JPH05174988A - Drive circuit for strobe device - Google Patents

Drive circuit for strobe device

Info

Publication number
JPH05174988A
JPH05174988A JP34322991A JP34322991A JPH05174988A JP H05174988 A JPH05174988 A JP H05174988A JP 34322991 A JP34322991 A JP 34322991A JP 34322991 A JP34322991 A JP 34322991A JP H05174988 A JPH05174988 A JP H05174988A
Authority
JP
Japan
Prior art keywords
circuit
supplied
drive circuit
diode
discharge tube
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP34322991A
Other languages
Japanese (ja)
Inventor
Ko Yoshimoto
洸 吉元
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MINIKAMU RES KK
Original Assignee
MINIKAMU RES KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MINIKAMU RES KK filed Critical MINIKAMU RES KK
Priority to JP34322991A priority Critical patent/JPH05174988A/en
Publication of JPH05174988A publication Critical patent/JPH05174988A/en
Pending legal-status Critical Current

Links

Landscapes

  • Stroboscope Apparatuses (AREA)
  • Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)

Abstract

PURPOSE:To solve a problem of durability or the like for a switching element or the like. CONSTITUTION:Power from a converter circuit 1 is supplied to a parallel circuit of a coil 3 and a diode 4 through a diode 2 and supplied to a main capacitor 5 through this parallel circuit. The power from the converter circuit 1 is supplied to, for instance, a xenon discharge tube 6 through the diode 2, and an IGBT (insulating gate type bipolar transistor) 7 is provided as a switching element in series to this xenon discharge tube 6. Further, a drive signal from a drive circuit 9 is supplied to this IGBT7 through a resistor 8. In this circuit, a time- division drive signal is supplied to the IGBT7 from the drive circuit 9.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、例えばスイッチング素
子としてIGBT(絶縁ゲート型バイポーラトランジス
タ)を用いるストロボ装置の駆動回路に関するものであ
る。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drive circuit for a strobe device using an IGBT (insulated gate bipolar transistor) as a switching element, for example.

【0002】[0002]

【従来の技術】例えば写真撮影用のストロボ装置におい
て、発光管に直列に接続されるスイッチング素子として
IGBT(絶縁ゲート型バイポーラトランジスタ)を用
いることが検討されている。ところでこのようなIGB
Tは、最大電流規定が1msで規定されている。しかし
ながら例えば写真撮影用の大光量の要求では、発光時間
が10msにも及ぶ場合がある。このためIGBTの耐
久性等に問題を生じる恐れがあった。
2. Description of the Related Art For example, in a strobe device for photography, it has been considered to use an IGBT (insulated gate bipolar transistor) as a switching element connected in series to an arc tube. By the way, IGB like this
T has a maximum current regulation of 1 ms. However, for example, when a large amount of light is required for photography, the light emission time may reach 10 ms. Therefore, there is a possibility that a problem may occur in the durability of the IGBT.

【0003】[0003]

【発明が解決しようとする課題】解決しようとする問題
点は、ストロボ装置にIGBTを用いる場合には、耐久
性等に問題を生じる恐れがあったというものである。
The problem to be solved is that when an IGBT is used in a strobe device, there is a risk of problems in durability and the like.

【0004】[0004]

【課題を解決するための手段】本発明は、発光管(キセ
ノン放電管6)に直列に設けられるスイッチング素子
(IGBT7)を時分割で駆動する(ドライブ回路9)
ようにしたストロボ装置の駆動回路である。
According to the present invention, a switching element (IGBT 7) provided in series with an arc tube (xenon discharge tube 6) is driven in a time division manner (drive circuit 9).
This is the drive circuit for the strobe device.

【0005】[0005]

【作用】これによれば、時分割で駆動することによって
スイッチング素子等の負担が軽減され、耐久性等の問題
を解消することができる。
According to this, by driving in a time-division manner, the load on the switching element and the like is reduced, and the problems such as durability can be solved.

【0006】[0006]

【実施例】図1において、1は電源供給用のコンバータ
回路である。このコンバータ回路1からの電源がダイオ
ード2を通じてコイル3とダイオード4の並列回路に供
給され、この並列回路を通じて主コンデンサ5に供給さ
れる。
DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, reference numeral 1 is a converter circuit for supplying power. The power from the converter circuit 1 is supplied to the parallel circuit of the coil 3 and the diode 4 through the diode 2, and is supplied to the main capacitor 5 through this parallel circuit.

【0007】またコンバータ回路1からの電源がダイオ
ード2を通じて例えばキセノン放電管6に供給され、こ
のキセノン放電管6に直列にスイッチング素子としてI
GBT(絶縁ゲート型バイポーラトランジスタ)7が設
けられる。さらにこのIGBT7に抵抗器8を介してド
ライブ回路9からの駆動信号が供給される。
Further, the power from the converter circuit 1 is supplied to the xenon discharge tube 6 through the diode 2, and is connected in series with the xenon discharge tube 6 as a switching element.
A GBT (insulated gate bipolar transistor) 7 is provided. Further, a drive signal from the drive circuit 9 is supplied to the IGBT 7 via the resistor 8.

