Electrical Engineering: Circuit Analysis and Design, Papers of Engineering

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1. Find the equivalent impedance of the following circuit You may use Maple or a calculator to do your calculations, but show all of your steps on paper. (25 pts)

-j15 Ω -j5 Ω

j2 Ω

2. Use the following diagram for the next set of questions. You are limited to using the four tools: Voltage Divider, Current Divider, Source Transformations, and Ohm’s Law. You must show all your work to get full credit.: (25 pts)

A) Determine whether R (^) b should be maximized or minimized to minimize the amplifier loading

of the source. Provide an equation to justify your answer. (9 pts)

B) Determine whether RL should be maximized or minimized to minimize the loading of the

amplifier. Provide an equation to justify your answer. (9 pts)

C)Assuming that R (^) b = 25Ω and R (^) L =75Ω, find the gain. (7 pts)

i -

s 200 Ω R^ b

25 i in

RL

v o

i in

A

v o i s

4. Find the gain of the op-amp circuit (25 pts)

v^ v o

in

A

v o v in