DC Motor Symbols

About these DC motor symbols

A DC motor is essential in many systems. It converts electrical energy to mechanical energy. It is used in industry, commerce, and home inventions. It's important to know the symbols for DC motors and related parts. They are key for reading schematics, troubleshooting, and making connections.

DC motor diagrams use common symbols. They show the motor's direction, power input, connections, and features like speed control and load capacity. Understanding these symbols will help users install, maintain, erect, and operate DC motors safely.

These include icons: a circle with 'M' for the motor, '+' and '-' for the motor's poles, and arrows for the rotation direction. More symbols can signify speed controllers, brushes, and overload protection devices.

DC motor

The symbol for a DC motor is represented by a circle with the letter 'M' in the middle. This symbol shows the motor's position in the circuit. It also points to its function as a mechanical power supply.

Motor polarity (+ and -)

Polarity symbols indicate the positive (+) and negative (-) terminals of the motor. The correct polarity makes the motor turn properly. Reversing it changes the direction.

Motor direction

Arrows around the motor symbol show its rotation direction. Changing the polarity or control signals alters the motor's rotation.

Brushes

This symbol represents the motor's carbon brushes. These brushes provide the required current to the rotating armature. To ensure motor durability, handle the brushes carefully.

Speed controller

A potentiometer or variable resistor works as a speed controller. It refers to speed control elements. By adjusting voltage or current, the motor speed is regulated with precision.

Armature

The armature represents the windings in the motor. It is a component of the DC motor that rotates in continuous motion. The interacting electromagnetic forces produce it.

Field windings

Motor field windings, depicted by a symbol, generate the magnetic field. This crucial component powers the motor's operation. Thus, motor performance can be controlled by designing these windings properly.

Overload protection

This symbol, in a fuse or thermal relay, means the protective elements that protect the motor from overheating or excessive current.

Torque load

This symbol indicates the weight or the pressure that is exerted on the shaft of the motor. We must control the torque load. Unchecked stress can make a system sluggish or freeze.