A bright spot in the the history of mobile phones was the near universal adoption of micro-USB charging, and creation of a 30mW standby limit for high-quality plug-in chargers. Nokia (now Microsoft), ...
I was looking at power boards in a hardware shop yesterday and noticed that a) many of them had USB sockets, and that b) the ratings for the USB sockets varied widely, from 1A to 3A. If I wanted to ...
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