To enable a solar battery power unit to exhaustively utilize the insolation energy.
A first power source 10 constituted by combining a solar battery 11 with a battery 12 and a power source which is formed by rectifying the electric power from a commercial AC power source 20 by means of a controlled rectifier circuit 21 are connected in parallel with a load 30 and the charging of the battery 12 from the AC power source 20 side is inhibited by means of a diode 14. The charged quantity of the battery 12 is measured by means of a charged quantity measuring circuit 15 and the circuit 21 sets the higher the power supply ratio from the AC power source 20 the smaller the charged quantity of the battery 12 is. Therefore, the insolation energy of the next day can be exhaustively stored in the battery 12, because the battery 12 is not charged form the AC power source side 20 and is maintained at a safe discharged depth.
KONUKI TEN
KUROSAWA MASAMI
NAKAMURA EIJI
ISHIDA AKIRA
MITANI YOSHINORI
YOSHIDA MASAAKI
TOYAMA YUKIO
UNIV WASEDA
KYOCERA CORP
SUMITOMO DENSETSU CORP
SUMITOMO ELECTRIC INDUSTRIES
KANTO DENKI KOJI
TOYOKUNI DENSEN KK
JIEIKOSU KK