I am going to open a topic about C8051F digital hygrometer to facilitate discussion and learning. I will record and share my development progress and results with you at any time. I hope you can brain
This is the circuit diagram of TL431 outputting 2.5V, but when I used it, I measured that the output of TL431 was 2.481V with an accuracy of 1%. How should the resistor R1 in this circuit be selected?