The Flying Coil is a floating electromagnetic device designed to extract energy from small free vibrations present in mechanical systems in motion. It functions like a battery, with its power dependent on the vibrations that stimulate it. The collected electrical energy is stored in lithium batteries or capacitors, making it available for use.

Typically compact in size, the Flying Coil is optimized to capture small vibrations but can also be adapted for larger systems. It activates with vibrations above 10 Hz, typical of rotating machinery, both periodic and random.

Typical applications include measurement and detection transducers used on critical machinery and large industrial plants.