I built a LCD VGH/VGL voltage circuit using RT9293B. The circuit diagram is as followsThe TFT_VGH output is normal, about 10.45V, but the TFT_VGL is only about -2.5V. The upper end of capacitor C1 is
The small signal from the sensor is only about 20mv. After being processed by some op amp circuits, it becomes a signal that can be processed by the microcontroller. I use a differential op amp in the
[align=left][color=rgb(51, 51, 51)][font="]Today, the editor has summarized the basic common sense of module power supply. Please listen carefully! [/font][/color][/align][align=left][color=rgb(51, 51