JPS5581327A - Power source device of flash device - Google Patents
Power source device of flash deviceInfo
- Publication number
- JPS5581327A JPS5581327A JP15519578A JP15519578A JPS5581327A JP S5581327 A JPS5581327 A JP S5581327A JP 15519578 A JP15519578 A JP 15519578A JP 15519578 A JP15519578 A JP 15519578A JP S5581327 A JPS5581327 A JP S5581327A
- Authority
- JP
- Japan
- Prior art keywords
- transformer
- oscillation
- power source
- voltage
- capacitor
- 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
Landscapes
- Stroboscope Apparatuses (AREA)
- Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
- Dc-Dc Converters (AREA)
Abstract
PURPOSE:To make the breaking adjustment of an oscillation circuit for charging a main capacitor easy and sure by adjusting the voltage to be generated on the secondary side of an oscillation transformer by a variable resistance. CONSTITUTION:When a switch 3 is closed for the specified second time for the purpose of flash photography, a transistor 5 is conducted by way of the feedback coil 4b of an oscillation transformer 4 and the primary side of the transformer 4 oscillates according to the inductance of the transformer 4 and the capacity of the capacitor 7. Thereby, the oscillation voltage is generated in the secondary side of the transformer 4 and the main capacitor 17 for flash light emission is charged by the rectifying current by a diode 11, etc. In this case the high voltage current generated in the secondary coil 4c of the transformer 4 is bypassed to the minus side of the capacitor 17 through the variable resistance 13 provided to the bypass circuit, and this results in the decreased generating voltage of the coil 4b of the transformer, the stoppage of the oscillation by the transistor 5 and the cutoff of the power source supply to the oscillation circuit. Hence, when the resistance value of the resistance 13 is changed, the adjustment of the power source breaking timing may be readily adjusted.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15519578A JPS5581327A (en) | 1978-12-16 | 1978-12-16 | Power source device of flash device |
NL7901544A NL7901544A (en) | 1978-02-28 | 1979-02-27 | POWER SUPPLY DEVICE FOR ELECTRIC FLASH APPLIANCES. |
FR7905011A FR2418603A1 (en) | 1978-02-28 | 1979-02-27 | POWER SUPPLY FOR AN ELECTRONIC FLASH |
DE19792907784 DE2907784A1 (en) | 1978-02-28 | 1979-02-28 | POWER SUPPLY DEVICE FOR ELECTRIC FLASH UNITS |
GB7906977A GB2019675B (en) | 1978-02-28 | 1979-02-28 | Power supply arrangement for an electric flash tube |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15519578A JPS5581327A (en) | 1978-12-16 | 1978-12-16 | Power source device of flash device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5581327A true JPS5581327A (en) | 1980-06-19 |
Family
ID=15600562
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15519578A Pending JPS5581327A (en) | 1978-02-28 | 1978-12-16 | Power source device of flash device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5581327A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5740236A (en) * | 1980-08-22 | 1982-03-05 | Nippon Kogaku Kk <Nikon> | Flash for camera |
-
1978
- 1978-12-16 JP JP15519578A patent/JPS5581327A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5740236A (en) * | 1980-08-22 | 1982-03-05 | Nippon Kogaku Kk <Nikon> | Flash for camera |
JPH0381139B2 (en) * | 1980-08-22 | 1991-12-27 | Nippon Kogaku Kk |
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