CH522894A - Electronic flash unit - Google Patents

Electronic flash unit

Info

Publication number: CH522894A
Authority: CH; Switzerland
Prior art keywords: flash unit; electronic flash; electronic; unit; flash
Prior art date: 1970-05-05

Application number

CH601371A

Other languages

German (de)

Inventor

Ludloff Wolfgang

Original Assignee

Multiblitz Mannesmann Gmbh Co

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.)

1970-05-05

Filing date

1971-04-21

Publication date

1972-05-15

1970-05-05 Priority claimed from DE19702021880 external-priority patent/DE2021880A1/en

1970-08-05 Priority claimed from DE19702038859 external-priority patent/DE2038859A1/en

1971-04-21 Application filed by Multiblitz Mannesmann Gmbh Co filed Critical Multiblitz Mannesmann Gmbh Co

1972-05-15 Publication of CH522894A publication Critical patent/CH522894A/en

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

CH601371A 1970-05-05 1971-04-21 Electronic flash unit CH522894A (en)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE19702021880 DE2021880A1 (en)	1970-05-05	1970-05-05	Electronic flash unit
DE19702038859 DE2038859A1 (en)	1970-08-05	1970-08-05	Electronic flash unit

Publications (1)

Publication Number	Publication Date
CH522894A true CH522894A (en)	1972-05-15

Family

ID=25759082

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CH601371A CH522894A (en)	1970-05-05	1971-04-21	Electronic flash unit

Country Status (8)

Country	Link
US (1)	US3808500A (en)
AT (1)	AT316307B (en)
CA (1)	CA921549A (en)
CH (1)	CH522894A (en)
ES (1)	ES390865A1 (en)
FR (1)	FR2093492A5 (en)
GB (1)	GB1331328A (en)
NL (1)	NL7106106A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE2305782A1 (en) *	1973-02-07	1974-08-08	Rollei Werke Franke Heidecke	ELECTRONIC FLASH UNIT FOR PHOTOGRAPHIC PURPOSES
US3976914A (en) *	1975-05-27	1976-08-24	Honeywell Inc.	Series SCR gate hold-on circuit
JPS5421070A (en) *	1977-07-18	1979-02-16	West Electric Co	Electronic flashing device

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3229158A (en) *	1962-02-21	1966-01-11	Honeywell Inc	Electronic photographic flash apparatus with photosensitive capacitor charge monitoring
US3344311A (en) *	1965-05-24	1967-09-26	Gen Electric	Compensating control circuit
US3344310A (en) *	1966-01-13	1967-09-26	Gen Electric	Universal lamp control circuit with high voltage producing means
US3591829A (en) *	1967-04-20	1971-07-06	Minolta Camera Kk	Automatic control device for electronic flash
US3510750A (en) *	1967-11-28	1970-05-05	Masao Horino	Rectified output voltage control device
DE1814856A1 (en) *	1968-12-11	1970-07-16	Loewe Opta Gmbh	Electronic flash unit with a device for regulating the duration of the flash
DE1905223A1 (en) *	1969-01-28	1970-08-13	Loewe Opta Gmbh	Electronic flash unit with flash duration control device

1971
- 1971-04-21 CH CH601371A patent/CH522894A/en not_active IP Right Cessation
- 1971-04-22 GB GB1083071*[A patent/GB1331328A/en not_active Expired
- 1971-04-23 AT AT354271A patent/AT316307B/en not_active IP Right Cessation
- 1971-04-26 US US00137411A patent/US3808500A/en not_active Expired - Lifetime
- 1971-05-04 ES ES390865A patent/ES390865A1/en not_active Expired
- 1971-05-04 FR FR7117243A patent/FR2093492A5/fr not_active Expired
- 1971-05-04 CA CA112113A patent/CA921549A/en not_active Expired
- 1971-05-04 NL NL7106106A patent/NL7106106A/xx unknown

Also Published As

Publication number	Publication date
CA921549A (en)	1973-02-20
GB1331328A (en)	1973-09-26
ES390865A1 (en)	1973-07-01
AT316307B (en)	1974-07-10
FR2093492A5 (en)	1972-01-28
US3808500A (en)	1974-04-30
NL7106106A (en)	1971-11-09

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Legal Events

Date	Code	Title	Description
1974-11-29	PL	Patent ceased