As far as I understand, a DCDC converter is less efficient and more expensive than an equivalent ACAC converter. I don’t know about switching power supplies, and whether that’s true or extendable to the transformer case, sorry.
Long distance point to point power transmission (like internationally) is often DC because transmission losses become more important.
They’re more efficient than old school ac-dc linear supplies (of which an ac transformer is just a part of). However if you just want to step up or down ac voltage, transformers are quite efficient.
Also if we switched to DC, you’d need costly dcdc transformers to step up the voltage for transmission and back down again for domestic usage
Aren’t switching mode power supplies smaller and more efficient than regular AC transformers anyway?
As far as I understand, a DCDC converter is less efficient and more expensive than an equivalent ACAC converter. I don’t know about switching power supplies, and whether that’s true or extendable to the transformer case, sorry.
Long distance point to point power transmission (like internationally) is often DC because transmission losses become more important.
They’re more efficient than old school ac-dc linear supplies (of which an ac transformer is just a part of). However if you just want to step up or down ac voltage, transformers are quite efficient.