This article and design code were written by FPGA enthusiast Xiao Meige. Without the author's permission, this article is only allowed to be copied and reproduced on online forums, and the original au
I bought a device, which is a full-body conference microphone. After connecting to the video conferencing software, it acts as a microphone and an audio output device.
When connected to the computer v
1.N3_IN is a 0.2-1V sine wave, LM2902 amplifies it by about 20 times, but the power supply voltage is positive and negative 5V, so isn't the output waveform limited? 2.LM2902 is a common-mode amplifie