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?
In: Other
Anything using transistors (so pretty much all electronics) and / or batteries will use DC, because both of those elements fundamentally work on DC. It’s part of how they physically function.
It’s possible to create a sort of imitation AC out of the DC supplied by batteries, but it’s rarely necessary. It’s kinda sorta done with brushless DC motors.
Other things, like electric motors, incandescent bulbs, heaters etc. run on AC because they can, that’s what’s in the wall. In case of electric motors, AC are actually simpler than DC motors. So are transformers. Other things could run just as well off of DC, but why bother.
Latest Answers