 KR 101046911B1 KR 1020090016843 A KR1020090016843 A KR 1020090016843A KR 20090016843 A KR20090016843 A KR 20090016843A KR 101046911 B1 KR101046911 B1 KR 101046911B1
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South Korea
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power
circuit
noise
switching mode
overload
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KR1020090016843A
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Korean (ko)
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KR20100097944A (en
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김이혜숙
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김이혜숙
(주)삼보텍
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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
    • H02H7/10—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
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/14—Arrangements for reducing ripples from dc input or output
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0064—Magnetic structures combining different functions, e.g. storage, filtering or transformation

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

본 발명은 순간적으로 발생하는 돌입전류를 방지하고, 전기기기 자체에서 발생하는 전자기장과 잡음을 제거하며, 모니터링기능을 가지도록 한 잡음 및 전자기파방지기능을 가진 전원분배회로에 관한 것으로, 이 장치는 전류센서와 과전류를 차단하기 위한 서킷브레이커가 구비된 과부하 차단스위치; 전류와 전압, 그리고 전력량을 측정하여 입력된 전원을 모니터링하는 파워모니터회로; 공급된 AC라인의 노이즈를 제거하기 위해 RC공진회로를 구비하여 인체에 유해한 저주파에 대한 필터링을 수행하는 잡음및전자기장방지회로; 공급된 교류를 직류로 변환시키고, 부하가 연결되면 동작하여 대기전력을 줄인 스위칭모드파워회로부; 상기 스위칭모드파워회로부의 출력전원을 시간별로 제어하는 컨트롤회로; 릴레이 온오프 노이즈, 방사선노이즈, 방송파, 출력전원에 포함된 잡음을 제거하기 위해 고주파필터링을 수행하는 방사선잡음및방송파 방지회로를 포함한다.The present invention relates to a power distribution circuit having a noise and electromagnetic wave prevention function to prevent an inrush current occurring instantaneously, to remove the electromagnetic field and noise generated from the electric device itself, and to have a monitoring function. An overload cutoff switch provided with a circuit breaker for blocking a sensor and an overcurrent; A power monitor circuit for monitoring input power by measuring current, voltage, and power; A noise and electromagnetic field prevention circuit having a RC resonance circuit to remove noise of the supplied AC line and performing filtering on low frequency harmful to a human body; A switching mode power circuit unit which converts the supplied alternating current into direct current and operates when a load is connected to reduce standby power; A control circuit for controlling the output power of the switching mode power circuit part by time; It includes a radiation noise and broadcast wave prevention circuit that performs high frequency filtering to remove the relay on / off noise, radiation noise, broadcast wave, and noise included in the output power.

전원분배장치, 전원분배회로 Power Distribution Device, Power Distribution Circuit

Description

잡음 및 전자기파 방지기능을 가진 전원분배회로{the power distribution circuit having the function preventing noise and electromagnetic wave}The power distribution circuit having the function preventing noise and electromagnetic wave

본 발명은 전원 및 전자기파 방지기능을 가진 전원분배회로에 관한 것으로, 더 상세하게는 순간적으로 발생하는 돌입전류를 방지하고, 전기기기 자체에서 발생하는 전자기장과 잡음을 제거하며, 출력상태를 모니터링하는 기능을 가지도록 한 잡음 및 전자기파 방지기능을 가진 전원분배회로에 관한 것이다.The present invention relates to a power distribution circuit having a power supply and an electromagnetic wave prevention function, and more particularly, to prevent inrush current occurring instantaneously, to remove electromagnetic fields and noise generated from the electric device itself, and to monitor an output state. The present invention relates to a power distribution circuit having a noise and electromagnetic wave prevention function.

종래의 전원분배장치를 살펴본다.Look at the conventional power distribution device.

