JPS55134824A - Automatic dimming strobe device - Google Patents

Automatic dimming strobe device

Info

Publication number
JPS55134824A
JPS55134824A JP4324179A JP4324179A JPS55134824A JP S55134824 A JPS55134824 A JP S55134824A JP 4324179 A JP4324179 A JP 4324179A JP 4324179 A JP4324179 A JP 4324179A JP S55134824 A JPS55134824 A JP S55134824A
Authority
JP
Japan
Prior art keywords
transistor
automatic dimming
charging voltage
capacitor
circuit
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
Application number
JP4324179A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0158494B2 (US07922777-20110412-C00004.png
Inventor
Shinji Hirata
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.)
West Electric Co Ltd
Original Assignee
West Electric Co Ltd
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 West Electric Co Ltd filed Critical West Electric Co Ltd
Priority to JP4324179A priority Critical patent/JPS55134824A/ja
Priority to GB8011138A priority patent/GB2047416B/en
Priority to US06/136,882 priority patent/US4301392A/en
Publication of JPS55134824A publication Critical patent/JPS55134824A/ja
Publication of JPH0158494B2 publication Critical patent/JPH0158494B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B15/00—Special procedures for taking photographs; Apparatus therefor
    • G03B15/02—Illuminating scene
    • G03B15/03—Combinations of cameras with lighting apparatus; Flash units
    • G03B15/05—Combinations of cameras with electronic flash apparatus; Electronic flash units
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B2215/00—Special procedures for taking photographs; Apparatus therefor
    • G03B2215/05—Combinations of cameras with electronic flash units

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
  • Stroboscope Apparatuses (AREA)
JP4324179A 1979-04-09 1979-04-09 Automatic dimming strobe device Granted JPS55134824A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP4324179A JPS55134824A (en) 1979-04-09 1979-04-09 Automatic dimming strobe device
GB8011138A GB2047416B (en) 1979-04-09 1980-04-02 Electronic flash
US06/136,882 US4301392A (en) 1979-04-09 1980-04-03 Electronic flash system capable of automatic flash duration control

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4324179A JPS55134824A (en) 1979-04-09 1979-04-09 Automatic dimming strobe device

Publications (2)

Publication Number Publication Date
JPS55134824A true JPS55134824A (en) 1980-10-21
JPH0158494B2 JPH0158494B2 (US07922777-20110412-C00004.png) 1989-12-12

Family

ID=12658396

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4324179A Granted JPS55134824A (en) 1979-04-09 1979-04-09 Automatic dimming strobe device

Country Status (3)

Country Link
US (1) US4301392A (US07922777-20110412-C00004.png)
JP (1) JPS55134824A (US07922777-20110412-C00004.png)
GB (1) GB2047416B (US07922777-20110412-C00004.png)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57150825U (US07922777-20110412-C00004.png) * 1981-03-16 1982-09-21

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5714831A (en) * 1980-07-01 1982-01-26 West Electric Co Ltd Electronic flash device
JPS5979233A (ja) * 1982-10-28 1984-05-08 Canon Inc 閃光装置
US5982112A (en) * 1992-06-04 1999-11-09 David A. Pringle Low pressure xenon lamp and driver circuitry for use in theatrical productions and the like
US6078145A (en) * 1996-12-10 2000-06-20 Weldon Technologies, Inc. Synchronous two wire multiple strobe autotrigger control circuit

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS522619B2 (US07922777-20110412-C00004.png) * 1972-05-30 1977-01-22
JPS51117624A (en) * 1975-04-08 1976-10-15 Canon Inc Flashlight unit warning circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57150825U (US07922777-20110412-C00004.png) * 1981-03-16 1982-09-21
JPH0228509Y2 (US07922777-20110412-C00004.png) * 1981-03-16 1990-07-31

Also Published As

Publication number Publication date
GB2047416A (en) 1980-11-26
GB2047416B (en) 1983-03-09
JPH0158494B2 (US07922777-20110412-C00004.png) 1989-12-12
US4301392A (en) 1981-11-17

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