| 摘要 |
Disclosed is an SMPS protection circuit, which can prevent unnecessary electric power consumption that may be caused due to a light load as well as damage of the SMPS protection circuit caused by a heavy load. According to the SMPS protection circuit, a voltage lowered by the load is fed back. If the fed-back voltage corresponds to the light load, the switching frequency of an SMPS transformer is downed. If the fed-back voltage corresponds to the heavy load, the SMPS protection circuit ceases to operate.
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