I had written a comment on a MOOC just now but I feel quite attached to it and it would be a shame not to share these concepts here.
It was part of a discussion of technology in mains power and its future. There’s a few concepts which I mention which I think people may like to discuss further so tell me what you think, here’s it copied and pasted below:
“I think it may be a thing that the frequency of AC is likely to change. We have power at 50Hz AC but switching frequencies of a few thousand Hz can be more efficient when transforming, and they need smaller transformers too. Switch mode power supplies are why we rarely see those chunky charges and adaptors anymore. As we find a lot of things using switch mode power supplies, to produce lower dc voltages, we might find it helpful to have most of the components integrated into the plug socket and the device sending information back to the socket telling it how much voltage it needs.
I’d be very happy to not have to carry around as chunky a charger we have to now.
As for wireless electricity, I think it’s incredibly wasteful. A lot is wasted in heat and the power drops when moving coils a short distance away. I think we’re sticking with wired until technology gets better.
Maybe the answer to wireless power is light. Specifically infra red light focused onto a sort of solar panel on the device. Using infra red will stop us from getting blinded by the extra energy about.”
Tell me what you think about any of the points, and if you have ideas for the future of mains please share them.