| 摘要 |
The present invention relates to a circuit for separating alternating currents and direct currents of a power supply device, which uses alternating currents and direct currents as a common terminal. When positive and negative alternating currents are input, the relay does not operate as relevant contact points of a relay are blocked, and thus SMPS signals are normally output. When positive direct voltages are input, relevant contact points of the relay are changed so as to output the input direct currents through the relay. When negative direct currents and over voltages are input, operation of the relay is prevented, thus a breakdown is prevented and stable operation is ensured. Therefore, a power supply device with high capacity can be designed. |
