u03c6 0 u00b0 the dc output voltage v dc v 1 v 2 v sine u03b8 as shown in fig5 b when v 1 v 2 with zero phase difference there are only two time sections s 1 and s 2 of waveform 54 in time section s 1 0 lt u03b8 lt 180 u00b0 and v 1 v 2 gt 0 output current passes through d 1 d 3 d 4 and d 6 and v dc v sine u03b8 in time section s 2 180 lt u03b8 lt 360 u00b0 v 1 v 2 lt 0 output current passes through d 2 d 3 d 4 and d 5 and v dc u2212 v sine u03b8 the output current is provided by both t 1 and t 2 and each transformer transmits half of the current all of the time therefore when u03c6 0 u00b0 the ladder rectifier circuit 42 is in a maximum current mode which is equivalent to the circuit depicted in fig6 a at a phase difference u03c6 180 u00b0 the dc output voltage is v dc v 1 v 2 2 v sine u03b8 as shown in fig5 f when v 1 v 2 with 180 u00b0 phase difference there are only two time sections s 1 and s 2 of waveform 54 in time section s 1 0 lt u03b8 lt 180 u00b0 v 1 gt 0 and v 2 lt 0 v dc v 1 u2212 v.