Which device is primarily used to convert DC power to AC power in an aircraft?

The device primarily used to convert DC power to AC power in an aircraft is the inverter. In aviation systems, electrical power often needs to be converted between different forms to meet the operational requirements of various electronic devices and systems.

An inverter takes the direct current (DC) supplied from sources like batteries or DC generators and transforms it into alternating current (AC), which is essential for powering numerous components such as instrumentation, lighting, and other critical avionics that operate on AC power.

Understanding the role of an inverter is crucial because it enables the use of more versatile electrical components that can handle AC power, making them integral for modern aircraft systems. This conversion capability is vital for ensuring that the aircraft's electrical systems can function smoothly and reliably during all phases of flight.