KR20060035883A - Only the ac the ballast which operates - Google Patents

Only the ac the ballast which operates Download PDF

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Publication number
KR20060035883A
KR20060035883A KR1020040084244A KR20040084244A KR20060035883A KR 20060035883 A KR20060035883 A KR 20060035883A KR 1020040084244 A KR1020040084244 A KR 1020040084244A KR 20040084244 A KR20040084244 A KR 20040084244A KR 20060035883 A KR20060035883 A KR 20060035883A
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South Korea
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voltage
supplied
ballast
power supply
circuit
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KR1020040084244A
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Korean (ko)
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송수민
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송수민
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
    • H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
    • H05B41/295—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices and specially adapted for lamps with preheating electrodes, e.g. for fluorescent lamps
    • H05B41/298—Arrangements for protecting lamps or circuits against abnormal operating conditions
    • H05B41/2981—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions
    • H05B41/2983—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions against abnormal power supply conditions
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
    • H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
    • H05B41/282—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices
    • H05B41/2825—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices by means of a bridge converter in the final stage
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
    • H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
    • H05B41/282—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices
    • H05B41/285—Arrangements for protecting lamps or circuits against abnormal operating conditions
    • H05B41/2851—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions
    • H05B41/2853—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions against abnormal power supply conditions

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  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

본 발명은 형광등과 같은 조명 램프에서 전류를 안정적으로 공급하기 위하여 필요로 하는 안정기에 관한 것으로, AC 전압상태에서만 동작 하여 조명램프를 점등시키는 교류(AC)전용 안정기에 관한 것이다.  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ballast required to stably supply current from an illumination lamp such as a fluorescent lamp, and more particularly to an alternating current (AC) ballast that operates only in an AC voltage state to light an illumination lamp.

일반적으로 AC용 안정기에 DC 전압을 공급하였을 경우 안정기의 스펙에 따라 점등이 되는 경우도 있으나 정상적인 점등이 이루어지지 않는 동작특성을 나타내며, DC가 공급되었을 경우 불안정한 동작을 보이므로 형광램프의 수명을 단축시키는 결과를 초래한다. 따라서 상용 전원(AC)으로 동작되고, 정전시 상용 전원대신에 비상 전원(DC)이 공급되는 전원 시스템이 구축된 상황에서, 정전상태에서 DC 전압이 안정기에 공급되는 경우가 발생하는 경우 앞에서 신뢰성있는 동작을 제공할 수 없다. Generally, when DC voltage is supplied to AC ballast, it may be turned on depending on the specifications of ballast, but it shows operating characteristic that is not turned on normally. When DC is supplied, it shows unstable operation and shortens the life of fluorescent lamp. Cause results. Therefore, when the power system is operated with commercial power (AC) and the emergency power (DC) is supplied instead of the commercial power in case of power failure, the DC voltage is supplied to the ballast in the power failure state. Can't provide an action.

본 발명은 안정기로 공급되는 DC전압을 차단하고 AC 전압만을 안정기로 공급시켜 정상적인 AC전압에서만 안정기가 동작될 수 있도록 하는 DC 전압 차단회로를 전압 입력단에 구성하므로써, 안정된 형광램프의 동작 및 신뢰성있는 안정기를 제공할 수 있도록 한다. The present invention blocks the DC voltage supplied to the ballast and supplies only the AC voltage to the ballast so that the ballast can be operated only at the normal AC voltage. To provide.

안정기, 형광램프, 형광등, AC안정기 Ballast, Fluorescent Lamp, Fluorescent Lamp, AC Stabilizer

Description

교류 전용 안정기{Only the AC the ballast which operates}Only the AC the ballast which operates}

도 1은 본 발명 교류 전용 안정기1 is the AC ballast exclusively for the present invention

도 2는 본 발명 교류 전용 안정기에 있어서, DC 차단회로의 구성을 나타낸 회로도.2 is a circuit diagram showing the configuration of a DC blocking circuit in the AC ballast exclusively according to the present invention.

