[backcolor=rgb(250, 250, 250)][font=Arial, Helvetica, sans-serif]You can also take screenshots with Excel! You can take screenshots wherever you want, simple, fast and convenient! [/font][/backcolor] ...
Um, I can’t adjust the inverter circuit. . . .Is there something mysterious about ICL7662? I read the manual and it seems to be fine. Could it be that the new film I bought has a problem?The voltage c...
I made an etching board today, and the chip pads were placed on the bottom layer. After the product was made, I found that the chip must be placed upside down, which is very difficult to solder. But i...