Why can most household appliances run off AC but things like phones and computers require DC?

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Just wondering cus like wouldn’t it be more convenient to just plug your phone into the wall without a brick, or like cheaper to build a pc without a power supply? why do these devices need DC but lamps, fridges, fans, most household appliances can run off AC?

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Anonymous 0 Comments

Generally speaking. If it has a motor or heating element it will run off AC. If it has any sort of logic board it will run off DC, and if it has both. Like in the case of a refrigerator, it will use both and have a AC to DC circuit built in. Reason is logic boards need not just DC but low voltage DC to work.

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