Atum

Atum makes compact, high-efficiency transformers, components that convert electrical voltage and current levels, used in consumer electronics and electric vehicles.

Its products include transformers for television power supplies, on-board chargers and DC-DC converters for electric vehicles, and related passive components such as line filters and film capacitors. Listed on KOSDAQ, Korea's tech-focused small-cap board, the company applies its own patented coil technologies, including moulded and laminated coil designs, across its transformer product range.