I'd like to ask how to read the parameters of a field effect tube. The formula in the book is I=K(Vgs-Vt) squared, but there is no quantity K in the parameter table, only voltage, current, and power?...
I just bought a development board recently. But the eboot of the BSP uses CS8900, but the board has DM9000, so the main thing now is to change ether.c to the interface of DM9000. . I copied a driver s...
[i=s]This post was last edited by 18379433374 on 2019-3-7 10:46[/i] [size=5][color=#00bfff][b]This sharing is based on [url=https://bbs.eeworld.com.cn/type-68-79-1.html]PCB Production Experience Summa...