JPS5512929A - Charging voltage notifying device for electronic flashing equipment - Google Patents
Charging voltage notifying device for electronic flashing equipmentInfo
- Publication number
- JPS5512929A JPS5512929A JP8559278A JP8559278A JPS5512929A JP S5512929 A JPS5512929 A JP S5512929A JP 8559278 A JP8559278 A JP 8559278A JP 8559278 A JP8559278 A JP 8559278A JP S5512929 A JPS5512929 A JP S5512929A
- Authority
- JP
- Japan
- Prior art keywords
- main capacitor
- response
- sound
- charging voltage
- 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.)
- Granted
Links
Abstract
PURPOSE:To confirm the brightness control operation by means of sound by generating the sound of pitch responsive to the charging state of a main capacitor. CONSTITUTION:The outputs of comparators 19-17 each having different standard voltage input in a notifying unit B are sequentially inverted in response to the charging state of a main capacitor 4 in a flashing circuit A to thereby conduct sequentially transistors 22-20 to thus cause a pulse generator 23 to generate pulses of different periods, which are applied through diodes 28-26 to the base of a transistor 29. Thus, the transistor 29 turns on and off in response to the output pulse period of the generator 23. Thus, a sound producing unit 30 produces sounds of different frequency in response to the charged state of the main capacitor to thereby notify the pitch by the stepwise charged voltage at the main capacitor.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53085592A JPS5927889B2 (en) | 1978-07-12 | 1978-07-12 | electronic flash device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53085592A JPS5927889B2 (en) | 1978-07-12 | 1978-07-12 | electronic flash device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5512929A true JPS5512929A (en) | 1980-01-29 |
JPS5927889B2 JPS5927889B2 (en) | 1984-07-09 |
Family
ID=13863079
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP53085592A Expired JPS5927889B2 (en) | 1978-07-12 | 1978-07-12 | electronic flash device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5927889B2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56144425A (en) * | 1980-04-14 | 1981-11-10 | Olympus Optical Co Ltd | Electic charge displaying circuit of flash emitting device |
JPS56147136A (en) * | 1980-04-18 | 1981-11-14 | Oki Electric Ind Co Ltd | Strobe reporting circuit |
JPS60187439A (en) * | 1984-03-07 | 1985-09-24 | Nippon Koki Kk | Method for fixing metallic walls to each other |
-
1978
- 1978-07-12 JP JP53085592A patent/JPS5927889B2/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56144425A (en) * | 1980-04-14 | 1981-11-10 | Olympus Optical Co Ltd | Electic charge displaying circuit of flash emitting device |
JPS56147136A (en) * | 1980-04-18 | 1981-11-14 | Oki Electric Ind Co Ltd | Strobe reporting circuit |
JPS60187439A (en) * | 1984-03-07 | 1985-09-24 | Nippon Koki Kk | Method for fixing metallic walls to each other |
JPH0454530B2 (en) * | 1984-03-07 | 1992-08-31 | Nippon Koki Kk |
Also Published As
Publication number | Publication date |
---|---|
JPS5927889B2 (en) | 1984-07-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CH647381GA3 (en) | ||
JPS5512929A (en) | Charging voltage notifying device for electronic flashing equipment | |
JPS6470808A (en) | Driving circuit for semiconductor device | |
US3254336A (en) | Sound simulation system | |
JPS5412249A (en) | Saw-tooth wave generator | |
CA2110468A1 (en) | Apparatus for Generating a Trigger Signal Used to Transmit an Ultrasonic Wave | |
US3889256A (en) | Automatic control for audible electronic warning system | |
JPS5217758A (en) | Pulse generator circuit | |
JPS5583872A (en) | Information sound generation circuit | |
JPS5419640A (en) | One shot pulse generating circuit at power aplication | |
SU1072043A1 (en) | Random pulse generator | |
SU366559A1 (en) | POWER VOLTAGE GENERATOR | |
JPS56125682A (en) | Lighting device for electronic watch | |
JPS56140402A (en) | Operating device | |
JPS57150027A (en) | Keyboard encoder | |
JPS5727485A (en) | Rotating magnetic field driving device | |
JPS5457081A (en) | Load indicator for control computer | |
JPS5248493A (en) | Generating circuit for electronic signal sound | |
JPS5745475A (en) | Pulse generator | |
JPS5483477A (en) | Electronic time striking circuit | |
JPS6459392A (en) | Musical sound generation circuit | |
JPS5754888A (en) | Electronic time piece with built-in speaker | |
JPS5762769A (en) | Phase angle controlling circuit for thyristor converter | |
JPS57103431A (en) | Pulse generating circuit | |
GB1322572A (en) | Electronic rhythm apparatus |