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

Outlet electricity is too strong and wiggles too much to charge a laptop directly, the brick smoothed it out and makes it gentle enough so it won’t fry the laptop’s circuits.