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AC-DC模塊電源

是否可以使用直流輸入來運行AC-DC電源?

發布日期:2022-04-17 點擊率:77

濾波器而流過輸入端,并且通過二極管D1 和D3 來為電容器C1 充電。在第二個半周期(負輸入)內,電流流過中性線端流入,通過二極管D2 和D4來為電容器C1充電。

通過高壓直流電供電時,對于電源運行而言,連接的極性并不關鍵。如果在火線端連接正輸入,則C1 通過二極管D1 和D3 充電。如果在中性線端連接正輸入,則C1 通過二極管D2 和D4 來充電。

此處一個重要的注意事項與電源的保護性熔斷有關。大多數電源內部都有與輸入端串聯的交流速熔型保險絲。建議將直流保險絲安裝在電源外部。如果高壓直流母線的一端接地,則保險絲的位置通常與高電位側(未接地端)串聯。建議咨詢當地的安全工程師以確認。

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