JPS5518611A - Strobe circuit of camera - Google Patents
Strobe circuit of cameraInfo
- Publication number
- JPS5518611A JPS5518611A JP9080278A JP9080278A JPS5518611A JP S5518611 A JPS5518611 A JP S5518611A JP 9080278 A JP9080278 A JP 9080278A JP 9080278 A JP9080278 A JP 9080278A JP S5518611 A JPS5518611 A JP S5518611A
- Authority
- JP
- Japan
- Prior art keywords
- strobe
- transistor
- oscillation
- shutter
- oscillation circuit
- 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)
Abstract
PURPOSE: To achieve the reduction of power consumption by controlling the oscillation of the strobe oscillation circuit in the strobe circuit of a camera in which the power source for the strobe including the oscillation circuit is also used commonly for other loads with the difference of a semiconductor threshold level.
CONSTITUTION: A strobe oscillation circuit is constituted by a transistor Tr 1 of a high threshold level such as silicon transistor and a diode D1 of a low threshold level such as a germanium diode whose anode is connected to the base of said transistor Tr 1 and whose cathode is connected to one end of a shutter switch S1 is connected to said transistor. As a result, when a strobe main switch S2 is turned on for the strobe photography, the Tr 1 repeats switching and a main capacitor C3 is charged. When the shutter main switch S1 is turned ON by depressing the shutter button to supply power source E to a shutter control circuit 1, D1 is parallel connected between the base and emitter of Tr 1 and Tr 1 goes OFF to stop the oscillation of the oscillation circuit, thereby stopping charging to the capacitor C3.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9080278A JPS5518611A (en) | 1978-07-25 | 1978-07-25 | Strobe circuit of camera |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9080278A JPS5518611A (en) | 1978-07-25 | 1978-07-25 | Strobe circuit of camera |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5518611A true JPS5518611A (en) | 1980-02-08 |
Family
ID=14008712
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9080278A Pending JPS5518611A (en) | 1978-07-25 | 1978-07-25 | Strobe circuit of camera |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5518611A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57130827U (en) * | 1981-02-06 | 1982-08-14 | ||
JPS60123172A (en) * | 1983-12-06 | 1985-07-01 | Canon Inc | Image pickup device |
JPS62179728U (en) * | 1987-04-17 | 1987-11-14 | ||
JPH0386335U (en) * | 1989-12-22 | 1991-08-30 | ||
JPH076142U (en) * | 1993-06-30 | 1995-01-27 | 弘 本多 | Wettable bag |
-
1978
- 1978-07-25 JP JP9080278A patent/JPS5518611A/en active Pending
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57130827U (en) * | 1981-02-06 | 1982-08-14 | ||
JPS60123172A (en) * | 1983-12-06 | 1985-07-01 | Canon Inc | Image pickup device |
JPH0137071B2 (en) * | 1983-12-06 | 1989-08-03 | Canon Kk | |
JPS62179728U (en) * | 1987-04-17 | 1987-11-14 | ||
JPH036897Y2 (en) * | 1987-04-17 | 1991-02-21 | ||
JPH0386335U (en) * | 1989-12-22 | 1991-08-30 | ||
JPH076142U (en) * | 1993-06-30 | 1995-01-27 | 弘 本多 | Wettable bag |
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