dc-dc Buck vs boost efficiency
When you use solar panels and have gadgets with different voltage requirements that you want to power up.
I need atleast 2 different outputs, 5v and 12v ,
so which is most efficient , 12/15v panels that you regulate to 5v , or 5v panels boosted to 12v?
is there any general advantage in either case
and i,m talking about using cheap ebay switch regulators / boost converters, not anything expensive hi tech.