Determine the power rating for the load resistor.To produce a dc output of 16 V, a peak se...

Determine the power rating for the load resistor.

To produce a dc output of 16 V, a peak secondary voltage of 16 V + 1.4 V = 17.4 V is required. The rms secondary voltage must be

Vrms(sec) = 0.707Vp(sec) = 0.707(16V + 1.4V) = 12.3 V

A standard transformer rms output voltage is 12.6 V. The transformer specification required by Multisim is

120 V:12.6 V = 9.52:1

The dc voltmeter in Figure 1(a) indicates an output voltage of 16.209 V, which is well within the 16 V±10% requirement. In part (c), the scope is AC coupled and set at 100 mV/division. You can see that the peak-to-peak ripple voltage is less than 300 mV, which is less than 480 mV, corresponding to the specified maximum ripple factor of 3%.

Figure 1