JPS57132125A - Power supply controller of camera - Google Patents
Power supply controller of cameraInfo
- Publication number
- JPS57132125A JPS57132125A JP20890281A JP20890281A JPS57132125A JP S57132125 A JPS57132125 A JP S57132125A JP 20890281 A JP20890281 A JP 20890281A JP 20890281 A JP20890281 A JP 20890281A JP S57132125 A JPS57132125 A JP S57132125A
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- switch
- exposure
- circuit
- camera
- 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
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B7/00—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly
- G03B7/26—Power supplies; Circuitry or arrangement to switch on the power source; Circuitry to check the power source voltage
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Exposure Control For Cameras (AREA)
- Camera Bodies And Camera Details Or Accessories (AREA)
Abstract
PURPOSE:To realize the power supply to each circuit with high efficiency, by constituting a circuit so that the power supply control is started by the starting operation of a camera and the power supply control is finished in the resetting step of a start operation means. CONSTITUTION:A display device ID which works by the 1st stroke of the shutter release is made inactive except the registers that stores the contents of display during an exposure action and then made active again after exposure. The transistors TR7 and TR8 forming a power supply circuit of the device ID are controlled by the output signal of an OR gate G22. In other words, the power supply circuits TR7 and TR8 work when a switch S1 is closed while the film is advanced and discontinue their working temporarily when a switch S5 is opened with the start of the front curtain blade, i.e., at the starting moment of exposure. Then the circuits TR7 and TR8 are active again with the opening of a switch S4 which opens when the rear curtain speed starts, i.e., at the starting moment of exposure and then become inactive with the opening of the switch S1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20890281A JPS57132125A (en) | 1981-12-23 | 1981-12-23 | Power supply controller of camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20890281A JPS57132125A (en) | 1981-12-23 | 1981-12-23 | Power supply controller of camera |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP49147842A Division JPS5173439A (en) | 1974-10-07 | 1974-12-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57132125A true JPS57132125A (en) | 1982-08-16 |
Family
ID=16564012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20890281A Pending JPS57132125A (en) | 1981-12-23 | 1981-12-23 | Power supply controller of camera |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57132125A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5072631A (en) * | 1973-10-26 | 1975-06-16 |
-
1981
- 1981-12-23 JP JP20890281A patent/JPS57132125A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5072631A (en) * | 1973-10-26 | 1975-06-16 |
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