Ang mga painting sa pagbalhin sa kusog nga paghatud pag-ayo: pagtahi --- pinaagi sa pagbalhin sa sirkito --- ngadto sa taas nga frequency ac --- pagbag-o pinaagi sa taas nga frequency transformer --- pagtahi, kutokanan --- 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.