Chapter 3, Problem 3.103IP

Design Interface Competition

The output of a transistorized power supply is modeled by the Norton equivalent circuit shown in Figure P3-103. Two teams are competing to design the interface circuit so that $25\text{mW}\pm \text{10\%}$ is delivered to the $1\text{-kΩ}$ load resistor. Their designs are shown in Figure P3-103. Which solution is better considering the use of standard values, number of parts, and power required by the source? Would your choice be different if the power had to be within $\pm 5\%?$