In actual circuits, the magnetic field strength is generated by the excitation current passing through the primary coil of the transformer. The so-called excitation current is the current that magneti...
[i=s]This post was last edited by ylyfxzsx on 2019-5-20 12:21[/i] Recently, a Japanese-made Deshi power supply (formerly Kenwood power supply) that has been in use has failed and reported the error AD...
I was quite interested in M7 before, but after getting it, I felt that it was not much more advanced than stm32F429, except for the higher main frequency and QSPI, which seemed to be the only feature....
[i=s]This post was last edited by flashtt on 2015-6-12 19:51[/i] I use 51 MCU to drive stepper motor through ULN2803. The stepper motor only vibrates. When I apply force with my hand, it will rotate. ...
Our company is engaged in chips, and I am a newcomer. I am not very familiar with these chips. I want to learn, but I don't know where to start. Please recommend some good books for me to learn, prefe...
I have a USB printer. There is only one "XX Inc. Color Printer." under "Universal Serial Bus Controllers". This device is not found under other nodes. What kind of USB device does this device belong t...