Theoretically, the amplification factor should be 330 times. When 0.1A current flows through the sampling resistor R5, the output should be around 3.3V. Why is the output always around 4.7V when using
After the mature smart grid is built, smart meters will have the functions of automatic query and remote meter reading, and can also realize automatic power off. However, at present, domestic smart me
[i=s]This post was last edited by qwqwqw2088 on 2021-6-25 09:59[/i]The charger circuit based on the PD protocol can keep the AC/DC part unchanged, but replace the QC protocol controller with a PD cont
[i=s]This post was last edited by Xiaomeige on 2020-2-6 15:48[/i]/*Functional description:Use the audio codec chip WM8731 on the AC620 development board to complete audio acquisition, storage and play