【0008】そしてこの回路において、ドライブ回路9
から例えば図2のAに示すような時分割の駆動信号がI
GBT7に供給される。従ってIGBT7を介して同図
のBに示すような電流がキセノン放電管6に流され、こ
れによってキセノン放電管6が発光される。なお同図の
Cは従来の電流波形を示す。
In this circuit, the drive circuit 9
From a time-divisional drive signal as shown in A of FIG.
It is supplied to the GBT 7. Therefore, a current as shown by B in the figure is passed through the xenon discharge tube 6 through the IGBT 7, and the xenon discharge tube 6 emits light. Note that C in the figure shows a conventional current waveform.

【0009】従ってこの装置において、時分割で駆動さ
れることにより、IGBT7及び主コンデンサ5の負担
が軽減され、これらの耐久性を向上させることができ
る。また時分割にしたことにより、キセノン放電管6に
流される電流が常に増加傾向となり、キセノン放電管6
の発光効率を上げることができる。さらに主コンデンサ
5の容量を規格値の5割程度上で使用することができ
る。
Therefore, in this device, by driving in a time division manner, the load on the IGBT 7 and the main capacitor 5 is reduced, and the durability thereof can be improved. In addition, since the time division is used, the current flowing through the xenon discharge tube 6 always tends to increase, and the xenon discharge tube 6 is always increased.
The luminous efficiency of can be improved. Furthermore, the capacity of the main capacitor 5 can be used at about 50% of the standard value.

【0010】こうして上述の装置によれば、時分割で駆
動することによってスイッチング素子(IGBT7)等
の負担が軽減され、耐久性等の問題を解消することがで
きるものである。
Thus, according to the above-mentioned device, the load on the switching element (IGBT 7) and the like is reduced by driving in time division, and the problems such as durability can be solved.

【0011】なお上述の装置において、電流波形の立上
がりはコイル3、ダイオード4、主コンデンサ5及びキ
セノン放電管6のインピーダンスによって決定される。
また一般に電流ピークは主コンデンサ5の容量によって
決定されるものである。
In the above device, the rise of the current waveform is determined by the impedance of the coil 3, the diode 4, the main capacitor 5 and the xenon discharge tube 6.
The current peak is generally determined by the capacity of the main capacitor 5.

【0012】そして例えば実施される回路では、電流波
形の立上がりは600〜900μs程度である。その場
合に上述の時分割の駆動は、例えば800μsオン及び
700μsオフの繰り返しによって行うことができる。
For example, in the implemented circuit, the rise of the current waveform is about 600 to 900 μs. In this case, the time-divisional driving described above can be performed, for example, by repeating 800 μs ON and 700 μs OFF.

【0013】[0013]

【発明の効果】この発明によれば、時分割で駆動するこ
とによってスイッチング素子等の負担が軽減され、耐久
性等の問題を解消することができるようになった。
According to the present invention, by driving in a time-division manner, the load on the switching element and the like is reduced, and problems such as durability can be solved.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明によるストロボ装置の駆動回路の一例の
構成図である。
FIG. 1 is a configuration diagram of an example of a drive circuit of a strobe device according to the present invention.

【図2】その説明のための波形図である。FIG. 2 is a waveform diagram for the explanation.

【符号の説明】[Explanation of symbols]

1 電源供給用のコンバータ回路 2、4 ダイオード 3 コイル 5 主コンデンサ 6 キセノン放電管 7 IGBT(絶縁ゲート型バイポーラトランジスタ) 8 抵抗器 9 ドライブ回路 1 converter circuit for power supply 2, 4 diode 3 coil 5 main capacitor 6 xenon discharge tube 7 IGBT (insulated gate bipolar transistor) 8 resistor 9 drive circuit

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 発光管に直列に設けられるスイッチング
素子を時分割で駆動するようにしたストロボ装置の駆動
回路。
1. A drive circuit for a strobe device in which a switching element provided in series with an arc tube is driven in a time division manner.
JP34322991A 1991-12-25 1991-12-25 Drive circuit for strobe device Pending JPH05174988A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP34322991A JPH05174988A (en) 1991-12-25 1991-12-25 Drive circuit for strobe device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP34322991A JPH05174988A (en) 1991-12-25 1991-12-25 Drive circuit for strobe device

Publications (1)

Publication Number Publication Date
JPH05174988A true JPH05174988A (en) 1993-07-13

Family

ID=18359917

Family Applications (1)

Application Number Title Priority Date Filing Date
JP34322991A Pending JPH05174988A (en) 1991-12-25 1991-12-25 Drive circuit for strobe device

Country Status (1)

Country Link
JP (1) JPH05174988A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5532555A (en) * 1994-03-07 1996-07-02 Olympus Optical Co., Ltd. Electronic flash apparatus using gate controlled switching device directly driven by CPU

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5532555A (en) * 1994-03-07 1996-07-02 Olympus Optical Co., Ltd. Electronic flash apparatus using gate controlled switching device directly driven by CPU

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