KR920002098B1 - Discharge circuit for pulse power discharge lamps - Google Patents

Discharge circuit for pulse power discharge lamps Download PDF

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Publication number
KR920002098B1
KR920002098B1 KR1019890018357A KR890018357A KR920002098B1 KR 920002098 B1 KR920002098 B1 KR 920002098B1 KR 1019890018357 A KR1019890018357 A KR 1019890018357A KR 890018357 A KR890018357 A KR 890018357A KR 920002098 B1 KR920002098 B1 KR 920002098B1
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South Korea
Prior art keywords
discharge
circuit
scintillator
tube
discharge circuit
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KR1019890018357A
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Korean (ko)
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KR910014008A (en
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이종민
김철중
정진만
김수성
김정묵
김광석
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재단법인 한국에너지연구소
한필순
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Priority to KR1019890018357A priority Critical patent/KR920002098B1/en
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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
    • H05B41/30—Circuit arrangements in which the lamp is fed by pulses, e.g. flash lamp

Abstract

a discharge maintaining power source (3) and a discharge circuit (6), both of them being connected through diodes to an anode (A) of a glow discharge tube (1); and a discharge circuit (7) also connected to the glow discharge tube (1). With the circuit, the pulsed operational voltages of the glow discharge tube (1) is lowered, and the minimum operation voltage of the glow discharge tube is lowered without significantly increasing the average current for maintaining the glow discharge.

Description

펄스형 섬광관의 동작 전압 가변영역을 넓게하기 위한 방전회로Discharge circuit for widening operating voltage variable region of pulse type flash tube

제1도는 방전 유지 전류(simmer)를 이용하여 고반복율로 동작하는 레이저용 섬광관의 일반적인 전원회로도.1 is a general power circuit diagram of a laser scintillator tube operating at a high repetition rate by using a discharge holding current (simmer).

제2도는 펄스형 섬광관의 동작 전압 가변 영역을 넓게하기 위한 예비 방전회로가 추가된 섬광관 전원 회로도.2 is a flash tube power supply circuit diagram in which a preliminary discharge circuit is added to widen an operating voltage variable region of a pulsed flash tube.

제3도는 예비 방전회로가 추가된 섬광관 전원장치에서 예비 방전 수행시의 섬광관 양단간의 전압 전류 파형도.3 is a voltage and current waveform diagram between both ends of the flash tube when preliminary discharge is performed in the flash tube power supply device to which the preliminary discharge circuit is added.

본 발명은 펄스형 섬광관의 동작전압 가변영역을 넓게 하기 위하여 예비 방전회로를 추가한 방전회로의 창출에 관한 것이다.The present invention relates to the creation of a discharge circuit in which a preliminary discharge circuit is added to widen the operating voltage variable region of a pulsed scintillator tube.

고반복의 펄스로 동작하는 섬광관의 일반적인 동작회로는 제1도와 같이 섬광관(1)의 충전전원(2)과 방전 유지 전원(3)이 인가되어 있고 아노드(A)에 레이트 제네레이타(RG)가 연결되어 있으며 방전 유도선(4)에 펄스제네레이타(5)가 인가되어 있는데 이때 섬광관의 최대 동작전압은 섬광관의 종류와 구조에 의하여 결정되며, 최소 동작전압은 방전유지전류가 흐를때 두 전극간의 전압으로 결정된다.In the general operation circuit of the scintillator tube operated by a high repetitive pulse, as shown in FIG. 1, the charging power source 2 and the discharge sustaining power source 3 of the scintillator tube 1 are applied, and the rate generator is applied to the anode A. RG) is connected and the pulse generator 5 is applied to the discharge induction line 4, where the maximum operating voltage of the scintillator is determined by the type and structure of the scintillator and the minimum operating voltage is the discharge holding current. Is determined by the voltage between the two electrodes.

방전유지전류 크기와 최소 동작전압과의 관계는 섬광관 마다 다소의 차이는 있으나 최소 동작전압을 낮추기 위하여 방전유지 전류를 증가 시켜야 하며 이때 과도한 발열과 전력 소모가 있게 된다.The relationship between the magnitude of the discharge holding current and the minimum operating voltage is slightly different for each flash tube, but the discharge holding current must be increased to lower the minimum operating voltage, resulting in excessive heat generation and power consumption.

제2도는 이러한 점을 개선하기 위한 예비방전 회로를 추가하여 적은 평균 전류로도 충분히 낮은 최소 동작전압을 얻을 수 있는 회로도인데 방전 유지전원(3)과 주방전회로(6)에 다이오드를 경유 섬광관(1)의 아노드(A)에 연결함과 동시 예비 방전회로(7)을 연결시킨 회로로서 예비 방전회로(7)이 주방전 개시에 앞서서 수 10A의 예비 방전을 일으켜 섬광관(1)의 양단 전압을 수 10V이하로 낮출 수 있다.FIG. 2 is a circuit diagram in which a minimum operating voltage can be obtained with a low average current by adding a pre-discharge circuit to improve this point. A flash tube via a diode is provided in the discharge sustaining power source 3 and the discharging circuit 6. The circuit connected to the anode A of (1) and the preliminary discharge circuit 7 at the same time. The preliminary discharge circuit 7 causes several 10A of pre-discharges prior to the start of the discharging of the scintillator tube. The voltage at both ends can be reduced below several 10V.