본 발명은 형광등과 같은 조명 램프에서 전류를 안정적으로 공급하기 위하여 필요로 하는 안정기에 관한 것으로, AC 전압상태에서만 동작 하여 조명램프를 점등시키는 교류(AC)전용 안정기에 관한 것이다. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ballast required to stably supply current from an illumination lamp such as a fluorescent lamp, and more particularly to an alternating current (AC) ballast that operates only in an AC voltage state to light an illumination lamp.

일반적으로 실내와 조명등 기구의 경우, 조명등으로 필라멘트에서 저항을 발생하게 하여 빛을 발생하게 하는 백열등 또는 유리관 내부에 가스나 형광물질을 충전하고 충전된 형광물질에 방전을 시키므로서, 빛을 발생시키는 형광등을 사용한다.In general, indoor and lighting fixtures, a fluorescent lamp that generates light by charging gas or fluorescent material inside an incandescent lamp or glass tube that generates resistance in a filament with a lighting lamp, and then discharges the charged fluorescent material. Use

이와 같은 형광등과 같은 형광램프류의 경우 저압, 수은증기 속에서의 방전에 의해 발광하므로써, 전류가 흐르면 방전에 필요한 전압이 떨어지는 현상이 발생하고, 따라서 일정한 전압을 가하여 방전을 일으키게 되며, 이때 전류가 지나치게 증가하면, 램프가 파괴될 염려가 있으므로, 전류를 안정적으로 공급하기 위하여 안정기를 필요로 한다.In the case of fluorescent lamps such as fluorescent lamps, light emitted by discharge in a low pressure and mercury vapor causes a phenomenon in which a voltage required for discharge drops when a current flows, thus causing a discharge by applying a constant voltage. If increased, the lamp may be destroyed, and therefore, a ballast is required to stably supply current.

즉, 상기에서 설명한 바와 같이, 형광등이나 수은등과 같은 방전등은 아크방전에 의한 발광을 이용하고 있는데, 램프의 전압을 그대로 인가해서 아크방전을 일으키면 전류가 계속 증가하며(負荷特性), 이것이 지나치게 증가하면 램프가 파괴되어 버린다. That is, as described above, a discharge lamp such as a fluorescent lamp or a mercury lamp uses light emission by arc discharge. When an arc discharge is generated by applying the voltage of the lamp as it is, the current continues to increase. The lamp will be destroyed.

이런 상태를 방지하기 위해 전류를 제어하여 방전을 안정시키도록 램프에 직렬로 접속시켜서 사용하는 장치를 안정기(Ballast)라고 한다. In order to prevent such a condition, a device that is connected in series with a lamp to control a current to stabilize a discharge is called a ballast.

안정기에는 저항, 유도(초크코일) 또는 용량(콘덴서)의 각 회로 중 어느 하나를 사용하거나, 이것들을 조합시킨 것을 사용한다. As the ballast, any one of the circuits of resistance, induction (choke coil) or capacitance (capacitor) is used, or a combination thereof is used.

스타터(시동기)가 안정기에 부속된 것도 있다. 실제로는 초크코일, 초크코일과 콘덴서를 조합시킨 것, 변압 초크코일과의 작용을 조합시킨 자기 누설변압기형이 많이 이용되고 있다. 또 방전등을 고주파 점등함으로써 코일을 작게 하거나, 모든 것을 전자회로로 만든 가볍고(종래의 1/3 정도) 전력손실이 적은 안정기가 만들어져 실용화되고 있다. Some starters are attached to the ballast. In practice, a magnetic leak transformer type in which a choke coil, a combination of a choke coil and a condenser, and a combination of a transforming choke coil is used is widely used. In addition, high-frequency lighting of the discharge lamp makes the coil smaller or lighter (all of the conventional 1/3) made of electronic circuits, and has a low power loss ballast.

