ashwright wrote:How many amps do you need to draw on the 12v?
I have seen some small DC-DC 48V -> 12V converters which are around 90% efficient and can handle around the 10-50A mark.
For example something like this:
http://au.mouser.com/ProductDetail/Mean ... TarlfTs%3d
There are plenty more versions on that site.
999zip999 wrote:A little expensive. So I know 12v is your desire, but what is the pro side of 48v solar storage and 12v output ?
teklektik wrote:It seems like your selected inverter (6kW)is considerably larger than you projected need of 200W.
One possibility is to use a few more small DC/DC converters - for instance these Green Galaxy units from ThunderStruck Motors...
Here's an ES thread about re-purposing switching power supplies. The little Toshiba ADP-60RH seems to work well at 48v and can be had for about $10 a pop (eBay – ‘toshiba ADP-60RH'). Nice little waterproof package with easy hookup.
Using a few smaller inverters would also give you a better soft-fail situation...
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