A C Servo Motor
1.Low power output of about 0.5 W to 100 W
Efficiency is less about 5 to 20 %
Due to absence of commentator maintenance is less
Stability problems are less
No radio frequency noise
6.Compare to DC servo motor it is relatively stable and smooth operation
7.AC amplifier used have no drift
DC Motor Server
1.Deliver high power output
3.Frequent maintenance required due to commentator.
4.More problems of stability
5 Brushes produce radio frequency noise.
6.It is noisy operation
7.DC amplifier used have a drift