[i=s]This post was last edited by xy598646744 on 2020-6-9 22:39[/i]I recently got an old spectrum analyzer Advantest R4131D. The frequency is accurate, but the power is inaccurate. I disassembled it t
First of all, I would like to thank EEWORLD and Digi-Key Electronics for providing me with the opportunity to be selected as a finalist, so that I can gradually realize and demonstrate my ideas. This
This is a picture of the rotor of a three-phase asynchronous motor that I sawSpeaking of the rotor, it is usually made of 45 carbon steel (carbon-iron alloy) with slots and aluminum bars. My question
I received the board, but encountered a problem: I followed the instructions and the APP could not find the board at the step of " Firmware update and then connect " ! The firmware update was shown to