स्विचिंग बल डेलिभर को चित्रहरु लगभग छ: सुधार --- स्विचन सर्किट मार्फत --- उच्च आवृत्ति एसी मा --- उच्च आवृत्ति ट्रान्सफर्मर मार्फत परिवर्तन --- सुधार, फिल्टरिङ --- 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.