REET 420 Full Course DeVry

1. Calculate the average value of a half-wave rectified sine wave with f = 60 Hz and V_p = 170 V_p.
2. Verify the value with a simulation, as shown in Figure 1 below.
   

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3. Does the calculated value equal the simulation value? Why or why not?
4. Calculate the rms value of a half-wave rectified sine wave with f = 60 Hz and V_p = 170 V_p.
5. Verify the value with a simulation, as shown in Figure 1. This time, set the meter to read ac.
6. Does the calculated value equal the simulation value? Why or why not?

1. Calculate the rms value of a rectangular wave with the following parameters: frequency = 100 kHz, duty cycle = 35%, and V_p = 15 V.
2. Verify the value using Multisim and the simple circuit shown below.
3. Is the ac value the same as the one you calculated? Why or why not?

1. 1. Calculate the average power delivered from a 240 Vrms half-sine-wave voltage to a 51 Ω resistor.
   2. Verify the value using Multisim and the simple circuit shown below.

3. Is the power value the same as the one you calculated? Why or why not?

1. Discuss the difference between the average and the rms values and how they are calculated.
2. Discuss the difference between the instantaneous power and the average power and how they are each calculated.

REET 420 Week 1 Assignment

1. When modeling the Class A, common-drain amplifier, the capacitors and the dc voltage supply are replaced with shorts. Using the circuit in the figure below, verify the dc and ac performance of the amplifier.
2. Using the oscilloscope function, determine how large the output can be before it begins to distort.
3. Calculate the power required by the supply and the power delivered to the load. (Show all work for full credit.)

1. Given the circuit shown in the figure below, verify that the transistor is biased at I_D = 0 A_dc.
2. Calculate the gate voltage, v_g, when V1 = 40 V_p.
3. Simulate the circuit to verify your results, and include figures of the voltage and the current readings in your report.
4. Show the graph of the voltage across the output resistor R3.
5. Calculate the power dissipated by the load when V1 = 40 V_p.

1. Design an inverting amplifier to meet the following requirements.e_in = +4 dBu at audio frequencies40 W to a 5 Ω loadinput impedance 4.9 k ΩT_A = 40° C and T_{j max} = 140° Cpower supplies: ±18V_dc and ±28V_dc, each at 6 A_dc

   Show all work. Enter the finished schematic in Multisim for full credit.

1. Carefully explain how to properly configure a Class A amplifier to produce very little distortion.
2. Explain the common ways to protect your amplifier design from catastrophic failure.

1. For the bipolar transistor shown in the circuit below, V_CE(sat) = 0.8V and β = 20. Calculate I_C, P_load, P_Q, and I_base.
2. Enter the circuit into Multisim, show the output waveform, and verify the numbers with calculated one.
3. Show the graph of V_CE versus V_base.

1. Use the circuit below to investigate the speed of an n-channel enhancement mode MOSFET in response to an input of 100 kHz, 50% duty cycle, and 5 V_p.
2. Adjust the oscilloscope controls and the cursors to measure t_storage, t_rise, t_delay, and t_fall. Include the graph with explanations in your report.

1. For the circuit below, determine the voltage at each of the nodes when e_in = 2.6 V_p.
2. When e_in is at 30 kHz and 80% duty cycle, calculate P_load, P_Q, and Θ_SA (T_{J max} = 140° C and T_A = 50°C with a mica wafer).
3. Confirm steps 1 and 2 by simulation. Include the graphs of the node voltages in your report.
4. Explain any differences in your calculated and simulated results.

1. Compare the pros and cons of linear versus switching regulator circuits.
2. Explain fully the concepts of t_storage, t_rise, t_delay, and t_fall in switching converter circuits.