Q:     Calculate the dc output voltage for the circuit indicated in the diagram.

SOLUTION:

            We will begin by solving out the circuit as if this was a positive half  wave rectifier. primary,

                                                     V₂(pk)= 48V_ac/0.707

                                                            = 67.9 V_pk

                                    And

                                                    V_L(PK) = V₂(pk) - 0.7 

                                                      V_L(PK) = 67.2V_pk       //     V₂(pk)= 67.9 V_pk

                                    At last,

                                                         V_ave = V_pk/ π= 21.39V_dc

Now we shall only change all of positive voltage values to negative voltage values.

                                                   V₂(pk) = - 67.9V_pk

                                                    V_L(pk) = - 67.2 V_pk

                                                       V_ave = - 21.39 V_dc