JPS57118232A - Strobo device - Google Patents
Strobo deviceInfo
- Publication number
- JPS57118232A JPS57118232A JP56004039A JP403981A JPS57118232A JP S57118232 A JPS57118232 A JP S57118232A JP 56004039 A JP56004039 A JP 56004039A JP 403981 A JP403981 A JP 403981A JP S57118232 A JPS57118232 A JP S57118232A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- charging
- switch
- reference voltage
- detected
- 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.)
- Pending
Links
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)
- Stroboscope Apparatuses (AREA)
- Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
Abstract
PURPOSE:To obtain the desired volume of emitted light with high accuracy, by providing the 1st switch in series to a charging path and a discharging path including the 2nd switch in parallel to a charging capacitor. CONSTITUTION:The AC voltage boosted by boosting transformers 1 and 2 is rectified by a rectifying circuit 3 and charges a charging capacitor 4. The charging voltage detected by a voltage dividing circuit 9 is supplied to a comparator 10 to be compared with the reference voltage Vref. If the detected voltage is less than the reference voltage, the 1st switch 6 is closed. Then the charging is continued until the detected voltage becomes in coincidence with the reference voltage. On the contrary, if the detected voltage is more than the reference voltage, the 2nd switch 8 is closed. Then the electric charge of the capacitor 4 is discharged continuously via a discharge resistance 7 until coincidence is obtained between both voltages.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56004039A JPS57118232A (en) | 1981-01-14 | 1981-01-14 | Strobo device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56004039A JPS57118232A (en) | 1981-01-14 | 1981-01-14 | Strobo device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57118232A true JPS57118232A (en) | 1982-07-23 |
Family
ID=11573807
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56004039A Pending JPS57118232A (en) | 1981-01-14 | 1981-01-14 | Strobo device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57118232A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6090323A (en) * | 1983-10-24 | 1985-05-21 | Olympus Optical Co Ltd | Stroboscopic device |
JPS60115196A (en) * | 1983-11-25 | 1985-06-21 | 富士ゼロックス株式会社 | Power source for flash lamp |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5130729A (en) * | 1974-09-09 | 1976-03-16 | Fuji Photo Optical Co Ltd | SUTOROBOHATSUKO SOCHI |
JPS5426022A (en) * | 1977-07-30 | 1979-02-27 | Nat Jutaku Kenzai | Device for attaching parapet |
-
1981
- 1981-01-14 JP JP56004039A patent/JPS57118232A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5130729A (en) * | 1974-09-09 | 1976-03-16 | Fuji Photo Optical Co Ltd | SUTOROBOHATSUKO SOCHI |
JPS5426022A (en) * | 1977-07-30 | 1979-02-27 | Nat Jutaku Kenzai | Device for attaching parapet |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6090323A (en) * | 1983-10-24 | 1985-05-21 | Olympus Optical Co Ltd | Stroboscopic device |
JPS60115196A (en) * | 1983-11-25 | 1985-06-21 | 富士ゼロックス株式会社 | Power source for flash lamp |
JPH0522360B2 (en) * | 1983-11-25 | 1993-03-29 | Fuji Xerox Co Ltd |
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