초록 ▼

A charge circuit for secondary batteries. The charge circuit encompasses a control circuit having as a power source accumulators chargeable with the current resulting from the electromotive force of a plural number of solar batteries built in a camera. The plural number of the solar batteries are di

A charge circuit for secondary batteries. The charge circuit encompasses a control circuit having as a power source accumulators chargeable with the current resulting from the electromotive force of a plural number of solar batteries built in a camera. The plural number of the solar batteries are distributed at a plural number of portions on the exterior of the camera. The plural number of the solar batteries are connected in series or parallel or, in accordance with necessity, a serial-parallel connection change-over of the solar batteries is carried out. Circuits for comparing the level at both terminals of each solar battery and for short-circuiting the terminal in accordance with the result of the comparison are provided.

대표청구항 ▼

A camera using a solar battery as a power source, comprising: a first solar battery group including a plural number of solar batteries connected in series, said plural number of solar batteries being arranged in a dispersed manner on the surface of the camera; a second solar battery group including

A camera using a solar battery as a power source, comprising: a first solar battery group including a plural number of solar batteries connected in series, said plural number of solar batteries being arranged in a dispersed manner on the surface of the camera; a second solar battery group including a plural number of solar batteries connected in series, said plural number of solar batteries being arranged in a dispesed manner on the surface of the camera; an accumulator to be charged with the photo-current produced with the first and the second solar battery groups; non-return means connected between the first and the second means on the one hand, and the accumulator on the other hand, to prevent back current flow from the accumulator; light measuring means connected to the accumulator, said means producing a signal corresponding to the brightness; signal producing means for producing a signal corresponding to the voltage of the accumulator as a standard signal; brightness detection means connected to the accumulator, said means comparing the output signal from the light measuring means with the standard signal from the signal producing means to produce a first signal when the output signal from the light measuring means is higher than the standard signal and a second signal when the output signal from the light measuring means is lower than the standard signal; and change-over means for controlling the serial-parallel connection change-over of the first and second solar battery groups, said means connecting the first and the second solar battery groups in parallel when the first signal is applied and in series when the second signal is applied.