(a) What value must R4 be changed to if we want to double I1 in the Widlar current sink of (b) How does doubling I1 affect the parameters of the input stage? (c) How does it affect the overall...

(a) What value must R4 be changed to if we want to double I1 in the Widlar current sink of (b) How does doubling I1 affect the parameters of the input stage? (c) How does it affect the overall characteristics of the op amp?

 (a) Which parameters of the 741 op amp are affected if we reduce Q17’s emitter resistance R8 from 100 V to 0 V? How is the overall gain affected? (b) Provide an intuitive justifi cation for your results.