Problem

The output stage in the circuit shown in Figure P11.86 is a Darlington pair emitter-follow...

The output stage in the circuit shown in Figure P11.86 is a Darlington pair emitter-follower configuration. Assume β = 120 for all npn transistors and β = 90 for all pnp transistors. Let VA7 = 60 V for Q7, VA11 = 120 V for Q11, and VA = ∞ for all other transistors. Determine the output resistance Ro.

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Solutions For Problems in Chapter 11

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