Question

+12V 0. RI 34 kn a) Determine the feedback topology of the feedback amplifier shown above if the o t is taken from the collector node of Qs You must justifylexplain your answer below for full credit. [3 pts.) b) Determine the feedback topology of the feedback amplifier shown above if the output is taken from the emitter node of You must justify/explain your answer below for full credit. [3 pts.] CT For the circuit described in part (b), draw the two port model of the feedback network (like Fig. 11.14b, 119b, 11.23b, or 11.26b). Be sure to show&label all the internal components of the feedback network. Then calculate a numerical value for the feedback ratio, ?-X/X [3 pts ] d For the circuit described in part (b), neatly draw and fully label its "A Circuit" (loading effects included but without feedback.. Not its small signal equivalent circuit, but the one showing the transistors). Be sure to use a signal source appropriate to this feedback topology. [5 pls.] e Assuming that the open loop transresistance gain of your "A circuit" of part (d) equals -600 k2, calculate the input resistance with feeback (R as seen by the voltage source (including Rg) and output resistance with feedback (R For Q&Q, assume e-1 mA, B-100, and [6 pts.)

Answer 1

lok9 ac r,

(b above Cawechon G a

open bod ga、 tok上 ed bac k factor Vout a) ag Akur冫n .above. eh to