V1 sine 60 Hz 10 Vrms R1 100 Ω 1:1 Figure 1: Impedance Matching Circuit R2 1Ω
Construct the circuit in Figure 1 in the Circuit JS simulator. Note that the voltage source is given in
RMS. Within Circuit JS while defining the max voltage of the voltage source include “rms” after the
number to tell Circuit JS that this is a rms value. Also note that there are additional parameters
when instantiating a transformer in Circuit JS. Leave these at the default values. Additionally,
transformers may have problems simulating in Circuit JS.
Answer the following:
1. From the simulation results, determine the power dissipated in R2 and compare to the expected value
from the previous section.
2. Change the transformer ratio (“Ratio” as a fraction when you “Edit…” the transformer component) to
the value calculated in the previous section to provide maximum power transfer in R2. Note: In
Circuit JS, Transformer Ratio = Primary/Secondary.
3. Rerun the simulation, calculate the power dissipated in R2 and compare to the expected value from
the previous section.
4. Change the transformer ratio to half the value calculated in the previous section to provide maximum
power transfer in R2. Simply divide the number inputted into Circuit JS by 2.
5. Rerun the simulation, calculate the power dissipated in R2 and comment how it compares to the
theoretical maximum power transfer
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