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Aurornisyesterday at 9:04 PM1 replyview on HN

This is called an online UPS and it's still a thing.

It's not a good option for home use because it's always sending power through an inefficient path. The devices we use have power supplies that can handle transients and fluctuations.


Replies

scottlambyesterday at 10:23 PM

Where is it a good option? I'd expect datacenters to be more focused on efficiency, not less.