이와 같은 안정기는 AC용 안정기와 DC용 안정기로 구분할 수 있으며, AC용 안정기는 일반 사용 교류 전압을 인가 받아 동작하는 것으로, 실내등이나 가로등에 적용되고, DC용 안정기는 DC충전 배터리를 내장하고, 배터리로부터 공급되는 DC 전압에 따라 동작하는 것으로, 휴대용 전등, 비상등에 적용된다. Such ballasts can be divided into AC ballasts and DC ballasts. AC ballasts are operated by applying AC voltage for general use, and are applied to indoor lights or street lamps. DC ballasts have a DC charging battery and It operates in accordance with the DC voltage supplied from, and is applied to portable light and emergency light.

일반적으로 AC용 안정기에 DC 전압을 공급하였을 경우 안정기의 스펙에 따라 점등이 되는 경우도 있으나 정상적인 점등이 이루어지지 않는 동작특성을 나타낸다.Generally, when DC voltage is supplied to AC ballast, it may be turned on depending on the ballast's specifications.

또한 AC용 안정기는 DC가 공급되었을 경우 불안정한 동작을 보이므로 형광램프의 수명을 단축시키는 결과를 초래한다. In addition, AC ballast shows unstable operation when DC is supplied, resulting in shortening the life of fluorescent lamps.

따라서 상용 전원(AC)으로 동작되고, 정전시 상용 전원대신에 비상 전원(DC)이 공급되는 전원 시스템이 구축된 상황에서, 정전상태에서 DC 전압이 안정기에 공급되는 경우가 발생하는 경우 앞에서 기술한 바와 같은 문제가 발생한다. Therefore, when a power system operating with a commercial power supply (AC) and supplying an emergency power supply (DC) instead of a commercial power supply in the event of a power failure has been constructed, a DC voltage is supplied to a ballast in a power failure state. The same problem occurs.

본 발명에서는 이와 같은 문제를 감안하여 공급되는 DC전압을 차단하고 AC 전압만을 안정기회로에 공급시켜 정상적인 AC전압에서만 안정기가 동작될 수 있도록 하는 DC 전압 차단회로를 구성하므로써, 안정된 형광램프의 동작 및 신뢰성있는 안정기를 제공할 수 있도록 한 것이다. In view of the above problems, the present invention provides a stable operation of the fluorescent lamp by cutting off the supplied DC voltage and supplying only the AC voltage to the ballast circuit so that the ballast can be operated only at the normal AC voltage. It is to provide a ballast.

본 발명은, 정상상태에서 상용 AC 전원 전압이 공급되고, 정전시 상용 전원이 차단되고, 비상 DC전원 전압을 공급하는 전원시스템과 연결되며,The present invention is connected to a power supply system for supplying a commercial AC power supply voltage in a normal state, the commercial power supply is cut off in case of power failure, and supplies an emergency DC power supply voltage,

공급된 전원전압을 검출하고, 그 검출된 전원전압이 상용 전원 전압인 AC인 경우에는 안정화회로를 동작시켜 형광램프를 점등시키고, 비상 전원으로부터 공급된 DC 전원 전압인 경우에는 차단하여 안정화 회로를 동작정지 시켜 형광램프가 동작되지 않도록 하는 DC 차단회로를 포함하여 구성된 것을 특징으로 한다. When the supplied power supply voltage is detected and the detected power supply voltage is AC, which is a commercial power supply voltage, the stabilization circuit is operated to turn on the fluorescent lamp, and when it is a DC power supply voltage supplied from the emergency power supply, the stabilization circuit is operated. It characterized in that it comprises a DC blocking circuit for stopping the fluorescent lamp is not operated.

이와 같은 특징을 갖는 본 발명을 첨부된 도면 도 1과 도 2에 도시된 실시예 를 참조하여 그 구성 및 동작을 설명하면 다음과 같다. The configuration and operation of the present invention having such features will be described below with reference to the embodiments illustrated in FIGS. 1 and 2.

