The thing is, those wall USB ports don’t tend to output at the regular USB maximum. Just like the adapters, they tend to put out more juice (if the device indicates it can take it). So an adapter for those situations might be useful–in theory.
But for plugging into your PC? You’re not getting much juice out of that. Your best bet is to stick with a DC device, and not convert back to AC at all. Hence this sort of cable.
Those wall sockets provide a maximum of 2.1amp at 5 Volt, most only supply up to 1amp.
Let’s plug in a freezer, heater, washing machine and TV into that.
I wonder, why they ever bothered with 110/120V or 220V/230V, when 5 Volt is all you need? :smack:
I’m sure MacGyver can power a car via a mobile phone doing 90mph and have a missile guiding system up and running in no time, while making phone calls and playing Candy Crush Saga on Facebook - all running from the same phone.
From my twice reading of the Original Post, Darth wants a cord that plugs into an 110 VAC outlet and will power a USB device. Within my arm’s reach, I’ve got two transformers with a 110VAC plug on one side and a USP jack on the other plugged into a power strip. I use them to charge my Nook HD+ and my iPhone.
How does a female AC cord plug into a 110VAC outlet? His responses don’t sound like that’s what he wants, and what you describe are as common as breath mints these days.
That’s exactly what he wants. And while I don’t think there is such a thing as a USB powered coffee pot, they do have coffee mug warmers that are powered by the USB port. (Obviously the power requirements are much lower.)