Advantages of Alternators over Dynamo
● For same output, the alternator is much smaller in size as compared to dynamo.
● For same current output the alternator is lighter weight.
● Alternator can produce more current output at low, engine speeds, even at idling. But dynamo can’t do that.
● Alternator requires lesser maintenance.
● It is more reliable.
● No cut-out unit is required in alternator.
● Maximum driving speed of alternator is comparatively higher (20000 rpm) than dynamo (9000 rpm).
● Alternator requires smaller size of driving pulley as compared to dynamo.