When does a BJT conduct electricity and from where to where does it flow?
I thought a BJT is
off when the base is
low and otherwise the electricity flows from emitter to collector (pnp) or from collector to emitter (npn), right?
I have this exercise with solution for example. How can I figure out if a BJT is
For T3 it seem's to be simple: It's on when A is
high because then T3's base is
But why is T7 always
on although it's connected to ground?
How can T9 be
on although it's base is connected with T4's collector?
Seem's like I didn't understand how BJTs work overall...