Newbie level 6
Hello everyone, the circuits above puzzles me a lot...
The only difference between the 2 circuits are the mirror directions, except the resisters and NMOS in black circles are set in order that that the loop of the current reference is OK.
However, the second circuit works good, while the first one has trouble with start-up. Particularly, most current in P1 flows into N1, and the whole circuit stablizes in a wrong state.
What courses this? And i wonder what can confirm a circuit not being like this ?8-O