Plain English Meaning

A box that turns the steady DC electricity from the airplane's battery into the kind of alternating electricity that some instruments need to run.

Full Definition

An electrical device that converts direct current (DC) into alternating current (AC) for instruments and equipment that require AC power. In a turboprop airplane, the inverter takes DC from the battery or generator bus and produces the AC voltage and frequency needed by certain avionics, gyroscopic instruments, and other AC-powered systems.

Context Anchor

Seen in aircraft electrical system discussions, especially where a battery or - must supply equipment that needs alternating current.