JPS5891736U - Automatic dimming electronic flash device - Google Patents

Automatic dimming electronic flash device

Info

Publication number
JPS5891736U
JPS5891736U JP18694081U JP18694081U JPS5891736U JP S5891736 U JPS5891736 U JP S5891736U JP 18694081 U JP18694081 U JP 18694081U JP 18694081 U JP18694081 U JP 18694081U JP S5891736 U JPS5891736 U JP S5891736U
Authority
JP
Japan
Prior art keywords
voltage
light
light emission
electronic flash
flash device
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
JP18694081U
Other languages
Japanese (ja)
Inventor
丸山　裕仁
克已 堀西
Original Assignee
ウエスト電気株式会社
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 ウエスト電気株式会社 filed Critical ウエスト電気株式会社
Priority to JP18694081U priority Critical patent/JPS5891736U/en
Priority to US06/449,610 priority patent/US4441797A/en
Publication of JPS5891736U publication Critical patent/JPS5891736U/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

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

図は本考案の自動調光電子閃光装置の一実施例である電
気回路図を示す。 ４・・・・・・主放電コンデンサ、７・・・・・・閃光
管、訃・・・・・発光制御回路、１０・・・・・・受光
素子、１１・・・積分コンデンサ、１３・・・・・・比
較器、１４．　１５．　１６゜−１７・・・・・１ラン
ジスタ、１８．　１９．　２０．　２１゜２２・・・・
・・抵抗、２３．　２４．　２５．　２６・・・・・・
端子。The figure shows an electrical circuit diagram of an embodiment of the automatic dimming electronic flash device of the present invention. 4... Main discharge capacitor, 7... Flash tube, Light emission control circuit, 10... Light receiving element, 11... Integrating capacitor, 13... ...Comparator, 14. 15. 16°-17...1 transistor, 18. 19. 20. 21゜22...
...Resistance, 23. 24. 25. 26...
terminal.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 主放電コンデンサの充電エネルギーを消費して発光する
閃光放電管と、被写体光を受光する受光素子と積分コン
デンサとから成る受光回路と、前記積分コンデンサの積
分電圧が断定値に達したときに前記閃光放電管の発光を
停止せしめる発光制御回路とを有してなる自動調光電子
閃光装置において、複数個のスイッチ素子と、該スイッ
チ素子にそれぞれ接続され、前記装置の調光Ｆ値を調整
する信号が印加され、前記スイッチ素子を適宜にオンさ
せる複数個の入力端子と、前記スイッチ素子のそれぞれ
に接続されミ前記いずれかのスイッチ素子がオンしたと
きに相異なる電圧を発生する複数個の基準電圧発生回路
と、前記積分コンデンサの電圧と前記電圧発生回路によ
る基準電圧とが入力され、前記積分コンデンサの電圧値
が前記基準電圧以上になったときに反転し、前記発光制
御回路に発光停止信号を与える比較器とを備えてなる自
動調光電子閃光装置。A light receiving circuit includes a flash discharge tube that emits light by consuming charging energy of a main discharge capacitor, a light receiving element that receives subject light, and an integrating capacitor; An automatic dimming electronic flash device comprising a light emission control circuit for stopping light emission of a discharge tube, comprising a plurality of switch elements and a signal connected to each of the switch elements for adjusting a light control F value of the device. a plurality of input terminals to which a voltage is applied to turn on the switching elements as appropriate; and a plurality of reference voltages connected to each of the switching elements and generating different voltages when any one of the switching elements is turned on. A generating circuit receives the voltage of the integrating capacitor and the reference voltage generated by the voltage generating circuit, and inverts when the voltage value of the integrating capacitor exceeds the reference voltage, and sends a light emission stop signal to the light emission control circuit. An automatic dimming electronic flash device comprising a comparator that provides
JP18694081U 1981-12-14 1981-12-14 Automatic dimming electronic flash device Pending JPS5891736U (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP18694081U JPS5891736U (en) 1981-12-14 1981-12-14 Automatic dimming electronic flash device
US06/449,610 US4441797A (en) 1981-12-14 1982-12-14 Electronic flash device capable of automatically controlling the quantity of a flash of light

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18694081U JPS5891736U (en) 1981-12-14 1981-12-14 Automatic dimming electronic flash device

Publications (1)

Publication Number Publication Date
JPS5891736U true JPS5891736U (en) 1983-06-21

Family

ID=29989327

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18694081U Pending JPS5891736U (en) 1981-12-14 1981-12-14 Automatic dimming electronic flash device

Country Status (1)

Country Link
JP (1) JPS5891736U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11969136B2 (en) 2018-04-30 2024-04-30 Lg Electronics Inc. Vacuum cleaner and control method therefor

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5275430A (en) * 1975-12-19 1977-06-24 West Electric Co Electronic flash unit
JPS56104324A (en) * 1980-01-25 1981-08-20 Sanpack:Kk Flash emitting device with computer

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5275430A (en) * 1975-12-19 1977-06-24 West Electric Co Electronic flash unit
JPS56104324A (en) * 1980-01-25 1981-08-20 Sanpack:Kk Flash emitting device with computer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11969136B2 (en) 2018-04-30 2024-04-30 Lg Electronics Inc. Vacuum cleaner and control method therefor

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