Lcr Circuit Phase Diagram. The blue vector shows v l at 90 while the gold vector represents v c at 90. Lf the circuit consists possibly only of r c or r l or l c in series find the relationship between the two elements.
This module discusses the overall effect of l c and r when connected in series and supplied by an alternating voltage. Kumar ex ies mechanical air 1. Fig 9 1 4 illustrates the phasor diagram for a lcr series circuit in which x c is greater than x l showing that when v c exceeds v l the situation illustrated in fig 9 1 3 is reversed.
The resultant reactive voltage is now given by v c v l and v s is the phasor sum of v c v l and v r.
The phase angle θ now shows that the circuit current i s leads supply voltage v s by. The phase angle θ now shows that the circuit current i s leads supply voltage v s by. This is shown in red in the diagram. Since they oppose each other diametrically the total reactive voltage is v l v c.