정상상태에서 상용전원을 공급하고, 정전시 비상전원(DC)을 공급하는 분전반(10)이 구성되고, 사용자가 형광램프를 점등시키기 위한 스위치(20)와, 분전반(10)을 통해 전원 전압을 공급받고, 공급된 전원 전압이 상용 전원 전압인 AC인 경우에는 안정화회로(40)로 공급하고, 비상 전원으로부터 공급된 DC 전원 전압이 경우에는 차단하는 DC 차단회로(DC Protection)(30)와, DC차단회로(30)로부터 공급된 AC 전원 전압에 따라 형광램프를 점등시키는 안정화회로(40)를 포함하여 구성된다. The distribution panel 10 is configured to supply commercial power in a normal state and to supply emergency power (DC) in case of a power failure, and the user may switch the power supply voltage through the switch 20 and the distribution panel 10 to turn on the fluorescent lamp. A DC protection circuit 30 which is supplied to the stabilization circuit 40 when the supplied power supply voltage is AC which is a commercial power supply voltage, and cuts off the DC power supply voltage supplied from the emergency power supply; And a stabilization circuit 40 for lighting the fluorescent lamp in accordance with the AC power supply voltage supplied from the DC blocking circuit 30.

그리고, 상기 DC 차단회로(30)는 도 2에 도시된 바와 같이, 입력되는 전원 전압을 안정기회로에 스위칭 공급하는 전원 스위칭 릴레이(RY1)와, 공급된 전원 전압에 있어 DC 전압은 컷오프(cut off) 시키고, AC전압만을 통과시켜 브릿지 정류부(32)의 동작 전압으로 공급하기 위한 DC차단부(31)와, 공급된 AC 전원전압에 의해 동작되고, 공급된 AC 전압을 정류하여 상기 릴레이(RY1)를 동작시켜 안정화회로(40)에 분전반(10)으로부터 공급된 전원입력단(P1,P2)의 전압을 공급 제어하는 브릿지 정류부(32)를 포함하여 구성된다.As shown in FIG. 2, the DC blocking circuit 30 includes a power switching relay RY1 for switching and supplying an input power supply voltage to a ballast circuit, and a DC voltage is cut off in the supplied power supply voltage. And a DC blocking unit 31 for supplying only the AC voltage to the operating voltage of the bridge rectifying unit 32 and the supplied AC power voltage, rectifying the supplied AC voltage to rectify the relay RY1. It is configured to include a bridge rectifier 32 for controlling the supply of the voltage of the power input terminal (P1, P2) supplied from the distribution panel 10 to the stabilization circuit (40).

이와 같은 본 발명 교류 전용 안정기는, Such AC ballast for the present invention,

정상상태에서는 상용 AC 전원을 공급하고, 정전시 비상전원 전압 DC를 공급하도록 분전반(10)이 구성된 전원시스템에 적용되며, 분전반(10)을 통해 공급되는 AC 전원 전압에 의해서만 동작가능 하도록 하는 DC 차단회로(30)가 분전반(10)과 연결되는 전원 입력단(P1,P2)에 구성된다. It is applied to a power system in which the distribution panel 10 is configured to supply commercial AC power in a normal state and supply emergency power voltage DC in case of a power failure, and to block the DC to operate only by the AC power voltage supplied through the distribution panel 10. The circuit 30 is configured at the power input terminals P1 and P2 connected to the distribution panel 10.

DC 차단회로(30)는 전원 입력단(P1,P2)을 통해 공급되는 전원을 스위칭하여 안정화회로(40)에 공급하기 위한 스위칭수단으로서 릴레이(RY1), 그리고 릴레이(RY1)를 동작제어하기 위한 DC차단부(31), 브릿지 정류부(32)로 구성된다.The DC blocking circuit 30 is a switching means for switching the power supplied through the power input terminals P1 and P2 and supplying it to the stabilization circuit 40. The DC for operating the relay RY1 and the relay RY1 is controlled. It is comprised from the interruption | blocking part 31 and the bridge rectification part 32. As shown in FIG.

DC차단부(31)는 전원 입력단(P1,P2)을 통해 공급되는 전원 전압에 있어서, AC 전원만을 통과시키고, DC를 컷오프시키기 위한 콘덴서(C1)와 저항(R1)을 포함하는 RC 필터회로로 구성된다.DC cut-off unit 31 is a RC filter circuit including a capacitor (C1) and a resistor (R1) for passing the AC power only, and cuts off the DC at the power supply voltage supplied through the power input terminals (P1, P2). It is composed.