2004년08월11일자로 출원된 안전스위치를 갖춘 전원분배기(출원번호 20-2004-0022979)에 따르면, "하나의 입력전원을 여러개의 출력전원으로 나누어주는 전원분배기에 있어서, 전원입력부(10)와, 다수 개의 전원출력을 위한 전원출력부(50)와, 상기 전원출력부의 각각의 전원을 차단할수 있는 안전스위치부(20)와, 상기 안전스위치로부터 전원출력부로 흐르는 전류량을 감지하는 전류감지부(30)와, 흐르는 전류량을 기준값과 비교하여 안전스위치의 차단이나 연결을 결정하는 제어부(80)를 포함함을 특징으로 하는 안전스위치를 갖춘 전원분배기."가 개시된 바 있다.According to the power distributor (application number 20-2004-0022979) with a safety switch filed on Aug. 11, 2004, "In the power distributor for dividing one input power into multiple output power, the power input unit 10 And a power output unit 50 for a plurality of power outputs, a safety switch unit 20 capable of cutting off each power of the power output unit, and a current sensing unit for sensing the amount of current flowing from the safety switch to the power output unit. And a control unit 80 for determining the blocking or connection of the safety switch by comparing the amount of current flowing with the reference value with the reference value 30. "

2004년11월26일자로 출원된 지연 전원 분배기(출원번호 20-2004-0033499)에 따르면, "제어부(12)와 전원부(11) 메인 스위치(9)와 각각의 전원 스위치(1-7)와 지연전원스위치(8)로 구성되고 제어부(12)에 전원제어 프로그램이 설치된 마이콤을 갖춘 전원분배기로서 프로그램의 설정에 따라 전원 차단 시 순차적 전원차단 외에 일정시간을 지체하여 전원이 차단되는 지연전원(8)차단장치를 갖춘 것을 특징으로하는 전원 분배기"가 개시된 바 있다.According to the delayed power distributor (Application No. 20-2004-0033499) filed November 26, 2004, "The control unit 12, the power supply unit 11 main switch 9 and the respective power switch 1-7 and It is composed of delayed power switch (8) and a power divider equipped with a microcomputer with a power control program installed in the control unit (12). A power distributor characterized in that it has a blocking device "has been disclosed.

2007년02월12일자로 출원된 다중 전원 분배기(출원번호 10-2007-0014167)에 따르면, "외부로부터 입력되는 AC 전원을 공급받아 각종 전자제품의 구동 전원을 공급하는 통상의 전원 분배기에 있어서, 상기 전원분배기(10)를 원격지에서 제어할 수 있도록 하는 PC(38)와, 상기 전원분배기(10)에 설치되어 수동으로 제어할 수 있도록 하는 복수개의 선택스위치(28)와, 상기 AC 전원을 AC용 또는 DC용으로 분배하기 위한 복수개의 슬롯(32)과, 상기 각 슬롯(32)에 AC용 전원출력부 또는 DC용 전원출력부가 삽입되었는지를 감지하는 슬롯 검출부(22)와, 상기 PC(38) 또는 상기 선택스위치(28)의 조작에 따라 상기 복수개의 슬롯(32) 중에서 선택된 어느 하나 이상의 슬롯(32)으로 전원이 출력될 수 있도록 제어하는 출력 선택부(20)와, 상기 전원분배기(10)에 설치되는 디스플레이 유니트(30) 중에서 실제 사용하고자 하는 디스플레이 유니트(30)의 종류를 판단하는 검출부(16)와, 상기 전원분배기(10)의 내부에서 발생하는 모든 데이터를 저장하는 메모리부(14)와, 상기 메모리부(14)에서 데이터를 로드하여 상기 각 장치들을 제어하거나 상기 PC(38)에서 전송되는 데이터를 받아들여 처리하는 CPU(12)를 포함하는 것을 특징으로 하는 다중 전원 분배 기."가 개시된 바 있다.According to a multiple power distributor (Application No. 10-2007-0014167) filed on Feb. 12, 2007, "In a conventional power distributor for supplying driving power for various electronic products by receiving AC power input from the outside, PC 38 to remotely control the power splitter 10, a plurality of select switches 28 installed on the power splitter 10 for manual control, and AC power to AC A plurality of slots (32) for distributing for power or DC, a slot detector (22) for detecting whether an AC power output unit or a DC power output unit is inserted into each of the slots (32), and the PC (38). Or an output selector 20 for controlling power to be output to any one or more slots 32 selected from the plurality of slots 32 according to an operation of the selection switch 28, and the power distributor 10. Display unit (30) A detection unit 16 for determining the type of display unit 30 to be actually used, a memory unit 14 for storing all data generated in the power distributor 10, and the memory unit 14. And a CPU 12 which loads data from and controls each of the devices or receives and processes the data transmitted from the PC 38. "

최근, 네트워크 랙 등의 장비가 밀접한 위치에 설치되고, 이로 인해 수요전력이 증가하는 추세에 있고, 다른 전기기기 자체에서 발생되는 전자기장과 전기기기의 밀접화로 인해 잡음이 발생된다. 이로인해, 종래기술로 해결되었던 돌입방지기능도 새로운 전원분배회로에 맞추어 다시 설계해야 할 시점이다.Recently, equipment such as a network rack is installed in a close position, due to which the demand power is increasing, noise is generated due to the closeness of the electromagnetic field and the electrical equipment generated from other electrical equipment itself. As a result, it is time to redesign the inrush prevention function, which has been solved by the prior art, for a new power distribution circuit.

