| 摘要 |
PURPOSE:To improve the service life of a secondary battery by disposing an electric double layer cell in the post-stage of a solar cell, arranging secondary batteries in parallel and converting the outputs therefrom into pulses, combining the pulses into a high frequency composite pulse signal, and then feeding back the composite signal to the input side while converting it into DC power. CONSTITUTION:The power supply comprises a unit 8 for combining the output from an oscillator 9 with a pulse to produce a composite pulse, and an integrating circuit 10 for smoothing the composite pulse. A DC power supply 11 is fed back through a feedback circuit 12 to the input side of an electric double layer cell 3 and the electric capacity of the DC power supply 11 is one third or less that of a secondary battery 4. An electronic chopper 5 is disposed in the post-stage of the secondary battery 4 in order to convert DC power into pulses thus actuating the oscillator 9. It is combined again with pulses to produce high frequency mixture pulses 7 which are then returned through a smoothing circuit 10 back to DC power 11 and fed back through the feedback circuit to the input side of the electric double layer cell. This circuit enhances the service life of the secondary battery significantly. |
