I have been using 80C51FXX microcontrollers before, but recently I need to switch to AVR for work. However, there are many things that I don't understand, and the most frustrating thing is EEPROM. I w...
In the "Crystal Radio" column of the sub-forum of the Crystal Radio Forum, a forum member developed a high-frequency Q meter for qualitative and quantitative analysis of the characteristics of compone...
[img]http://www.dianyuan.com/upload/community/2015/09/08/1441719757-78609.jpg[/img] [table=98%] [tr][td]I used PI Expert to design a power supply. But it says "The input rectifier rated voltage is too...