또한, 종래에는 AC라인에 파인필터를 이용하여 노이즈필터링를 수행하는데, 이때 필터링하는 주파수범위가 광범위하여 인체 유해한 주파수를 충분히 걸러주지 못하기 때문에 잡음과 전자기장이 다량 발생되는 문제점에 직면해 있다.In addition, conventionally, noise filtering is performed using a fine filter on an AC line. In this case, since the frequency range for filtering is not wide enough to filter out harmful frequencies, a large amount of noise and electromagnetic fields are encountered.

더욱이, 네트워크 랙에 새로운 서버나 장비가 추가될 경우에는 일일히 측정하지 않고도 가능한지 여부를 파악할 수 있도록 할 필요가 있다.Moreover, when new servers or equipment are added to the network rack, it is necessary to be able to determine whether it is possible without having to measure them individually.

본 발명은 상술한 문제점을 해소하기 위한 것으로, 각종 전기기기에 전원을 공급할 때 순간적으로 발생하는 돌입전류를 방지하고, 전기기기 자체에서 발생되는 전자기장과 잡음을 제거하며 새로운 장비가 추가될 때 수용 가능한지 여부를 직관적으로 파악할 수 있도록 한 잡음 및 전자기파 방지기능을 가진 전원분배회로를 제공하는데 그 목적이 있다.The present invention is to solve the above problems, to prevent the inrush current generated when power is supplied to various electrical equipment, to remove the electromagnetic field and noise generated in the electrical equipment itself and to be acceptable when new equipment is added The purpose of the present invention is to provide a power distribution circuit with noise and electromagnetic wave prevention function to intuitively grasp whether or not.

상기 목적을 달성하기 위한 본 발명은 전류센서와 과전류를 차단하기 위한 서킷브레이커가 구비된 과부하 차단스위치; 전류와 전압, 그리고 전력량을 측정하 여 입력된 전원을 모니터링하는 파워모니터회로; 공급된 AC라인의 노이즈를 제거하기 위해 RC공진회로를 구비하여 인체에 유해한 저주파에 대한 필터링을 수행하는 잡음및전자기장방지회로; 공급된 교류를 직류로 변환시키고, 부하가 연결되면 동작하여 대기전력을 줄인 스위칭모드파워회로부; 상기 스위칭모드파워회로부의 출력전원을 시간별로 제어하는 컨트롤회로; 릴레이 온오프 노이즈, 방사선노이즈, 방송파, 출력전원에 포함된 잡음을 제거하기 위해 고주파필터링을 수행하는 방사선잡음및방송파 방지회로를 포함한다.The present invention for achieving the above object is an overload cut-off switch having a circuit breaker for blocking the current sensor and the overcurrent; A power monitor circuit for monitoring input power by measuring current, voltage, and power; A noise and electromagnetic field prevention circuit having a RC resonance circuit to remove noise of the supplied AC line and performing filtering on low frequency harmful to a human body; A switching mode power circuit unit which converts the supplied alternating current into direct current and operates when a load is connected to reduce standby power; A control circuit for controlling the output power of the switching mode power circuit part by time; It includes a radiation noise and broadcast wave prevention circuit that performs high frequency filtering to remove the relay on / off noise, radiation noise, broadcast wave, and noise included in the output power.

상기 스위칭모드 파워회로부는 중앙에 설치된 스위칭모듈을 기준으로 전단에는 WA2, 노이즈필터, 브리지다이오드, 사이리스터, 콘덴서로 이루어진 EMI를 방지하기 위한 회로와, 후단에는 코일, 정전압레귤레이터, 콘덴서들로 이루어진 파형필터로 구성된다.The switching mode power circuit unit is a circuit for preventing EMI consisting of WA2, noise filter, bridge diode, thyristor, and capacitor at the front and waveform filter composed of coil, constant voltage regulator and capacitor at the front, based on the switching module installed at the center. It consists of.

