4–56 For the circuit in Figure P4–56:

(a) Find vO in terms of vS and the 1-V source.

(b) Prove that the block diagram provides the same output.

(c) Redesign the circuit using only one OP AMP.

(d) Validate your design using Multisim

Transcribed Image Text:

1V+ 20 1 W 10 + vo 1 Vs+ W 10 W 1 V -10 +1 VS 5 vo FIGURE P4-56