ʻO nā kiʻi pena o ka ikaika hoʻololi i hāʻawi ʻia: hooponopono ana --- ma o ke kaapuni hoololi --- i loko o ke alapine kiʻekiʻe AC --- hoʻololi ma o ka mea hoʻololi kiʻekiʻe-frequency --- hooponopono ana, kānana --- DC. The mains strength we typically use is 50hz, and 50hz AC strength desires to be converted thru a transformer, however the low frequency results in an extended transformer winding, which makes the transformer cumbersome and calls for lots of wires. After turning into a high-frequency alternating current, a exceptionally small transformer may be used to step down, saving value and space.