Sketch the waveforms for the load current and voltage for Figure 2–73. Show the peak values.
Consider the circuit in Figure 2–75.
To what value must R be adjusted in Figure 2–79 to make IZ = 40 mA? Assume that VZ = 12 V at 30 mA and ZZ = 30Ω.
Assume the output of a zener regulator circuit drops from 8.0 V with no load to 7.8 V with a 500Ω load. What is the percent load regulation?
Each part of Figure 2–84 shows oscilloscope displays of rectifier output voltages. In each case, determine whether or not the rectifier is functioning properly and, if it is not, what is (are) the most likely failure(s). Assume all displays are set for the same time per division.
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