DE3020133C2 - Elektronisches Blitzlichtgerät - Google Patents

Elektronisches Blitzlichtgerät

Info

Publication number
DE3020133C2
DE3020133C2 DE3020133A DE3020133A DE3020133C2 DE 3020133 C2 DE3020133 C2 DE 3020133C2 DE 3020133 A DE3020133 A DE 3020133A DE 3020133 A DE3020133 A DE 3020133A DE 3020133 C2 DE3020133 C2 DE 3020133C2
Authority
DE
Germany
Prior art keywords
capacitor
transistor
voltage
switch
main
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.)
Expired
Application number
DE3020133A
Other languages
German (de)
English (en)
Other versions
DE3020133A1 (de
Inventor
Hiroshi Nara Iwata
Original Assignee
West Electric Co., Ltd., Osaka
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., Osaka filed Critical West Electric Co., Ltd., Osaka
Publication of DE3020133A1 publication Critical patent/DE3020133A1/de
Application granted granted Critical
Publication of DE3020133C2 publication Critical patent/DE3020133C2/de
Expired 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
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/30—Circuit arrangements in which the lamp is fed by pulses, e.g. flash lamp
    • H05B41/32—Circuit arrangements in which the lamp is fed by pulses, e.g. flash lamp for single flash operation
    • H05B41/325—Circuit arrangements in which the lamp is fed by pulses, e.g. flash lamp for single flash operation by measuring the incident light
    • 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)
  • Stroboscope Apparatuses (AREA)
  • Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
  • Dc-Dc Converters (AREA)
DE3020133A 1979-05-29 1980-05-27 Elektronisches Blitzlichtgerät Expired DE3020133C2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6648279A JPS55157732A (en) 1979-05-29 1979-05-29 Electronic flash device

Publications (2)

Publication Number Publication Date
DE3020133A1 DE3020133A1 (de) 1980-12-04
DE3020133C2 true DE3020133C2 (de) 1987-03-19

Family

ID=13317039

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3020133A Expired DE3020133C2 (de) 1979-05-29 1980-05-27 Elektronisches Blitzlichtgerät

Country Status (3)

Country Link
US (1) US4310785A (US08063081-20111122-C00044.png)
JP (1) JPS55157732A (US08063081-20111122-C00044.png)
DE (1) DE3020133C2 (US08063081-20111122-C00044.png)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4864340A (en) * 1986-12-15 1989-09-05 Canon Kabushiki Kaisha Remote control device having an energy source charged by a camera
US6009281A (en) * 1987-07-10 1999-12-28 Minolta Co., Ltd. Flash device
JPS6417033A (en) * 1987-07-10 1989-01-20 Minolta Camera Kk Automatic dimming system flash device
JPH01123843U (US08063081-20111122-C00044.png) * 1988-02-13 1989-08-23
US5347200A (en) * 1993-02-26 1994-09-13 Multi Electric Mfg. Inc. Strobe light switching arrangement with reduced transient currents
FR2749988A1 (fr) * 1996-06-14 1997-12-19 Philips Electronics Nv Dispositif d'accumulateurs pour un appareil electrique et/ou electronique et terminal de telecommunication comportant un tel dispositif
ES2317890T3 (es) * 2000-03-31 2009-05-01 Inventio Ag Dispositivo y procedimiento para reducir la potencia de la conexion a la red de instalaciones de ascensor.
US9441799B2 (en) * 2014-02-18 2016-09-13 Andrew J. Miller Electronic circuits to extend battery life time
WO2020033597A1 (en) * 2018-08-07 2020-02-13 Battery Savers Inc. Method and system to boost battery voltage

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2877385A (en) * 1957-08-21 1959-03-10 Honeywell Regulator Co Electric system
GB1452284A (en) * 1972-10-13 1976-10-13 West Electric Co Photographic flash apparatus
US4256994A (en) * 1978-10-07 1981-03-17 Canon Kabushiki Kaisha Actuating circuit for light measuring circuit in electronic flash device

Also Published As

Publication number Publication date
US4310785A (en) 1982-01-12
JPS55157732A (en) 1980-12-08
JPH02686B2 (US08063081-20111122-C00044.png) 1990-01-09
DE3020133A1 (de) 1980-12-04

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Legal Events

Date Code Title Description
OAP Request for examination filed
OD Request for examination
8125 Change of the main classification
8126 Change of the secondary classification
8128 New person/name/address of the agent

Representative=s name: JUNG, E., DIPL.-CHEM. DR.PHIL. SCHIRDEWAHN, J., DI

D2 Grant after examination
8364 No opposition during term of opposition
8320 Willingness to grant licences declared (paragraph 23)