I can’t find my earplugs

What type of power supply can operate in different countries that have different voltages?

A) High-voltage

B) Primary

C) Notched

D) Switching

E) Have you updated your passport?

The answer: D) Switching

A switching power supply can be used for both 110 volts and 220 volts, making it easy to go between different power standards without changing the power supply or modifying the power source.

Want to know more? Watch “Laptop Power Technologies.”

Laptop computers are the ultimate portable computing device, and their portability means that you’ll need to use many different power sources. In this video, you’ll learn about fixed input power supplies, auto-switching power supplies, and battery technologies.