why do computer charges have that big block

Question

for example, on my windows laptop, there is the plug that goes into the outlet, some wire, a big block of plastic, and then more wire that connects to the charger that goes into the charging port. why is that block there?

In: Technology

Answer 1

the big block takes the power from the wall (which is alternating current) and transforms it into a form the laptop can use (direct current). If you think of it like a waterpark, alternating current is like a wavepool, very chaotic. Direct current is like the lazy river, a nice constant flow.