상기 과부하 차단스위치는 교류라인에 연결되어 외부로부터 공급된 교류전원의 과부하 혹은 단락을 감지하고 차단하기 위한 회로이고, 전압/전류감지소자가 교류전원에 연결되고, 이 교류전원 내부에 포함된 과부하 혹은 단락을 비교기에서 감지하여 과부하나 단락이 감지될 경우에는 트랜지스터를 동작시켜 전원공급을 차단한다.The overload cutoff switch is a circuit for detecting and blocking an overload or a short circuit of an AC power supplied from the outside by being connected to an AC line, and a voltage / current sensing element is connected to the AC power, and the overload or If the short circuit is detected by the comparator and an overload or short circuit is detected, the transistor is turned on to cut off the power supply.

본 실시예의 바람직한 양태에 따르면, 전원분배회로의 품질과 안정성을 증대시킬 수 있는 장점이 있고, 저주파필터링과 고주파필터링을 통해서 인체에 무해하도록 하고, 인접 기기들의 영향을 최소화시킨 고품질의 전원공급장치를 제공할 수 있는 장점이 있다.According to a preferred embodiment of the present embodiment, there is an advantage in that the quality and stability of the power distribution circuit can be increased, and a high quality power supply device that is harmless to the human body through low frequency filtering and high frequency filtering, and minimizes the influence of adjacent devices. There is an advantage that can be provided.

이하, 첨부도면을 참조하여 본 발명을 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명에 따라 잡음 및 전자기장 방지기능을 가진 전원분배회로의 개략적인 구성을 나타낸 블록도로서, 전원분배회로는 전류센서와 과전류를 차단하기 위한 서킷브레이커가 구비된 과부하 차단스위치(11), 전류와 전압, 그리고 전력량을 측정하여 입력된 전원을 모니터링하는 파워모니터회로(12), 공급된 AC라인의 노이즈를 제거하기 위해 RC공진회로를 구비하여 인체에 유해한 저주파에 대한 필터링을 수행하는 잡음및전자기장방지회로(13)가 구비된다.1 is a block diagram showing a schematic configuration of a power distribution circuit having a noise and electromagnetic field protection function according to the present invention, wherein the power distribution circuit has an overload cut-off switch 11 having a circuit breaker for blocking a current sensor and an overcurrent. , Power monitor circuit 12 that monitors input power by measuring current, voltage, and power amount, and RC resonance circuit to remove noise of supplied AC line to filter low frequency harmful to human body And an electromagnetic field prevention circuit 13.

또한, 공급된 교류를 직류로 변환시키고, 부하가 연결되면 동작하여 대기전력을 줄인 스위칭모드파워회로부(14), 상기 스위칭모드파워회로부의 출력전원을 시간별로 제어하는 컨트롤회로(15), 릴레이 온오프 노이즈, 방사선노이즈, 방송파, 출력전원에 포함된 잡음을 제거하기 위해 고주파필터링을 수행하는 방사선잡음및방송파방지회로(16)를 포함한다.In addition, a switching mode power circuit unit 14 which converts the supplied alternating current into direct current and operates when a load is connected to reduce standby power, a control circuit 15 for controlling the output power of the switching mode power circuit unit by time, and relay on And a radiation noise and broadcast wave prevention circuit 16 which performs high frequency filtering to remove off noise, radiation noise, broadcast wave, and noise included in the output power.

여기서, 상기 서킷브레이커(Circuit breaker)는 전기 회로에서 과부하가 걸리거나 단락으로 인한 피해를 막기 위해 자동으로 회로를 정지시키는 장치이다. 퓨즈와 다른 점은 서킷 브레이커는 어느 정도 시간이 지난 뒤 원래의 기능이 동작하도록 복귀되는 점에 있다.Here, the circuit breaker is a device that automatically stops the circuit to prevent damage due to overload or short circuit in the electrical circuit. The difference with the fuse is that the circuit breaker will return to its original function after some time.

이를 좀더 구체적으로 살펴본다.Let's look at this more specifically.

