Note: Currently, the Huawei Hardware Engineer Manuals available online, including on this forum, are usually incomplete versions (73 pages). Please be careful when downloading. If you do not have a mo
[i=s] This post was last edited by lkl0305 on 2016-6-18 23:34 [/i] I used LCD5110 and PM value detection program to practice successfully before, and recently I want to combine them. I have been learn
The power supply can be modified. I use TI integrated chip, which is a bit expensive. 1117 is OK. I've been a little busy recently, so I'll post some of my own stuff. I made the board myself, tested i
The differences and similarities between detection circuits, filter circuits, frequency selection circuits, threshold comparison circuits, and bandpass circuitsI have been studying circuits for so lon
[size=4][b]Question[/b][/size] [size=4]How to consider electromagnetic compatibility (EMC/EMI) when designing PCB? What specific aspects should be considered? What measures should be taken? [/size]
I connected the red test lead to pin 46 (the pin that generates PWM) and the black test lead to gnd on the board, but the oscilloscope did not display a waveform and the PWM indicator light was flashi