| 摘要 |
A primary circuit turns on switching elements and generates energy from a direct-current power supply to a secondary circuit through a transformer. The secondary circuit charges a driven element using the energy obtained from the primary circuit through the transformer, turns on a switching element, discharges the energy accumulated in the driven element, and generates the energy in the primary circuit through the transformer. The primary circuit returns the energy obtained from the secondary circuit to the direct-current power supply.
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