JPH03116599U - - Google Patents
Info
- Publication number
- JPH03116599U JPH03116599U JP2262790U JP2262790U JPH03116599U JP H03116599 U JPH03116599 U JP H03116599U JP 2262790 U JP2262790 U JP 2262790U JP 2262790 U JP2262790 U JP 2262790U JP H03116599 U JPH03116599 U JP H03116599U
- Authority
- JP
- Japan
- Prior art keywords
- main capacitor
- flash lamp
- detection circuit
- detects
- overcharge detection
- 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.)
- Granted
Links
Landscapes
- Fixing For Electrophotography (AREA)
- Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
Description
第1図は本考案の一実施例の構成を示す回路図
、第2図は本考案の一実施例の動作を示すフロー
チヤートである。
6……メインコンデンサ、7……フラツシユラ
ンプ、9……制御回路、11……過充電検出回路
、12……比較器、13……タイマ、14……検
出器、15……トリガ回路、16……放電用接点
、17……放電用リレー。
FIG. 1 is a circuit diagram showing the configuration of an embodiment of the present invention, and FIG. 2 is a flowchart showing the operation of the embodiment of the present invention. 6... Main capacitor, 7... Flash lamp, 9... Control circuit, 11... Overcharge detection circuit, 12... Comparator, 13... Timer, 14... Detector, 15... Trigger circuit, 16...discharge contact, 17...discharge relay.
Claims (1)
プを発光させる電荷が充電されるメインコンデン
サと、このメインコンデンサに並列に接続される
放電用接点と、前記メインコンデンサに所定値以
上の電圧が所定時間以上充電されたことを検出す
る過充電検出回路と、前記メインコンデンサへの
充電を制御すると共に、前記過充電検出回路が前
記メインコンデンサの過充電を検出したとき、前
記フラツシユランプの発光と前記放電用接点の短
絡のいずれかを選択して前記メインコンデンサの
電荷の放電を行う制御回路とを有することを特徴
とするフラツシユ電源の保護装置。 (2) フラツシユランプと、このフラツシユラン
プを発光させる電荷が充電されるメインコンデン
サと、このメインコンデンサに並列に接続される
放電用接点と、前記メインコンデンサに所定値以
上の電圧が所定時間以上充電されたことを検出す
る過充電検出回路と、前記フラツシユランプが発
光したか否かを検出する発光検出器と、前記メイ
ンコンデンサへの充電を制御すると共に、前記過
充電検出回路が前記メインコンデンサの過充電を
検出したとき、まず前記フラツシユランプを発光
させる動作を行つて前記検出器にて発光の有無を
検出し、発光しなかつたとき、前記放電用接点を
短絡して前記メインコンデンサの電荷の放電を行
う制御回路とを有することを特徴とするフラツシ
ユ電源の保護装置。[Claims for Utility Model Registration] (1) A flash lamp, a main capacitor charged with electric charge that causes the flash lamp to emit light, a discharge contact connected in parallel to the main capacitor, and a discharge contact connected to the main capacitor in parallel. an overcharge detection circuit that detects that a voltage equal to or higher than a predetermined value has been charged for a predetermined period of time; and an overcharge detection circuit that controls charging of the main capacitor, and when the overcharge detection circuit detects overcharging of the main capacitor; A protection device for a flash power supply, comprising: a control circuit that selects either light emission of the flash lamp or short-circuiting of the discharge contact to discharge the charge of the main capacitor. (2) A flash lamp, a main capacitor charged with the charge that causes the flash lamp to emit light, a discharge contact connected in parallel to the main capacitor, and a voltage of a predetermined value or higher applied to the main capacitor for a predetermined period of time. an overcharge detection circuit that detects that the flash lamp has been charged; a light emission detector that detects whether the flash lamp has emitted light; and an overcharge detection circuit that controls charging of the main capacitor. When overcharging of the main capacitor is detected, the flash lamp is first activated to emit light, and the detector detects the presence or absence of light emission. When no light is emitted, the discharge contact is short-circuited and the main capacitor is A protection device for a flash power supply, comprising a control circuit for discharging the charge of a capacitor.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2262790U JP2525607Y2 (en) | 1990-03-08 | 1990-03-08 | Flash power protection device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2262790U JP2525607Y2 (en) | 1990-03-08 | 1990-03-08 | Flash power protection device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH03116599U true JPH03116599U (en) | 1991-12-03 |
JP2525607Y2 JP2525607Y2 (en) | 1997-02-12 |
Family
ID=31525634
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2262790U Expired - Lifetime JP2525607Y2 (en) | 1990-03-08 | 1990-03-08 | Flash power protection device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2525607Y2 (en) |
-
1990
- 1990-03-08 JP JP2262790U patent/JP2525607Y2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JP2525607Y2 (en) | 1997-02-12 |
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