How do I connect two DC power supplies in series?

common problems 3700

串联两个直流电源需要将第一个电源的正极连接到第二个电源的负极, 形成“菊花链”连接,串联电压为两个电源的电压之和。

串联两个直流电源的步骤如下:

  1. 关闭两个电源并从墙上拔下它们的插头,确保安全操作。
  2. 找到每个电源的正极和负极。 正极通常标记为 + 号或英文字母 VCC,负极通常标记为 - 号或 GND。
  3. 用电线将第一个电源的正极连接到第二个电源的负极。
  4. 将负载(需要上电的器件)连接到第二个电源的正极和第一个电源的负极之间。
  5. 重新插上两个电源的插头并开启电源。

请注意,负载的电压应当等于或高于两个电源的电压之和,以防损坏负载或电源。 此外,负载的额定电流应当等于或低于两个电源的最低额定电流。

只能使用同一产品系列中额定输出电流相同的电源。 如果选择的电源额定电流不一致,那么最大负载电流不得超过最小额定输出电流。

此外,连接之前必须检查电源的极性,因为电源极性一旦接反,就会导致电源或连接的器件受损。

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