UPS Ideas ?
This could be for an RV where there have been posts about TV receivers etc getting knocked out by slow switching 120v power inputs. In this case it is in the stick house. I have jury-rigged somethin...
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Do the two things that need to be powered really need 120V or are they using "wall warts" to provide DC from 120V? Most routers and modems use 5-12VDC. If that's the case, I would consider a "DC UPS" Something like this or this Much more efficient than converting 12V to 120V to convert it back down to 5 or 12V. There are lots of similar battery banks available, just make sure they can be used while they are charging as some of them are meant just to be used as a portable phone charger and not while they are being charged.