도 2는 스위칭모드파워회로부를 나타낸 회로도로서, 스위칭모드파워회로부의 주요기능은 교류전원을 직류전원으로 변환하는 것이지만, 이과정에서 각종 노이즈를 제거하는 구성요소가 포함된다.FIG. 2 is a circuit diagram illustrating a switching mode power circuit unit. The main function of the switching mode power circuit unit is to convert an AC power source to a DC power source, but includes components for removing various noises in this process.

즉, 중앙에 배치된 스위칭모듈을 중심으로 전단에는 WA2, 노이즈필터(NF1), 브리지다이오드(BD1), 사이리스터(TH1), 콘덴서(CY1)(C2)가 구비되어 EMI를 방지하기 위한 회로가 구성되고, 후단에는 코일(L1)(L2), 정전압레귤레이터(Q1), 콘덴서들(C3)(C4)(C5)(C6)(C7)(C8)로 이루어진 파형필터가 구비되는데, 부하가 없으면 발진하지 않도록 한 구성을 가지고 있다.In other words, a circuit to prevent EMI is provided at the front end with WA2, noise filter (NF1), bridge diode (BD1), thyristor (TH1), and capacitor (CY1) (C2). At the rear end, a waveform filter consisting of coils L1, L2, constant voltage regulator Q1, and capacitors C3, C4, C5, C6, C7, and C8 is provided. I have a configuration that prevents it.

도 3은 과부하 차단스위치를 나타낸 회로도로서, 과부하및단락감지회로는 교류라인에 연결되어 외부로부터 공급된 교류전원의 과부하 혹은 단락을 감지하고 차단하기 위한 회로로서, 전압/전류감지소자(CT)(M1)가 교류전원(Ac Hot)에 연결되고, 이 교류전원 내부에 포함된 과부하 혹은 단락을 비교기에서 감지하여 과부하나 단락이 감지될 경우에는 트랜지스터(Q2)를 동작시켜 전원공급을 차단하게 된다.FIG. 3 is a circuit diagram illustrating an overload cutoff switch, and an overload and short detection circuit is a circuit for detecting and blocking an overload or a short circuit of an AC power supply connected to an AC line and connected to an AC line. M1) is connected to AC Hot, and the comparator detects an overload or a short included in the AC power, and when an overload or a short is detected, the transistor Q2 is operated to cut off the power supply.

도 4는 컨트롤회로를 나타낸 회로도로서, 컨트롤회로는 제 1 내지 제 n 릴레이를 동작시킴으로써 해당 채널로 전원을 출력하도록 제어하는데, 이때 시간별로 출력되도록 제어한다.4 is a circuit diagram illustrating a control circuit, in which the control circuit outputs power to a corresponding channel by operating the first to nth relays.

현재, 전원이 공급되고 있는지 여부는 파워램프(D3)를 통해 사용자에게 디스플레이하고, 콘덴서 C21 측 스위치는 제 1 내지 제 n 채널의 전원을 모두 턴온시키는 제어명령을 수행하고, 콘덴서 C20 측 스위치는 제 1 내지 제 8 채널의 전원을 모두 턴오프시키는 제어명령을 수행하도록 구성된다.Currently, whether power is being supplied is displayed to the user via the power lamp D3, the switch of the capacitor C21 side performs a control command to turn on the power of all the first to nth channels, and the switch of the capacitor C20 side And perform a control command to turn off power of all of the first to eighth channels.

포트 23번을 통해서는 도 3의 전류센서로부터 입력을 전달받아서 과부하 혹 은 단락이 발생되면 즉시 제 1 내지 제 8 채널의 전원을 모두 턴오프시키게 된다.Port 23 receives an input from the current sensor of FIG. 3 and immediately turns off the power of the first to eighth channels when an overload or a short circuit occurs.

도 5는 출력드라이버 및 방사선잡음및방송파 방지회로를 나타낸 회로도로서, U1 부분이 출력드라이버회로이고, U2 부분이 출력상태표시회로이며, AC2 내지 AC7 부분이 출력잡음방지회로이다.Fig. 5 is a circuit diagram showing an output driver and a radiation noise and broadcast wave prevention circuit, wherein the U1 portion is an output driver circuit, the U2 portion is an output state display circuit, and the AC2 to AC7 portions are output noise prevention circuits.

