Question Lab

  • Consider the circuit demonstrated in this week’s presentations. With the turns ratio modified to 20:1, calculate the following values of Vs and Is for the given values of RL in the table below:

 

 

RL

Calculated Vs

Calculated Is

Measured Vs

Measured Is

0 Ω

10 Ω

25 Ω

50 Ω

100 Ω

1000 Ω

 

  • Construct the transformer circuit in MultiSIM and complete the table in part 2 with the measured values of Vs and Is for each value of RL. Use the Agilent Digital Multi-meter to take the measurements and capture a screen shot of each measurement.

 

  • Discuss the following:

 

  • Describe the relationship of RL on the secondary voltage.

 

  • Describe the relationship of RL on the secondary current.

 

  • How do the calculated values compare to the measured values?

 

  • How would you go about calculating the transformer power efficiency?

 

  • How would you go about measuring the transformer power efficiency?

 

  • Determine the transformer power efficiency for the circuit in MultiSIM. Include a calculation and a measured value.