For a negative cycle voltage source,
– D1 is off, D2 is on
– The equivalent circuit is shown in Figure (c)
– The voltage across the R-L load is zero.
– However, the inductor contains energy from
positive cycle. The load current still circulates
through the R-L path.
– But in contrast with the normal half wave
rectifier, the circuit in Figure (c) does not
consist of supply voltage in its loop.
– Hence the “negative part” of vo as shown in the
normal half-wave disappear.