In a full-wave rectifier circuit, there are two diodes that conduct current alternately during the positive and negative half-cycles of the AC input signal. Each diode conducts for only half of the input signal cycle. The conduction process works as follows:
\begin{itemize}
\item During the positive half-cycle, one diode is forward biased, allowing current to flow.
\item During the negative half-cycle, the other diode becomes forward biased and conducts current.
\end{itemize}
Thus, each diode conducts current for half the cycle of the input signal.