JPH045100U - - Google Patents
Info
- Publication number
- JPH045100U JPH045100U JP4395390U JP4395390U JPH045100U JP H045100 U JPH045100 U JP H045100U JP 4395390 U JP4395390 U JP 4395390U JP 4395390 U JP4395390 U JP 4395390U JP H045100 U JPH045100 U JP H045100U
- Authority
- JP
- Japan
- Prior art keywords
- light emission
- insulated gate
- arc tube
- circuit
- bipolar transistor
- 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
Links
- 239000003990 capacitor Substances 0.000 claims description 4
- 238000003745 diagnosis Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Stroboscope Apparatuses (AREA)
- Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
Description
第１図は本考案の第１の実施例を示す回路図、
第２図は第１図の回路の各部の電位の経時変化を
示すタイムチヤート、第３図は第２の実施例を示
す回路図、第４図は第３の実施例を示す回路図で
ある。
１……電源スイツチ、２……電源、３……昇圧
回路、４……メインコンデンサ、５，２４，３０
……ダイオード、６……インダクタ、８……抵抗
器、９……トリガコンデンサ、１０……トリガト
ランス、１１……サイリスタ、２３……絶縁ゲー
ト型バイポーラトランジスタ、２８……カメライ
ンターフエース、２９……カメラ、３１……トリ
ガ回路、３２……制御回路。
FIG. 1 is a circuit diagram showing a first embodiment of the present invention;
FIG. 2 is a time chart showing changes over time in the potential of each part of the circuit in FIG. 1, FIG. 3 is a circuit diagram showing the second embodiment, and FIG. 4 is a circuit diagram showing the third embodiment. . 1... Power switch, 2... Power supply, 3... Boost circuit, 4... Main capacitor, 5, 24, 30
... Diode, 6 ... Inductor, 8 ... Resistor, 9 ... Trigger capacitor, 10 ... Trigger transformer, 11 ... Thyristor, 23 ... Insulated gate bipolar transistor, 28 ... Camera interface, 29 ... ...Camera, 31...Trigger circuit, 32...Control circuit.
Claims (1)
ン・オフする絶縁ゲート型バイポーラトランジス
タと、 発光開始指令と発光停止指令とに応じて前記絶
縁ゲート型バイポーラトランジスタをオン、オフ
する制御回路とを備える電子閃光装置において、 前記絶縁ゲート型バイポーラトランジスタの故
障を検出する故障診断回路と、 この故障診断回路が故障を検出するときには、
前記発光開始指令が出力されても前記発光管の発
光を禁止する発光禁止回路とを具備することを特
徴とする電子閃光装置。[Claims for Utility Model Registration] A main power source, a capacitor that stores luminous energy, an arc tube connected in parallel to this capacitor, and an insulated gate that is connected in series with this arc tube and turns on and off the arc tube. A fault diagnosis for detecting a failure of the insulated gate bipolar transistor in an electronic flash device comprising an insulated gate bipolar transistor and a control circuit that turns on and off the insulated gate bipolar transistor in response to a light emission start command and a light emission stop command. circuit and when this fault diagnosis circuit detects a fault,
An electronic flash device comprising: a light emission prohibition circuit that prohibits light emission of the arc tube even if the light emission start command is output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4395390U JPH045100U (en) | 1990-04-24 | 1990-04-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4395390U JPH045100U (en) | 1990-04-24 | 1990-04-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH045100U true JPH045100U (en) | 1992-01-17 |
Family
ID=31556814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4395390U Pending JPH045100U (en) | 1990-04-24 | 1990-04-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH045100U (en) |
-
1990
- 1990-04-24 JP JP4395390U patent/JPH045100U/ja active Pending
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