JPS54113330A - Solar cell built-in camera - Google Patents
Solar cell built-in cameraInfo
- Publication number
- JPS54113330A JPS54113330A JP2065778A JP2065778A JPS54113330A JP S54113330 A JPS54113330 A JP S54113330A JP 2065778 A JP2065778 A JP 2065778A JP 2065778 A JP2065778 A JP 2065778A JP S54113330 A JPS54113330 A JP S54113330A
- Authority
- JP
- Japan
- Prior art keywords
- solar cell
- transistor
- electromotive force
- unit
- shielded
- 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 make it possible to extract an electromotive force, even if solar cell units are partially shielded, by short-circuiting the solar cell which is shielded by the hand of a photographer during photography so that it is rendered inoperative.
CONSTITUTION: A voltage level difference corresponding to the electromotive force of a solar cell is impressed between the two input terminals of comparator circuits 27 to 32 which are connected in parallel with the solar cells 21 to 26 connected in series. If, in this instance, the incident light upon the unit 24 is shielded so that the electromotive force of the unit 24 is lowered, the potential difference between the two terminals of that unit is reduced to substantial zero so that the output of the comparator circuit 30 is reduced to a lower level. Thus, a transistor 36 is rendered conductive so that the solar cell 24 is short-circuited through the emitter and collector of the transistor. As a result, the current to be generated by the remaining solar cells flows through the transistor 36 so that the secondary battey can be charged.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2065778A JPS54113330A (en) | 1978-02-24 | 1978-02-24 | Solar cell built-in camera |
US06/013,550 US4328456A (en) | 1978-02-24 | 1979-02-21 | Camera with solar batteries connected in series or parallel |
DE19792907155 DE2907155A1 (en) | 1978-02-24 | 1979-02-23 | POWER SUPPLY SYSTEM WITH SOLAR BATTERIES |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2065778A JPS54113330A (en) | 1978-02-24 | 1978-02-24 | Solar cell built-in camera |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54113330A true JPS54113330A (en) | 1979-09-04 |
Family
ID=12033276
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2065778A Pending JPS54113330A (en) | 1978-02-24 | 1978-02-24 | Solar cell built-in camera |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54113330A (en) |
-
1978
- 1978-02-24 JP JP2065778A patent/JPS54113330A/en active Pending
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