2.6: Exercises

(Assume diodes are silicon unless stated otherwise)

3.6.1: Analysis Problems

1. For the circuit of Figure $\PageIndex{1}$, determine the peak output voltage. $V_{sec} = 12$ volts RMS, $R_{load} = 50$ $\Omega$, $C_1 = 1500$ $\mu$F.

Figure $\PageIndex{1}$

2. Sketch the output voltage waveform for the circuit of Problem 1, Figure $\PageIndex{1}$, with and without the capacitor.

3. Determine the peak output voltage for the circuit of Figure $\PageIndex{2}$. $V_{sec} = 18$ volts RMS, $R_{load} = 75$ $\Omega$, $C_1 = 470$ $\mu$F.

Figure $\PageIndex{2}$

4. Sketch the output voltage waveform for the circuit of Problem 3, Figure $\PageIndex{2}$, with and without the capacitor.

5. For the circuit of Figure $\PageIndex{3}$, determine the peak output voltage. $V_{sec} = 18$ volts RMS, $R_{load} = 40$ $\Omega$, $C_1 = 1000$ $\mu$F.

Figure $\PageIndex{3}$

6. Sketch the output voltage waveform for the circuit of Problem 5, Figure $\PageIndex{3}$, with and without the capacitor.

7. Determine the output voltage waveform and its amplitude for the circuit of Figure $\PageIndex{4}$. $V_{in} = 10 \sin 2\pi 100t$, $V_{clip} = 8$ volts, $R = 10$ k$\Omega$.

Figure $\PageIndex{4}$

8. Draw the output waveform with its amplitudes for the circuit of Figure $\PageIndex{5}$. $V_{in} = 10 \sin 2\pi 100t$, $V_{clip} = 5$ volts, $R = 10$ k$\Omega$.

Figure $\PageIndex{5}$

9. Draw the output waveform with its amplitudes for the circuit of Figure $\PageIndex{6}$. $V_{in} = 12 \sin 2\pi 200t$, $V_1 = 6$ volts, $V_2 = 4$ volts, $R = 10$ k$\Omega$.

Figure $\PageIndex{6}$

10. Draw the output waveform with its amplitudes for the circuit of Figure $\PageIndex{7}$. $V_{in} = 5 \sin 2\pi 2000t$, $C = 10$ $\mu$F, $R = 4.7$ k$\Omega$.

Figure $\PageIndex{7}$

11. Draw the output waveform with its amplitudes for the circuit of Figure $\PageIndex{8}$. $V_{in} = 8 \sin 2\pi 500t$, $V_{clamp} = 2$ volts, $C = 4.7$ $\mu$F, $R = 33$ k$\Omega$.

Figure $\PageIndex{8}$

3.6.2: Design Problems

12. Design a 15 volt AC to DC power supply capable of drawing 200 mA.

13. Design a circuit that will limit its output voltage to a range of −5 volts to +10 volts.

14. Design a circuit that will shift its output voltage so that it is always positive. The input frequency is 2 kHz.

3.6.3: Challenge Problems

15. Design a circuit that will shift its output voltage so that its negative peak is at +3 volts. The input frequency range is from 100 Hz to 1 kHz.

3.6.4: Computer Simulation Problems

16. Run a transient analysis of the circuit in Figure $\PageIndex{1}$, Problem 1.

17. Run a transient analysis of the circuit in Figure $\PageIndex{2}$, Problem 3.

18. Run a transient analysis of the circuit in Figure $\PageIndex{3}$, Problem 5.

19. Run two transient analyses on the clamper circuit of Example 3.4.1, first using a capacitor 100 times larger than specified, and second using a capacitor 100 times smaller than specified. Discuss the resulting waveforms.