实现0-30V 4A数控稳压， 在制作中发现；C37极性画反了！还有就是复位电路是51和AVR都兼容的，不能把四个原件都焊接上去，用什么芯片就焊接什么样的复位电路 ！-Achieve 0-30V 4A NC Regulators found in production C37 reversed polarity painting! There is a reset circuit 51 and AVR are compatible, not the four originals are w