A power converter is an electrical device that changes the form of electrical energy from one type to another. For example, it can convert alternating current (AC) to direct current (DC) or change the voltage level of electricity. This is essential for powering various electronic devices that require specific voltage and current types. Power converters are commonly used in many applications, including renewable energy systems, electric vehicles, and consumer electronics. They help ensure that devices receive the correct power supply, improving efficiency and performance while protecting sensitive components from damage.