Question

b) Assuming active region operation, determine vo in tems of v, R,RE, and the BIT parameter P 426 of 1009 What is the vake of 10) when ßRε R,? c) d) Gmpute the value ofro given that ar-3V,R,-10k and Vs-10 v RE-100ka,β-100, eDetermine the range of values of y for which the BIT operates in its active region for the parameter values given in (d). What is the corresponding range oo PROBLEM 7.19 Consider the compound three-terminal deviceormed byn FIGURE 7.90 necting two BJTs in the configuration shown in Figure 7,90. The three teminals are 402CHAPTER SEVEN THE MOSFET AMPLIFIER labeled C. 1, and E. The two Brs are identical, each with β-100. Assume that each of the BJT's operates in the active region ound BT by replacing each of labeled C', B', and E'. The two BJT's are identical, each with B 100. Assume that each of the BJTs operates in the active region. Draw the active-region equivalent circuit of the compound BJT by replacing each of the BJT's by the piecewise-linear model shown in Exercise 7.8. Clearly label the C, B', and E' teminals. b) In the configuration shown, the compound device behaves like a BJT. Determine the value of the current gain B' for this compound BJT. c) when the base current iB' > 0, determine the voltage between the Ir and E terminals.

Answer 1

This is a Darlington pair

ori