그리고 정류회로로써 구성된 상기 브릿지 정류부(32)는 AC 전원을 정류하여 상기 릴레이(RY1)의 스위칭 동작 제어전압 생성하기 위한 것으로, 브릿지 다이오드(BD1) 및 정전압 제너다이오드(ZD1), 평활용 콘덴서(C1), 다이오드( D1)를 포함하는 정류회로로 구성된다.The bridge rectifier 32 configured as a rectifier circuit is for rectifying AC power to generate a switching operation control voltage of the relay RY1. ), And a rectifier circuit including a diode D1.

안정화회로(40)는 형광램프를 점등시키기 위한 일반적인 안정기회로로 구성되는 것으로 본 실시예에서는 구체적인 회로를 도시하지는 않는다.The stabilization circuit 40 is composed of a general ballast circuit for turning on the fluorescent lamp and does not show a specific circuit in this embodiment.

이와 같은 구성을 갖는 본 발명 교류 전용 안정기의 동작을 설명하면 다음과 같다. Referring to the operation of the AC ballast dedicated to the present invention having such a configuration as follows.

사용자가 스위치(20)를 온(ON)시키면, 분전반(10)을 통해 공급된 전원전압은 DC 차단회로(30)로 공급되고, DC차단회로(30)에서 공급된 전원 전압을 검출하여, DC 전압은 차단하고 AC 전압인 경우에만 안정화회로(40)로 공급된 전원전압을 공급하여 형광램프를 점등시킨다.When the user turns on the switch 20, the power supply voltage supplied through the distribution panel 10 is supplied to the DC blocking circuit 30, and detects the power supply voltage supplied from the DC blocking circuit 30. The voltage is cut off and the fluorescent lamp is turned on by supplying the power supply voltage supplied to the stabilization circuit 40 only when the voltage is AC.

즉, DC 전원이 공급되는 경우에는 안정회회로(40)가 동작되지 못하도록 하여 형광램프를 점등시키지 않는 것이다. In other words, when the DC power is supplied, the fluorescent circuit 40 is not operated so that the fluorescent lamp is not turned on.

이의 동작과정을 상세히 설명하면 다음과 같다.The operation process thereof is described in detail as follows.

분전반(10)을 통해 공급된 전원전압이 릴레이(RY1)로 공급되고, 공급되는 전원 전압(AC 또는 DC)에 따라 스위칭 동작되는 릴레이(RY1)를 통해 안정화회로(40)로 공급된다.The power supply voltage supplied through the distribution panel 10 is supplied to the relay RY1 and supplied to the stabilization circuit 40 through the relay RY1 which is switched according to the supplied power supply voltage AC or DC.

정상 상태에서는 분전반(10)을 통해 상용전원 AC전압이 공급되고, 정전과 같이 상용전원이 문제가 발생하게 되면, 비상전원으로부터 DC 전압이 공급된다.In the normal state, the commercial power supply AC voltage is supplied through the distribution panel 10, and when the commercial power supply has a problem such as a power failure, the DC voltage is supplied from the emergency power supply.

먼저, 정상 상태에서는 사용자가 스위치(20)를 온(ON) 시킨 상태에서 분전반(10)을 통해 DC차단회로(30)의 릴레이(RY1)로 공급된다.First, in the normal state, the user is supplied to the relay RY1 of the DC blocking circuit 30 through the distribution panel 10 while the user turns the switch 20 ON.

이와 같이 공급된 상용 전원은 릴레이(RY1)를 통해 안정화회로(40)로 공급되는 바, The commercial power supplied in this way is supplied to the stabilization circuit 40 through the relay (RY1),

이때 공급되는 AC 전원 전압은 DC 차단부(31)로 공급되고, DC차단부(31)를 통해 브릿지 정류부(32)로 공급된다. At this time, the supplied AC power voltage is supplied to the DC blocking unit 31, and is supplied to the bridge rectifying unit 32 through the DC blocking unit 31.