섬광관의 특성상 수 10A의 예비 방전시에 생성된 섬광관 내부의 전기전도성이 수백 US동안 지속되므로 예비 방전과 주방전의 시간 지연이 아주 정확하지 않아도 주 방전을 낮은 동작 전압하에서 동작시킬 수 있다.Due to the nature of the scintillator, the electrical conductivity inside the scintillator generated during the preliminary discharge of several 10A lasts for several hundred US, so that the main discharge can be operated under a low operating voltage even if the time delay between the preliminary discharge and the kitchen is not very accurate.

펄스형 섬광관을 낮은 전압 영역까지 동작시킬 수 있는 것은 단일 구성으로도 광범위한 출력을 낼 수 있어 사용 영역이 확대된다.The ability to operate the pulsed scintillator down to the low voltage range allows for a wide range of outputs in a single configuration, thus extending the area of use.

본 회로에서 방전유지 전류를 단지 섬광관 내부에 방전이 지속될 수 있을 정도의 적은 전류로도 충분하며 따라서 전체적인 발열을 적게 할 수 있다. 예비 방전회로의 사용전압은 앞서 기술한 방전 유지전류로 인한 섬광관 양단간의 전압 이상이어야 하며 수 UF이하의 용량을 가진 축전기에 충전된 전기를 SCR로 방전시켜 얻는다.In this circuit, the discharge holding current is sufficient to have only a small current enough to sustain the discharge inside the scintillator tube, thus reducing the overall heat generation. The voltage used in the preliminary discharge circuit must be equal to or higher than the voltage across the flash tube due to the discharge holding current described above, and is obtained by discharging the electricity charged in a capacitor with a capacity of several UF or less by SCR.

제3도는 이러한 예비 방전회로를 동작시켰을때 섬광관 양단의 전압 파형을 나타낸 것인데 13A의 예비 방전으로 양단간의 전압을 일시적으로 25V까지 내릴 수 있었다. 제3도에서 섬광관의 동작전압을 100V로 하였을때 예비 방전후 주방전 개시까지의 여유시간은 대략 500US정도가 되어 동작시간 여유도는 충분하다.Figure 3 shows the voltage waveform across the scintillator tube when the preliminary discharge circuit was operated. The preliminary discharge of 13A allowed the voltage between both ends to be temporarily reduced to 25V. In FIG. 3, when the operating voltage of the scintillator tube is set to 100 V, the allowable time from the preliminary discharge to the start of the discharging is approximately 500 US, which is sufficient.

한편, 수 10A이 예비 방전 이후에 있는 주 방전시 예비방전때 섬광관 내부에 생성된 전기 전도성에 의하여 주방전 전류 상승이 빠르게 되며 예비 방전회로가 없는 경우에 비하여 폭이 좁은 펄스형으로 동작시키기가 용이한 효과가 있는 것이다.On the other hand, the electrical current generated in the scintillator tube during the pre-discharge during the main discharge after the number 10A after the pre-discharge increases the discharging current rapidly, and it is difficult to operate in a narrow pulse type compared to the case where there is no pre-discharge circuit. There is an easy effect.

Claims (1)

방전유지전원(3)과 주 방전회로(6)에 다이오드를 경유 섬광관(1)의 아노드(A)에 연결함과 동시 예비 방전회로(7)를 연결시킴으로서 펄스형 섬광관의 최저 동작전압을 낮추고 방전 유지 전류의 평균치를 증가시키지 않고 섬광관의 최소 동작전압을 낮추게 함을 특징으로 하는 펄스형 섬광관의 동작 전압가변 영역을 넓게 하기 위한 방전회로.The minimum operating voltage of the pulsed scintillator by connecting a diode to the anode (A) of the diesel scintillator (1) and the simultaneous preliminary discharge circuit (7) to the discharge holding power source (3) and the main discharge circuit (6). And a minimum operating voltage of the flash tube without lowering the average value of the discharge holding current.
KR1019890018357A 1989-12-12 1989-12-12 Discharge circuit for pulse power discharge lamps KR920002098B1 (en)

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Application Number Priority Date Filing Date Title
KR1019890018357A KR920002098B1 (en) 1989-12-12 1989-12-12 Discharge circuit for pulse power discharge lamps

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Application Number Priority Date Filing Date Title
KR1019890018357A KR920002098B1 (en) 1989-12-12 1989-12-12 Discharge circuit for pulse power discharge lamps

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KR910014008A KR910014008A (en) 1991-08-08
KR920002098B1 true KR920002098B1 (en) 1992-03-10

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