Brushed DC motors have been in commercial use since 1886.

Within a few years DC motors were used in electric street railways.

The DC motor mounts down and used as a hand grip.

What is the working principle of a DC motor?

Speed control of early DC motors limited their use.

Several types of DC motors are described in the electric motor article.

As the DC motor starts to turn, the magnetic fields inside start to join together.

This provides the fundamental mechanism of speed regulation in a DC motor.

They are an example of the simple brushed DC motor, with a commutator.

The DC motor drives the load equipment at an adjustable speed.

Traditional field-wound DC motors were and still are used.

A standard cooling fan is essentially a bladed DC motor.

A DC motor does not move in fixed increments.

Overheating might be an issue for coreless DC motor designs.

However, due to their large inertia, DC motors cannot quickly start or stop, and are therefore difficult to control with precision.

This was the earliest ancestor of modern DC motor.

A very low powered DC motor attached to one of the "windmill" fans is a good example.

A DC motor is usually supplied through slip ring commutator as described above.

The following graphics illustrate a simple, two-pole, brushed, DC motor.

Earlier Underground stock, like most electric trains until the 1990s, used DC motors.

A part of its brushless dc motor programm is available as flat motors for use in small spaces.

Others, such as small DC motors used in robots and models, need very little voltage or current to perform efficiently.

The main part of the set up is the winding motor which is driven by the dc motor.

Today many boats use lightweight permanent magnet DC motors.