CA1011390A - Photographic electronic flash apparatus - Google Patents
Photographic electronic flash apparatusInfo
- Publication number
- CA1011390A CA1011390A CA189,161A CA189161A CA1011390A CA 1011390 A CA1011390 A CA 1011390A CA 189161 A CA189161 A CA 189161A CA 1011390 A CA1011390 A CA 1011390A
- Authority
- CA
- Canada
- Prior art keywords
- electronic flash
- flash apparatus
- photographic electronic
- photographic
- flash
- 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
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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/338—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only in a self-oscillating arrangement
- H02M3/3381—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only in a self-oscillating arrangement using a single commutation path
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Stroboscope Apparatuses (AREA)
- Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP733450A JPS525847B2 (ja) | 1972-12-28 | 1972-12-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
CA1011390A true CA1011390A (en) | 1977-05-31 |
Family
ID=11557659
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA189,161A Expired CA1011390A (en) | 1972-12-28 | 1973-12-28 | Photographic electronic flash apparatus |
Country Status (5)
Country | Link |
---|---|
US (1) | US3890538A (ja) |
JP (1) | JPS525847B2 (ja) |
CA (1) | CA1011390A (ja) |
DE (1) | DE2364708B2 (ja) |
GB (1) | GB1408710A (ja) |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS526282Y2 (ja) * | 1973-03-13 | 1977-02-09 | ||
JPS5619074Y2 (ja) * | 1976-03-26 | 1981-05-07 | ||
DE2716824C2 (de) * | 1976-04-16 | 1982-11-18 | Fuji Photo Optical Co., Ltd., Omiya, Saitama | Elektronisches Blitzlichtgerät |
JPS52127231A (en) * | 1976-04-16 | 1977-10-25 | Fuji Photo Optical Co Ltd | Oscillation circuit for flash discharge tube |
JPS5336336U (ja) * | 1976-09-03 | 1978-03-30 | ||
JPS5343521A (en) * | 1976-09-30 | 1978-04-19 | West Electric Co | Photographic flash unit |
JPS53116734U (ja) * | 1976-10-26 | 1978-09-16 | ||
JPS5747785Y2 (ja) * | 1977-01-11 | 1982-10-20 | ||
JPS53100936U (ja) * | 1977-01-19 | 1978-08-15 | ||
JPS5826007B2 (ja) * | 1977-01-19 | 1983-05-31 | ウエスト電気株式会社 | 電子閃光装置 |
JPS53110138U (ja) * | 1977-02-09 | 1978-09-02 | ||
JPS54100614U (ja) * | 1977-12-26 | 1979-07-16 | ||
JPS5563525U (ja) * | 1978-10-23 | 1980-04-30 | ||
US4204140A (en) * | 1979-02-12 | 1980-05-20 | Eastman Kodak Company | Safety circuit for electronic flash apparatus |
JPS55141970A (en) * | 1979-04-21 | 1980-11-06 | Yoshiyuki Takematsu | Power supply device |
JPS564132A (en) * | 1979-06-22 | 1981-01-17 | Yoshiyuki Takematsu | Flash device |
US4306281A (en) * | 1979-10-08 | 1981-12-15 | Canon Kabushiki Kaisha | DC-DC Converter for electronic flash unit |
JPS5658634U (ja) * | 1980-10-14 | 1981-05-20 | ||
US4566769A (en) * | 1982-12-29 | 1986-01-28 | Olympus Optical Co., Ltd. | Power supply unit for electronic flash |
JPS58214134A (ja) * | 1983-05-10 | 1983-12-13 | Asahi Optical Co Ltd | フラツシユ装置 |
US4755725A (en) * | 1985-12-12 | 1988-07-05 | Varo, Inc. | High intensity light shut-down circuit for night vision goggle |
US4672194A (en) * | 1985-12-12 | 1987-06-09 | Varo, Inc. | Passive proximity battery control circuit for night vision goggles |
US4703879A (en) * | 1985-12-12 | 1987-11-03 | Varo, Inc. | Night vision goggle headgear |
US4816854A (en) * | 1986-08-13 | 1989-03-28 | Minolta Camera Kabushiki Kaisha | Close-range lighting flash device |
DE3627862A1 (de) * | 1986-08-16 | 1988-02-25 | Honeywell Regelsysteme Gmbh | Schaltungsanordnung zur erzeugung einer spannung |
GB2237119B (en) * | 1989-10-06 | 1994-06-08 | Asahi Optical Co Ltd | Strobe control apparatus of camera |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3060796A (en) * | 1958-04-24 | 1962-10-30 | Honeywell Regulator Co | Photographic copying apparatus |
US2969721A (en) * | 1958-06-23 | 1961-01-31 | Polaroid Corp | Photoflash unit |
US3555394A (en) * | 1968-08-02 | 1971-01-12 | Graflex Inc | Power pack for photographic flashlamp |
US3541393A (en) * | 1969-05-29 | 1970-11-17 | Hercules Inc | High energy solid state blasting machine |
-
1972
- 1972-12-28 JP JP733450A patent/JPS525847B2/ja not_active Expired
-
1973
- 1973-12-26 US US427729A patent/US3890538A/en not_active Expired - Lifetime
- 1973-12-27 DE DE19732364708 patent/DE2364708B2/de not_active Ceased
- 1973-12-28 GB GB5992973A patent/GB1408710A/en not_active Expired
- 1973-12-28 CA CA189,161A patent/CA1011390A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE2364708B2 (de) | 1976-10-28 |
DE2364708A1 (de) | 1974-07-11 |
GB1408710A (en) | 1975-10-01 |
US3890538A (en) | 1975-06-17 |
JPS525847B2 (ja) | 1977-02-17 |
JPS4990925A (ja) | 1974-08-30 |
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