Learn about the origin of modern day electric motors. Also learn about different types of electric motors such as DC motors, stepper motors, servo motors etc. Find out about the best practices to keep the motors well maintained for optimum performance.

1. Introduction to Electric Motors

2. What is an Electric Motor?
• An electric motor is an electromagnetic
device that converts electrical energy into
mechanical energy
• The first electric motor was invented by
William Sturgeon in 1832
• The first commercially successful electric
motor was created in 1873
• Today, electric motors can be found in a
variety of appliances including industrial
fans, blowers, machine tools, house hold
appliance etc.

3. Types of Motors
 DC Motors:
An electric motor that runs on direct
current electricity is known as a DC
motor
DC motors can run directly on
rechargeable batteries making them
more portable to use
Two main types of DC motors are
Brush DC & Brushless DC motor
Brush DC motor uses and internal
powers supply with stationary
magnets, while Brushless DC motors
use rotation permanent magnet

4. Types of Motors
 Stepper Motors
A stepper motor is a brushless DC
motor that drives full rotation into
multiple steps
The motor's position can move and
hold at one of these steps without
any feedback sensor
Stepper motors are used in Floppy
disk drives, plotters, CD ROMs,
scanners and many other appliances.

5. Types of Motors
 Servo Motors
Servo motors are used in
servomechanisms.
A Servomechanism is an automatic
device that uses error sensing to
improve machine performance
Servo Motors are capable of producing
8,000 to 70,000 RPMs for high torque
requirements in special design
applications

6. Tips for Efficient Motor Operation
 Properly lubricate moving parts
 Keep motor couplings properly aligned
 Properly align tension belts while installing the motor
 Keep bearings clean and lubricated
 Check proper supply voltage