We had a good teacher and he really did teach us to do most of the
work in our heads. Maybe he was able to give us all that 'intuitive'
feel that it took to do it fast. I can't do it anymore though. I
really haven't needed to do transistor circuit analysis in a long
time. The last time I used DPI was to nomalized a thermistor circuit
for a lead acid battery charger.
Do you remember the name or author of the text that you used? We
only had a series of notes from the instructor.
There is a method called Driving Point Impedance Analysis that
makes
AC analysis easier. Most of the analysis can be done in your
head.
Whoa! Its easy, but not that easy! :-) This is the method we
used to follow in school.
Rama