브릿지 정류부(32)에서는 공급된 AC 전압을 정류하여 릴레이(RY1)를 동작시켜 상기에서와 같이 분전반(10)을 통해 공급된 상용 전원(AC) 전압을 안정화회로(40)로 공급한다.The bridge rectifier 32 rectifies the supplied AC voltage to operate the relay RY1 to supply the commercial power AC voltage supplied through the distribution panel 10 to the stabilization circuit 40 as described above.

안정화회로(40)는 형광램프를 점등시킨다.The stabilization circuit 40 turns on the fluorescent lamp.

한편, 비상 상태에서는 분전반(10)을 통해 릴레이(RY1)로 비상전원 DC 전압이 공급된다. In the emergency state, the emergency power DC voltage is supplied to the relay RY1 through the distribution panel 10.

이때 공급된 DC 전압은 DC 차단부(31)의 콘덴서(C1)에 의해 차단되어 브릿지 정류부(32)로 공급되지 못한다.At this time, the supplied DC voltage is blocked by the capacitor C1 of the DC blocking unit 31 and cannot be supplied to the bridge rectifying unit 32.

따라서, 브릿지 정류부(32)로부터 릴레이(RY1)의 동작 전압이 생성되지 못하 게 되므로써, 상기 릴레이(RY1)를 통해 비상 전원이 안정화회로(40)로 공급되지 못한다.Therefore, since the operating voltage of the relay RY1 is not generated from the bridge rectifier 32, emergency power is not supplied to the stabilization circuit 40 through the relay RY1.

그러므로, 안정화회로(40)에 어떠한 전압도 전달되지 못하므로, 형광램프는 점등되지 못한다.Therefore, since no voltage is transmitted to the stabilization circuit 40, the fluorescent lamp cannot be turned on.

다시 말하면, 공급된 상용전원 AC 전압에 의해 브릿지 정류부(32)로부터 DC전압이 생성되면 릴레이(RY1)의 코일에 전류가 흘러 여자 되므로써, 스위치 접접이 NO 상태로 되므로, 안정화회로(40)로 분전반(10)으로부터 공급된 AC전압이 공급된다.In other words, when a DC voltage is generated from the bridge rectifier 32 by the supplied commercial power AC voltage, current flows through the coil of the relay RY1, so that the switch contact is in the N O state, and thus, the stabilization circuit 40 is provided. The AC voltage supplied from the distribution panel 10 is supplied.

그러나 분전반(10)으로부터 비상 DC 전원이 공급되는 경우에는 콘덴서(C1)에의해 DC 전압이 차단되므로, 브릿지 정류부(32)로부터 릴레이(RY1)를 동작시키기 위한 DC 동작전압이 생성되지 못하게 되므로, 릴레이(RY1)의 스위치 접접이 NC 상태를 유지하게 되므로, 안정화 회로(40)로 비상전원이 공급되지 않게 된다.However, when the emergency DC power is supplied from the distribution panel 10, the DC voltage is cut off by the capacitor C1, so that the DC operating voltage for operating the relay RY1 from the bridge rectifier 32 cannot be generated. Since the switch contact of RY1 maintains the N C state, emergency power is not supplied to the stabilization circuit 40.

따라서 안정화회로는 동작하지 않게 되어 형광램프는 점등되지 않는다.Therefore, the stabilization circuit does not operate and the fluorescent lamp does not light up.

이상에서 설명한 바와 같이, 본 발명은 형광램프를 점등시키기 위한 안정화회로(안정기회로)의 전단에 DC 차단회로(DC Protector)를 구성하여 AC에서만 동작 가능한 안정기 설계하고자 한 것으로, As described above, the present invention is to design a ballast that can operate only in AC by configuring a DC protector (DC Protector) in front of the stabilization circuit (stabilizer circuit) for turning on the fluorescent lamp,

비상시 DC 전압이 공급되는 전원시스템에 적용할 경우 DC가 공급되는 비상상태에서도 배터리의 방전을 방지할 수 있다. When applied to a power system supplied with a DC voltage in an emergency, it is possible to prevent the battery from being discharged even in an emergency state where a DC is supplied.                     

