The effect of installing it on my headphone amplifier: (The machine cannot be covered; the green PCB below is also an additional one, input switching circuit.)The board was made when the 5 yuan proofi...
Yesterday, @lb8820265, who had not appeared in the forum for a long time, was all over the screen~ He brought his "Wanli" car back to the forum. He is looking forward to friends who like it to play wi...
As shown in Figure 1, I know how to calculate RC filtering. I know the frequency of the square wave and the three RC constants reach full amplitude. The filtering effect is a bit like a dorsal fin sha...
[i=s]This post was last edited by my student number on 2020-11-14 16:54[/i]The previous post completed the introduction of hardware. This post records how to build a development environment and burn a...