Questions: 1. Is the connection correct? 2. Is there any problem with the program? If there is any problem with the above, how can I fix it? I have never played with 51 single-chip microcomputers, so
[b]20H principle[/b] refers to the power layer being retracted 20H relative to the ground layer, which is also to suppress the edge radiation effect. Electromagnetic interference will be radiated outw
[align=left][font=微软雅黑][size=3][color=#48d1cc]What often troubles you in power supply testing? [/color][/size][/font][/align][align=left][font=微软雅黑][size=3]Switching loss? Power supply harmonics? Loop