또한, 동작상태에서 상시 안정된 안정기 회로의 상태를 유지하여 설계된 형광램프의 수명을 유지시켜 줄 수 있는 효과를 갖는다.In addition, it has the effect of maintaining the life of the designed fluorescent lamp by maintaining the state of the ballast circuit stable at all times in the operating state.

Claims (3)

공급된 전원전압을 검출하고, 그 검출된 전원전압이 상용 전원 전압인 AC인 경우에는 안정화회로를 동작시켜 형광램프를 점등시키고, 공급된 전원 전압이 DC인 경우에는 차단하여 안정화 회로를 동작 정지시켜 형광램프가 점등되지 않도록 하는 DC 차단회로를 포함하여 구성된 것을 특징으로 하는 교류 전용 안정기.When the supplied power supply voltage is detected and the detected power supply voltage is AC, which is a commercial power supply voltage, the stabilization circuit is operated to turn on the fluorescent lamp. When the supplied power supply voltage is DC, the fluorescent lamp is shut off to stop the stabilization circuit. AC ballast characterized in that it comprises a DC circuit for preventing the fluorescent lamp is turned on. 제 1항에 있어서, 상기 DC 차단회로는 입력되는 전원 전압을 안정화회로에 스위칭 공급하는 전원 스위칭 수단과, 공급된 전원 전압에 있어 DC 전압은 컷오프(cut off) 시키고, AC전압만을 통과시켜 정류회로의 동작 전압으로 공급하기 위한 DC차단부와, 공급된 AC 전원전압에 의해 동작되고, 공급된 AC 전압을 정류하여 상기 전원스위칭수단을 동작시켜 안정화회로에 공급된 전원 입력단의 전압을 공급 제어하는 정류회로를 포함하여 구성되는 것을 특징으로 하는 교류 전용 안정기. 2. The DC circuit according to claim 1, wherein the DC blocking circuit includes a power switching means for switching and supplying an input power supply voltage to a stabilization circuit, and a DC voltage is cut off from the supplied power supply voltage, and only the AC voltage passes through the rectification circuit. A rectifier for supplying and controlling the voltage of the power input terminal supplied to the stabilization circuit by operating the power switching means by rectifying the supplied AC voltage and operating by the supplied AC power supply voltage and the supplied AC power supply voltage. AC ballast, characterized in that configured to include a circuit. 제 2항에 있어서, 상기 DC차단부는 입력되는 DC전압을 차단하기 위한 콘덴서(C1)와 저항(R1)을 포함하는 RC회로로 구성된 것을 특징으로 하는 교류 전용 안정기.The ballast of claim 2, wherein the DC blocking unit comprises an RC circuit including a capacitor (C1) and a resistor (R1) for blocking an input DC voltage.
KR1020040084244A 2004-10-21 2004-10-21 Only the ac the ballast which operates KR20060035883A (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06196271A (en) * 1992-12-22 1994-07-15 Tokyo Electric Co Ltd Guide lamp lighting device
KR980007865A (en) * 1998-01-08 1998-03-30 김창흥 Overcurrent protection circuit of electronic ballast and its reset method
KR19980020396A (en) * 1996-09-09 1998-06-25 손욱 Ballast Circuit for High Power Factor Compact Fluorescent Lamps
KR19990022173A (en) * 1996-04-04 1999-03-25 모토로라, 인크 Electronic ballast
KR20030039579A (en) * 2001-11-13 2003-05-22 장문환 Apparatus for controlling fluorescent lamp combined use as power supplies and electric power interruption

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06196271A (en) * 1992-12-22 1994-07-15 Tokyo Electric Co Ltd Guide lamp lighting device
KR19990022173A (en) * 1996-04-04 1999-03-25 모토로라, 인크 Electronic ballast
KR19980020396A (en) * 1996-09-09 1998-06-25 손욱 Ballast Circuit for High Power Factor Compact Fluorescent Lamps
KR980007865A (en) * 1998-01-08 1998-03-30 김창흥 Overcurrent protection circuit of electronic ballast and its reset method
KR20030039579A (en) * 2001-11-13 2003-05-22 장문환 Apparatus for controlling fluorescent lamp combined use as power supplies and electric power interruption

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