Transistor turns off because of holes are no longer injected into the silicon by the current flowing into the base-emitter junction, resulting in the cessation of minority hole carriers. QUOTE]
may i ask, to explain this ? sorry, i don't understand this part..
and can i know the equation for feedback ? and how to calculate the gain for the amplifier based on this circuit ? cause i tried explaining that if the output at z1a is 0v, current will flow. if its 5v, current will now flow. then my teacher said its wrong. impossible that it's 0v. and he want me to calculate..
thankyou..