Whatnbspis the expression for betaz - if agnbsp 5 times


Consider the circuit in given figure. The input resistance of the op-amp is Ri = ∞ and the output resistance is Ro = 0. The op-amp has a finite gain, so that  = Agvε . The current gain of the transistor is hFE. (a) Write the closed-loop transfer function in the form

where Ag is the open-loop gain of the system.

(b) What is the expression for βz?

(c) If Ag = 5 × 105 mS and Ag f = 10 mS, what is the required βz and RE?

(d) If Ag increases by 10 percent, what is the corresponding percent change in Agf?

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Electrical Engineering: Whatnbspis the expression for betaz - if agnbsp 5 times
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