상기 출력드라이버회로와 연결된 출력잡음방지회로는 n채널 즉, 이론적으로 무한히 확장가능한 것이고, 도면에는 지면관계로 6채널만 예시하였으며, 각 채널에 구비된 출력잡음방지회로는 모두 동일한 기능을 수행하는데, 릴레이온오프노이즈, 라인입력노이즈, 30~300MHz에 이르는 방사선노이즈를 방지하기 위해 고주파필터링을 수행한다.The output noise prevention circuit connected to the output driver circuit is n-channel, that is, theoretically infinitely expandable, and only 6 channels are illustrated in the figure in relation to the ground, and the output noise prevention circuits provided in each channel all perform the same function. High frequency filtering is performed to prevent relay on / off noise, line input noise, and radiation noise of 30 ~ 300MHz.

상기 출력상태표시회로는 FND 또는 LED를 통해서 각 채널의 전원이 출력되고 있음을 사용자에게 디스플레이하는 기능을 수행한다.The output state display circuit performs a function of displaying to the user that the power of each channel is being output through the FND or the LED.

도 1은 본 발명에 따른 잡음 및 전자기장 방지기능을 가진 전원분배회로를 나타낸 블록도.1 is a block diagram showing a power distribution circuit having a noise and electromagnetic field protection function according to the present invention.

도 2는 본 발명의 스위칭모드파워회로부를 나타낸 회로도.Figure 2 is a circuit diagram showing a switching mode power circuit portion of the present invention.

도 3은 본 발명의 과부하 차단스위치를 나타낸 회로도.Figure 3 is a circuit diagram showing an overload cutoff switch of the present invention.

도 4는 본 발명의 출력전원을 제어하는 컨트롤회로를 나타낸 회로도.4 is a circuit diagram showing a control circuit for controlling the output power supply of the present invention.

도 5는 본 발명의 출력드라이버회로, 출력상태표시회로, 방사선잡음및방송파 방지회로를 나타낸 회로도.5 is a circuit diagram showing an output driver circuit, an output state display circuit, a radiation noise and a broadcast wave prevention circuit of the present invention.

<도면의 주요 부분에 대한 부호의 간단한 설명><Brief description of symbols for the main parts of the drawings>

11 ; 과부하 차단스위치 12 ; 파워모니터회로11; Overload disconnect switch 12; Power monitor circuit

13 ; 잡음및전자기장 방지회로 14 ; 스위칭모드 파워회로부13; Noise and electromagnetic field protection circuits 14; Switching Mode Power Circuit

15 ; 컨트롤회로 16 ; 방사선잡음 및 방송파방지회로15; Control circuit 16; Radiation Noise and Broadcast Wave Prevention Circuit

Claims (3)

