i have a problem.
the photovoltaic panels collect the solar power and stores it in the batteries. at the night the outdoor ligthing is supplied by those batteries. when the batteries do not supply the lights because of discharge or breakdown, the lights will be supplied by grid.
could you tell me name of this method (voltage switcher etc.) or is there any device that does this switching?
thanks in advance.
its for u. and decide which is ur requerment. http://rapidshare.com/files/85205981/Green_Power__Campex_3.ppt