Funny bank stories A On a certain day of a certain month of a certain year, there was a thunderstorm in some parts of Shanghai. A middle-aged man called: "I, I, I..." "Sir, don't worry, what's the pro...
Regarding the derivation of the circuit voltage transfer function T(S) = Vo(S)/Vi(S), the following picture is the circuit and the derivation result. I can't find the pattern, I only know to convert i...
With the continuous development of electronic technology, the evolution of power adapters has also encountered difficulties. For example, Moore's Law has made the host of various devices smaller and s...
[i=s]This post was last edited by wangfuchong on 2014-6-7 21:36[/i] Today I was digging and turning the soil by hand (a piece of land was divided by a ditch built by the land contractor, and it was im...
Regarding this circuit diagram, I think there are two questions. 1. The 220V comes out and passes through the d1n4148 diode to form a rectifier bridge, so why is there a node at the place shown in the...