Question 3.30: Plot the currents carried by each diode in a bridge rectifie......
Plot the currents carried by each diode in a bridge rectifier as a function of time for a sinusoidal input. Assume no smoothing capacitor is connected to the output.
Step-by-Step
From Figs. 3.38(c) and (d), we have V_{out}=-V_{in}+2V_{D,on} for V_{in}< -V_{D,on} and V_{out}=V_{in}-2V_{D,on} for V_{in} > +2V_{D,on}. In each half cycle, two of the diodes carry a current equal to V_{out}/R_{L} and the other two remain off. Thus, the diode currents appear as shown in Fig. 3.41.
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