I'm curious why, if I want to buy say a 24V, 75VAC transformer (so a little over 3A at 24V), I'm looking at a pretty chunky piece of iron.
On the other hand, I can find a ~24V laptop power supply that can handle 3+A and it doesn't need nearly as much iron to make that happen. I get that the laptop is doing a converter of some kind, but I assume there's a transformer somewhere in there moving 3A of juice. How can it be so much smaller and lighter?
On the other hand, I can find a ~24V laptop power supply that can handle 3+A and it doesn't need nearly as much iron to make that happen. I get that the laptop is doing a converter of some kind, but I assume there's a transformer somewhere in there moving 3A of juice. How can it be so much smaller and lighter?