I may have misunderstood the Op's last question. I was assuming he was asking how AC current could flow through a capacitor and DC not flow. I assumed he meant in 'any' capacitor, not the one in his circuit. Sorry for any confusion.AC does not pass through the Re bypass capacitor.
The capacitor holds Ve at a constant voltage and hence eliminates the negative feedback.
by Aaron Carman
by Aaron Carman
by Duane Benson
by Aaron Carman