437641.fig.002a
(a)
437641.fig.002b
(b)
437641.fig.002c
(c)
Figure 2: (a) Conceptual diagram of operation of RCP circuit and the serial architecture in weak sunlight condition, (b) conceptual diagram of operation of RCP circuit and the parallel-serial architecture in moderate sunlight condition, and (c) conceptual diagram of operation of RCP circuit and the parallel architecture in strong sunlight condition.