1
vote
2answers
87 views

DC Voltage Grounded with AC Input

This is an image from a book showing us how to solve BJT circuits via AC analysis: So I understand that when doing AC analysis to ground all the DC voltage sources but I don't understand why. Can ...
3
votes
2answers
2k views

What is the formal definition of Quiescent Point?

What is Quiescent Point? Is it necessary for it to be related with any V vs I , I vs I, or any such characteristic curves intersection point?