Question: FIGURE shows a closed loop system with a variable gain element G in the feedback path. (a) Derive an expression for y/x (b) Show that

FIGURE shows a closed loop system with a variable gain element G in

the feedback path.

(a) Derive an expression for y/x

(b) Show that for large values of K1 and K2 the value of y/x can be varied

directly by changing the gain of the feedback element G.


* x K G K y FIG. 3

* x K G K y FIG. 3

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