Figure 13–11 shows a block diagram of a dc power supply. The ac input is a sinusoid that is converted in to a full-wave sine by the rectifier. The filter passes the dc component in the rectified sine and suppresses the ac components. The result is an output consisting of a small residual ac ripple riding on top of a much larger dc signal.

Calculate and plot the first 10 harmonics in amplitude spectra of the filter input and output for VA =23:6V,T0 =1=60s and a low-pass filter transfer function of

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ac VA Rectifier ac Input FIGURE 13-11 VS Vo vo -To- To- Filter dc Output 1