變更

'''直流电源'''

[[File:5366d0160924ab181dd99c1238fae6cd7a890bc3.jpg|缩略图 [https://bkimg.cdn.bcebos.com/pic/5366d0160924ab181dd99c1238fae6cd7a890bc3?x-bce-process=image/watermark,image_d2F0ZXIvYmFpa2UyNzI=,g_7,xp_5,yp_ 原图链接][https://bkimg.cdn.bcebos.com/pic/5366d0160924ab181dd99c1238fae6cd7a890bc3?x-bce-process=image/watermark,image_d2F0ZXIvYmFpa2UyNzI=,g_7,xp_5,yp_ 图片来源百度]]]

==定义==

直流电源有正、负两个电极，正极的电位高，负极的电位低，当两个电极与电路连通后，能够使电路两端之间维持恒定的[[电位差]]，从而在外电路中形成由正极到负极的电流。直流电源是一种[[能量转换]]装置，它把其他形式的能量转换为电能供给电路，以维持电流的[[稳恒流动]]。

[[File:908fa0ec08fa513d4871e109366d55fbb3fbd90a.png|缩略图 [https://bkimg.cdn.bcebos.com/pic/908fa0ec08fa513d4871e109366d55fbb3fbd90a?x-bce-process=image/watermark,image_d2F0ZXIvYmFpa2U5Mg==,g_7,xp_5,yp_原图链接][https://bkimg.cdn.bcebos.com/pic/908fa0ec08fa513d4871e109366d55fbb3fbd90a?x-bce-process=image/watermark,image_d2F0ZXIvYmFpa2U5Mg==,g_7,xp_5,yp_图片来源百度]]]

==基本原理==