삭제delete 공급전원에 직렬연결되고, 전류센서와 과전류를 차단하기 위한 서킷브레이커가 구비된 과부하 차단스위치(11);An overload cut-off switch 11 connected in series to a power supply and provided with a circuit breaker for blocking a current sensor and an overcurrent; 상기 차단스위치(11)의 후단에 병렬연결되고, 전류와 전압, 그리고 전력량을 측정하여 입력된 전원을 모니터링하는 파워모니터회로(12);A power monitor circuit 12 connected in parallel to a rear end of the cutoff switch 11 and monitoring an input power by measuring a current, a voltage, and an amount of power; 상기 파워모니터회로(12)의 후단에 병렬연결되고, 공급된 AC라인의 노이즈를 제거하기 위해 RC공진회로를 구비하여 인체에 유해한 저주파에 대한 필터링을 수행하는 잡음및전자기장방지회로(13);A noise and electromagnetic field protection circuit 13 connected in parallel to the rear end of the power monitor circuit 12 and having an RC resonant circuit to remove noise of the supplied AC line and performing filtering on low frequency harmful to a human body; 상기 파워모니터회로(12)의 후단에 병렬연결되고, 공급된 교류를 직류로 변환시키고, 부하가 연결되면 동작하여 대기전력을 줄인 스위칭모드파워회로부(14);A switching mode power circuit unit 14 connected in parallel to the rear end of the power monitor circuit 12, converting the supplied alternating current into direct current, and operating when a load is connected to reduce standby power; 상기 스위칭모드파워회로부(14)의 후단에 병렬연결되고, 상기 스위칭모드파워회로부(14)의 출력전원을 시간별로 제어하는 컨트롤회로(15);A control circuit 15 connected in parallel to a rear end of the switching mode power circuit unit 14 and controlling the output power of the switching mode power circuit unit 14 by time; 상기 컨트롤회로(15)의 후단에 병렬연결되고, 릴레이 온오프 노이즈, 방사선노이즈, 방송파, 출력전원에 포함된 잡음을 제거하기 위해 고주파필터링을 수행하는 방사선잡음및방송파 방지회로(16)를The radiation noise and broadcast wave prevention circuit 16 connected in parallel to the rear end of the control circuit 15 and performing high frequency filtering to remove noise included in relay on / off noise, radiation noise, broadcast wave, and output power is provided. 포함하고,Including, 상기 스위칭모드 파워회로부(14)는 중앙에 설치된 스위칭모듈을 기준으로 전단에는 WA2, 노이즈필터(NF1), 브리지다이오드(BD1), 사이리스터(TH1), 콘덴서(CY1)(C2)로 이루어진 EMI를 방지하기 위한 회로와, 후단에는 코일(L1)(L2), 정전압레귤레이터(Q1), 콘덴서들(C3)(C4)(C5)(C6)(C7)(C8)로 이루어진 파형필터로 이루어진 잡음 및 전자기장 방지기능을 가진 전원분배회로.The switching mode power circuit unit 14 prevents EMI composed of WA2, noise filter (NF1), bridge diode (BD1), thyristor (TH1), and capacitor (CY1) (C2) at the front end based on a switching module installed at the center. Noise and electromagnetic field consisting of a waveform filter consisting of a coil L1, L2, a constant voltage regulator Q1, and capacitors C3, C4, C5, C6, C7, and C8. Power distribution circuit with protection function. 제 2 항에 있어서,The method of claim 2, 상기 과부하 차단스위치(11)는 교류라인에 연결되어 외부로부터 공급된 교류전원의 과부하 혹은 단락을 감지하고 차단하기 위한 회로이고, 전압/전류감지소자(CT)(M1)가 교류전원(Ac Hot)에 연결되고, 이 교류전원 내부에 포함된 과부하 혹은 단락을 비교기에서 감지하여 과부하나 단락이 감지될 경우에는 트랜지스터(Q2)를 동작시켜 전원공급을 차단하는 잡음 및 전자기장 방지기능을 가진 전원분배회로.The overload cutoff switch 11 is a circuit connected to an AC line to detect and cut off an overload or a short circuit of an AC power supplied from the outside, and the voltage / current sensing element CT (M1) is an AC power source (Ac Hot). A power distribution circuit having a noise and electromagnetic field protection function that is connected to the power supply and cuts off the power supply by operating a transistor (Q2) when an overload or a short circuit is detected by a comparator.
KR1020090016843A 2009-02-27 2009-02-27 Power distribution circuit with noise and electromagnetic wave protection KR101046911B1 (en)

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Publication number Priority date Publication date Assignee Title
KR20220102363A (en) 2021-01-13 2022-07-20 주식회사 엠디엠 Line filter for noise reduction

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KR102599367B1 (en) * 2021-11-26 2023-11-08 엄연옥 Control signal noise removal device for internal combustion engine and noise removal system

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KR19990020703A (en) * 1997-08-30 1999-03-25 김형광 Gas pipe inverter eliminating high frequency noise and radiation noise
KR200241430Y1 (en) 2001-05-04 2001-10-12 한일의료기 주식회사 Noise and alternation electromagnetic waves reduction apparatus in electric matte
KR200367009Y1 (en) * 2004-08-11 2004-11-06 김태홍 Power distributor with safty switch
KR200407973Y1 (en) 2005-11-18 2006-02-06 진정윤 Active type noise remove apparatus

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KR19990020703A (en) * 1997-08-30 1999-03-25 김형광 Gas pipe inverter eliminating high frequency noise and radiation noise
KR200241430Y1 (en) 2001-05-04 2001-10-12 한일의료기 주식회사 Noise and alternation electromagnetic waves reduction apparatus in electric matte
KR200367009Y1 (en) * 2004-08-11 2004-11-06 김태홍 Power distributor with safty switch
KR200407973Y1 (en) 2005-11-18 2006-02-06 진정윤 Active type noise remove apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20220102363A (en) 2021-01-13 2022-07-20 주식회사 엠디엠 Line filter for noise reduction
KR20230020474A (en) 2021-01-13 2023-02-10 주식회사 엠디엠 Line filter for noise reduction

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