JPS6489196A - Lighting device for ac type flash lamp - Google Patents
Lighting device for ac type flash lampInfo
- Publication number
- JPS6489196A JPS6489196A JP24366687A JP24366687A JPS6489196A JP S6489196 A JPS6489196 A JP S6489196A JP 24366687 A JP24366687 A JP 24366687A JP 24366687 A JP24366687 A JP 24366687A JP S6489196 A JPS6489196 A JP S6489196A
- Authority
- JP
- Japan
- Prior art keywords
- capacitor
- voltage
- pxa
- charged
- phase control
- 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
- Exposure Or Original Feeding In Electrophotography (AREA)
- Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
Abstract
PURPOSE:To light a flash lamp invariably with the fixed voltage by providing a means controlling a phase control element so that a phase control element control circuit detects the fluctuation of the input voltage or the fluctuation of the output voltage and the fixed voltage is charged in a charging and discharging capacitor in a resonance circuit. CONSTITUTION:When a phase control element 14 is turned on, the voltage of an AC power source 1 is resonated by a resonance circuit 11, and the voltage can be varied by selecting the values of a choke coil 2 and a capacitor 3. When the preset voltage is charged across the capacitor 3, a bipolar switch element control circuit 4 turns the gate of a bipolar switch element 5 on, charges charged in a capacitor 6 on the primary side of the transformer 7 of a trigger circuit 12 are discharged, the high voltage is induced on a trigger electrode 9 to trigger a PXA 10. There is a slight time lag before the discharge current by the energy of the capacitor 3 flows through the PXA 10, and the element 5 is kept conducting during this time. When the potential of the capacitor 3 is decreased and the current flowing through the element 5 becomes 0, the PXA 10 is turned off.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24366687A JPS6489196A (en) | 1987-09-30 | 1987-09-30 | Lighting device for ac type flash lamp |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24366687A JPS6489196A (en) | 1987-09-30 | 1987-09-30 | Lighting device for ac type flash lamp |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6489196A true JPS6489196A (en) | 1989-04-03 |
Family
ID=17107193
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP24366687A Pending JPS6489196A (en) | 1987-09-30 | 1987-09-30 | Lighting device for ac type flash lamp |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6489196A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110020028A1 (en) * | 2009-07-23 | 2011-01-27 | Canon Kabushiki Kaisha | Image forming apparatus and voltage generation circuit |
-
1987
- 1987-09-30 JP JP24366687A patent/JPS6489196A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110020028A1 (en) * | 2009-07-23 | 2011-01-27 | Canon Kabushiki Kaisha | Image forming apparatus and voltage generation circuit |
US8326171B2 (en) * | 2009-07-23 | 2012-12-04 | Canon Kabushiki Kaisha | Image forming apparatus and voltage generation circuit |
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