Reference no: EM131077415
Introduction to Electronics - PHYS2211
Assignment #2
Due date: November 4th, 2015
1. Draw the output voltage waveform for each circuit Figure 1 and include the voltage values.
Figure 1
2. A power-supply transformer has a turns ratio of 5:1. What is the secondary voltage if the primary is connected to a 120 V rms source?
3. Find the average value of each voltage in Figure 2.
Figure 2
The American University in Cairo - School of Sciences and Engineering - Department of Physics
4. Draw the output voltage waveform for the bridge rectifier in Figure 3. Notice that all the diodes are reversed from circuits shown earlier in the chapter.
Figure 3
5. A certain full-wave rectifier has a peak output voltage of 30V. A 50μF capacitor-input filter is connected to the rectifier. Calculate the peak-to-peak ripple and the dc output voltage developed across a 600? resistance.
6. What value of filter capacitor is required to produce a 1% ripple factor for a full-wave rectifier having a load resistance of 1.5k?? Assume the rectifier produces a peak output of 18V.
7. Determine the output voltage waveform for each circuit in Figure 4.
Figure 4
8. Determine the RL voltage waveform for each circuit in Figure 5.
Figure 5
The American University in Cairo - School of Sciences and Engineering - Department of Physics
9. Determine the output voltage waveform for each circuit in Figure 6.
Figure 6
10. Describe the output waveform of each circuit in Figure 7. Assume the RC time constant is much greater than the period of the input.
Figure 7
11. Repeat problem 10 with the diodes turned around. The American University in Cairo - School of Sciences and Engineering - Department of Physics
12. To what value must R be adjusted in Figure 8 to make IZ = 40 mA? Assume VZ = 12 V at 30 mA and ZZ = 30 ?.
Figure 8
13. A loaded zener regulator is shown in Figure 9. VZ = 5.1 V at IZ = 49 mA, IZK = 1 mA, ZZ = 7 ? and IZM = 70 mA. Determine the minimum and maximum permissible load currents.
Figure 9
14. Analyze the circuit in Figure 9 for percent line regulation using an input voltage from 6 V to 12 V with no load. Refer to Chapter 2, Equation 2-14 in your textbook.
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