Q:     Calculate the dc load voltage for the circuit shown in the diagram.

SOLUTION:

Primary voltage is in rms so we might calculate the peak voltage

                                                             V₁(pk) = V_rms/0.707

                                                                                    = 75/0.707= 106.08V_pk

Primary voltage & turn ratio is known so we might find the secondary voltage

                                       V₂(pk) =(N₂/N₁)V₁pk=1/4(106.08) =26.52V_pk

Now load voltage might be determined as

                                        V_L(pk) = V₂/2 - 0.7= 26.52/2 -0.7= 11.86V_pk

Now dc value of the voltage could be determined as

                                                V_ave = 2V_L(pk)/ Π

                                                                     = 0.636V_L(pk) = 0.636(11.86) = 9.54 V_dc