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Can I run a computer using DC power?

Fresh7 days ago
Mar 15, 202620584 views
Confidence Score0%
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Problem

I always thought that using a conventional UPS with a PC is highly inefficient. Power goes from AC -> DC -> AC in UPS and then AC -> DC in PC SMPS. Since PC works only with DC (12, 5 and 3 volts) It should be possible to convert AC -> DC once and use that to charge SLA battery and drive a PC. Sure …

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Fix for: Can I run a computer using DC power?

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Google does exactly that! They do not have the UPS in the datacenter, they have the UPS on the machine itself, and feed DC to the mainboard. And they are only feeding 12V, as it is more energy efficient than lower voltages.

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