JPS5447639A - Flash light emission controller - Google Patents
Flash light emission controllerInfo
- Publication number
- JPS5447639A JPS5447639A JP11433877A JP11433877A JPS5447639A JP S5447639 A JPS5447639 A JP S5447639A JP 11433877 A JP11433877 A JP 11433877A JP 11433877 A JP11433877 A JP 11433877A JP S5447639 A JPS5447639 A JP S5447639A
- Authority
- JP
- Japan
- Prior art keywords
- charging voltage
- circuit
- actuates
- led
- flash photographing
- 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
Abstract
PURPOSE:To detect the charging voltage of a main capacitor and display this by detecting the oscillation frequencies of a boosting oscillator within a strobe device. CONSTITUTION:A display control circuit B which detects the charging voltage of a strobe control circuit A through the oscillation frequencies of a boosting circuit 1 is constituted by a waveform shaping circuit 20 and frequency detection circuits 30, 40, 50. The frequency detection circuits 30, 40 50 are provided respectively with LEDs 37, 47, 57 as display devices. When the charging voltage of a capacitor 7 reaches a specified value, the detection circuit 30 first actuates and this is displayed with the LED 37. Further when the charging voltage reaches flash photographing ready state, the detection circuit 40 actuates to indicate with the LED 47 that flash photographing is ready. When the charging voltage reaches the full charging voltage, the detection circuit 50 actuates to indicate with the LED 57 that the flash photographing range has expanded.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11433877A JPS5447639A (en) | 1977-09-21 | 1977-09-21 | Flash light emission controller |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11433877A JPS5447639A (en) | 1977-09-21 | 1977-09-21 | Flash light emission controller |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5447639A true JPS5447639A (en) | 1979-04-14 |
Family
ID=14635275
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11433877A Pending JPS5447639A (en) | 1977-09-21 | 1977-09-21 | Flash light emission controller |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5447639A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS622033U (en) * | 1985-06-20 | 1987-01-08 |
-
1977
- 1977-09-21 JP JP11433877A patent/JPS5447639A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS622033U (en) * | 1985-06-20 | 1987-01-08 | ||
JPH0514270Y2 (en) * | 1985-06-20 | 1993-04-16 |
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