GB1275658A - Electronic flash unit with a device for regulating the duration of the flash - Google Patents

Electronic flash unit with a device for regulating the duration of the flash

Info

Publication number
GB1275658A
GB1275658A GB59774/69A GB5977469A GB1275658A GB 1275658 A GB1275658 A GB 1275658A GB 59774/69 A GB59774/69 A GB 59774/69A GB 5977469 A GB5977469 A GB 5977469A GB 1275658 A GB1275658 A GB 1275658A
Authority
GB
United Kingdom
Prior art keywords
flash
capacitor
tube
dec
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.)
Expired
Application number
GB59774/69A
Other languages
English (en)
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.)
Loewe Opta GmbH
Original Assignee
Loewe Opta GmbH
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 Loewe Opta GmbH filed Critical Loewe Opta GmbH
Publication of GB1275658A publication Critical patent/GB1275658A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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

Landscapes

  • Stroboscope Apparatuses (AREA)
  • Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
GB59774/69A 1968-12-11 1969-12-08 Electronic flash unit with a device for regulating the duration of the flash Expired GB1275658A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681814856 DE1814856A1 (de) 1968-12-11 1968-12-11 Elektronenblitzgeraet mit einer Vorrichtung zur Regelung der Blitzdauer

Publications (1)

Publication Number Publication Date
GB1275658A true GB1275658A (en) 1972-05-24

Family

ID=5716325

Family Applications (1)

Application Number Title Priority Date Filing Date
GB59774/69A Expired GB1275658A (en) 1968-12-11 1969-12-08 Electronic flash unit with a device for regulating the duration of the flash

Country Status (5)

Country Link
US (1) US3703662A (https=)
DE (1) DE1814856A1 (https=)
FR (1) FR2025884A1 (https=)
GB (1) GB1275658A (https=)
NL (1) NL6918599A (https=)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH522894A (de) * 1970-05-05 1972-05-15 Multiblitz Mannesmann Gmbh Co Elektronenblitzgerät
US3774072A (en) * 1971-01-22 1973-11-20 Honeywell Inc Remotely powered quench control sensing transmitter

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3033988A (en) * 1957-04-05 1962-05-08 Edgerton Germeshausen & Grier Method of and apparatus for the control of electric impulses
US3568582A (en) * 1967-09-27 1971-03-09 Konishiroku Photo Ind Electronic shutter
US3509422A (en) * 1967-10-31 1970-04-28 Research Corp Automatic photographic fill-in flash circuit
US3519879A (en) * 1968-07-25 1970-07-07 Honeywell Inc Flash apparatus with automatic light termination having gating and anticipation means

Also Published As

Publication number Publication date
FR2025884A1 (https=) 1970-09-11
NL6918599A (https=) 1970-06-15
DE1814856A1 (de) 1970-07-16
US3703662A (en) 1972-11-21

Similar Documents

Publication Publication Date Title
US3340426A (en) Control system for terminating the discharge through a flash lamp
GB1225917A (https=)
GB1225918A (https=)
US3809951A (en) Electronic photoflash
FR1508374A (fr) Dispositif de commande électrique d'un circuit hydraulique
GB1275658A (en) Electronic flash unit with a device for regulating the duration of the flash
GB1220562A (en) Discharge flashlight
GB1297100A (https=)
GB1337361A (en) Photoflash system
US3869642A (en) Control circuit for electronic flash apparatus
GB1217526A (en) Photographic camera having exposure time control and indicating means
GB1328980A (en) Photographing apparatus
GB1374245A (en) Electronic photoflash
GB1452814A (en) Cameras
GB1381995A (en) Discharge-type flash apparatus
GB1185579A (en) Improvements in or relating to Electronic Flash Apparatus for Photographic Purposes
GB1246655A (en) Automatic flash apparatus for use with a camera
GB1307244A (en) Arrangement provided with a discharge flash tube
GB1422094A (en) Electronic flash apparatus
ZA713219B (en) An electronic device for controlling a silicon controlled rectifier in a capacitor discharge electronic ignition circuit
GB1320455A (en) Apparatus for regulating the light energy decay characteristic of a pulsed flash device
GB1320644A (en) Electronic flash device for photography
GB1281386A (en) Circuit for the photo electric ignition of an electronic flash tube
GB1340478A (en) Flash device and photographing system for a camera
GB1376880A (en) Electronic flash apparatus

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee