PONY Testing has CNAS and CMA qualifications, and has 3 laboratories and 10 customer service centers in Beijing, Shanghai and Shenzhen, forming an international certification network, and the test rep
Hey guys, I have a transformer with 220V input and 53V output, but I only need an adjustable DC power supply with an upper limit of 28~36V. Of course, the lower limit is... Please give me some advice
I would like to apply for a job in a telecommunications company, but I have no information to look up because the scope of my knowledge is too broad. I would like to ask for help from you all. If you
Read the file. The first time the loop reads normally, the second time, it exits the loop. My file is large, so this file only reads 512 arrays once. I saw the example of FatFS copy file, which keeps