It is very useful as you can see that it takes 2input power thus utilizes only one of them in case of if one is not available......Ive using this circuit for my Wifi router......inputs are such as.... 1.from an ac adapder 2.from solar power......in case of there is no Ac then it automatically switches to solar power and when ac is available it prefers to switch to ac only as solar is only for backup purpose......buh it has a little defect.....that when ac goes off it takes a bit time to switch back on.....i think due to the precence of a bit ac power in the adapder.....anyway if anyone could help plz coment
