Page 608 - Basic Electrical Engineering

(c) Current flowing through the load

Figure 7.2 AC generated in the coil causes ac to flow through the load when connection is through
brush and slip-ring arrangement

Figure 7.3 (a) a slip ring cut into two pieces with a layer of insulation between the pieces; (b) a coil
rotating in magnetic field has been connected to the load through brush and commutator arrangement

7.1.2 Nature of Load Current When Output Is Taken Through Brush and
Commutator Arrangement

Now we will consider a brush and commutator arrangement of connecting the

rotating coil to the load. When a slip ring is cut into two pieces and joined
together by putting insulation in the joints, a simple commutator assembly

with two commutator segments are produced. The coil ends are connected
permanently to the two commutator segments. The commutator is fixed on

the shaft and rotates along with the coil when the shaft is driven by the prime
mover as has been shown in Fig. 7.3.