CH492999A - Circuit arrangement for the photoelectric ignition of an electronic flash - Google Patents
Circuit arrangement for the photoelectric ignition of an electronic flashInfo
- Publication number
- CH492999A CH492999A CH1664869A CH1664869A CH492999A CH 492999 A CH492999 A CH 492999A CH 1664869 A CH1664869 A CH 1664869A CH 1664869 A CH1664869 A CH 1664869A CH 492999 A CH492999 A CH 492999A
- Authority
- CH
- Switzerland
- Prior art keywords
- photoelectric
- ignition
- circuit arrangement
- electronic flash
- flash
- Prior art date
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
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19681813024 DE1813024A1 (en) | 1968-12-06 | 1968-12-06 | Circuit arrangement for the photoelectric ignition of an electronic flash |
Publications (1)
Publication Number | Publication Date |
---|---|
CH492999A true CH492999A (en) | 1970-06-30 |
Family
ID=5715412
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH1664869A CH492999A (en) | 1968-12-06 | 1969-11-06 | Circuit arrangement for the photoelectric ignition of an electronic flash |
Country Status (5)
Country | Link |
---|---|
CH (1) | CH492999A (en) |
DE (1) | DE1813024A1 (en) |
FR (1) | FR2025501A1 (en) |
GB (1) | GB1281386A (en) |
NL (1) | NL6918186A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2222035A (en) * | 1988-07-22 | 1990-02-21 | James Richard Hennequin | Flash photography inhibiting apparatus |
-
1968
- 1968-12-06 DE DE19681813024 patent/DE1813024A1/en active Pending
-
1969
- 1969-11-06 CH CH1664869A patent/CH492999A/en not_active IP Right Cessation
- 1969-11-21 GB GB5701869A patent/GB1281386A/en not_active Expired
- 1969-12-01 FR FR6941614A patent/FR2025501A1/fr not_active Withdrawn
- 1969-12-03 NL NL6918186A patent/NL6918186A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
DE1813024A1 (en) | 1970-07-02 |
FR2025501A1 (en) | 1970-09-11 |
GB1281386A (en) | 1972-07-12 |
NL6918186A (en) | 1970-06-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PL | Patent ceased |