It is required to design the bias circuit of Fig. 6.60 for

Chapter 6, Problem 6.132

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It is required to design the bias circuit of Fig. 6.60 for a BJT whose nominal = 100. (a) Find the largest ratio that will guarantee IE remain within 10% of its nominal value for as low as 50 and as high as 150.(b) If the resistance ratio found in (a) is used, find an expression for the voltage that will result in a voltage drop of across RE. (c) For VCC = 5 V, find the required values of R1, R2, and RE to obtain IE = 0.5 mA and to satisfy the requirement for stability of IE in (a). (d) Find RC so that VCE = 1.5 V for equal to its nominal value. Check your design by evaluating the resulting range of IE.

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