JPH0158494B2 - - Google Patents
Info
- Publication number
- JPH0158494B2 JPH0158494B2 JP54043241A JP4324179A JPH0158494B2 JP H0158494 B2 JPH0158494 B2 JP H0158494B2 JP 54043241 A JP54043241 A JP 54043241A JP 4324179 A JP4324179 A JP 4324179A JP H0158494 B2 JPH0158494 B2 JP H0158494B2
- Authority
- JP
- Japan
- Prior art keywords
- switching element
- capacitor
- circuit
- light
- 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
Links
- 239000003990 capacitor Substances 0.000 claims description 53
- 230000010355 oscillation Effects 0.000 claims description 22
- 238000001514 detection method Methods 0.000 claims description 10
- 238000007599 discharging Methods 0.000 description 6
- 238000012790 confirmation Methods 0.000 description 5
- 229910052754 neon Inorganic materials 0.000 description 5
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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
-
- 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)
- Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
- Stroboscope Apparatuses (AREA)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4324179A JPS55134824A (en) | 1979-04-09 | 1979-04-09 | Automatic dimming strobe device |
GB8011138A GB2047416B (en) | 1979-04-09 | 1980-04-02 | Electronic flash |
US06/136,882 US4301392A (en) | 1979-04-09 | 1980-04-03 | Electronic flash system capable of automatic flash duration control |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4324179A JPS55134824A (en) | 1979-04-09 | 1979-04-09 | Automatic dimming strobe device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55134824A JPS55134824A (en) | 1980-10-21 |
JPH0158494B2 true JPH0158494B2 (US07922777-20110412-C00004.png) | 1989-12-12 |
Family
ID=12658396
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4324179A Granted JPS55134824A (en) | 1979-04-09 | 1979-04-09 | Automatic dimming strobe device |
Country Status (3)
Country | Link |
---|---|
US (1) | US4301392A (US07922777-20110412-C00004.png) |
JP (1) | JPS55134824A (US07922777-20110412-C00004.png) |
GB (1) | GB2047416B (US07922777-20110412-C00004.png) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5714831A (en) * | 1980-07-01 | 1982-01-26 | West Electric Co Ltd | Electronic flash device |
JPH0228509Y2 (US07922777-20110412-C00004.png) * | 1981-03-16 | 1990-07-31 | ||
JPS5979233A (ja) * | 1982-10-28 | 1984-05-08 | Canon Inc | 閃光装置 |
US5982112A (en) * | 1992-06-04 | 1999-11-09 | David A. Pringle | Low pressure xenon lamp and driver circuitry for use in theatrical productions and the like |
US6078145A (en) * | 1996-12-10 | 2000-06-20 | Weldon Technologies, Inc. | Synchronous two wire multiple strobe autotrigger control circuit |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS522619B2 (US07922777-20110412-C00004.png) * | 1972-05-30 | 1977-01-22 | ||
JPS51117624A (en) * | 1975-04-08 | 1976-10-15 | Canon Inc | Flashlight unit warning circuit |
-
1979
- 1979-04-09 JP JP4324179A patent/JPS55134824A/ja active Granted
-
1980
- 1980-04-02 GB GB8011138A patent/GB2047416B/en not_active Expired
- 1980-04-03 US US06/136,882 patent/US4301392A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
GB2047416A (en) | 1980-11-26 |
JPS55134824A (en) | 1980-10-21 |
GB2047416B (en) | 1983-03-09 |
US4301392A (en) | 1981-11-17 |