A DC motor is an electrical device that moves an object by using an electromagnetic force. Its workings are based on the movement of electrons in a magnet from the negative terminal to the positive terminal. These electrons flow through a wire to create an electric current and a magnetic field. A 12-volt DC motor can be made with a set of components found in a home.

To begin, the neodymium magnet should be placed in the center of a 12-volt battery. The armature should then be placed in the loops of the paper clips, with the shiny side of the armature touching the magnet. The motor should then be spun in both directions. Next, the battery terminals should be attached securely. Lastly, the insulated wire should be bundled in a bundle with the opposite ends facing each other.

A small headless DC motor is also easy to make. The main advantage of this type of motor is that it is cheap and easy to use. The operating voltage of a hobby DC motor is from 4.5V to 12V. It can also be reversed, so it is possible to use different voltage levels with a single motor. It can be used for many hobby projects, and they are easy to work with.

How to Make a DC Motor Using Your DIY Tools


To understand how to make a DC motor, you need to know what components it consists of. This article will introduce you to the DC motor’s Magnet, Commutator, Brushes, and Flywheel. Once you understand these components, you’ll be ready to build your motor. Using your DIY tools, you can build a DC motor for your project in a matter of hours.


The magnetic field around a permanent magnet is a powerful force. If a magnet is placed within this magnetic field, then objects in its path will be drawn toward it. The magnetic field itself is created by the interactions between the magnet’s electrons, which are positively and negatively charged. The interplay of the two magnetic fields produces torque, which turns the armature. Using the Applet, you can create a rotating coil by reversing the direction of the current.

DC motors have two terminals: positive and negative. The positive terminal connects to the positive side of the coil, and the negative side connects to the negative. The positive and negative wires are connected to the brushes on the back cover. The coil is suspended above the positive and negative terminals, and the small magnet is placed centered underneath it. The motor should spin in one direction but will stop when pushed in the opposite direction.

A permanent magnet, such as a neodymium magnet, is more powerful than a temporary magnet. A permanent magnet will always have two poles, and this means that it can’t lose its force. A DC motor’s armature should spin rapidly but not too quickly. When the motor has a constant speed, it will not lose force, even when it is exposed to magnetic fields.


The commutator in a DC motor controls the torque generated by the rotor. The commutator is an electric device that focuses on the flow of current to one specific coil, either side a or side b. As the rotor rotates, the positive current on side a causes a torque of counterclockwise motion. As the current inside it moves in the opposite direction, a negative torque is produced.

A commutator is composed of a set of copper segments fixed around a part of the circumference of the rotating machine. These segments are insulated from one another, and electrical brushes are fixed to them. The brushes are then placed against the surface of the commutator, which acts as a rotary switch that reverses the magnetic field in the DC motor. This changes the flow of current in the motor from alternating current to direct current.

There are two main types of commutators. Disposable commutators are typically used for small electric motors and are not repairable. However, industrial commutators are designed for replacement if they become damaged. Large industrial commutators can contain hundreds of segments. A commutator is generally insulated with a conductive material in order to prevent electrical contact from occurring between adjacent segments. Mica was used in early machines, but many other insulating materials are now used.


The basic concept behind a DC motor is a simple one: a rotating part with a set of brushes in its center. These brushes carry the current through the system, which transfers it from the rotor to the brushes on the armature. The motor’s armature is made up of two parallel strands of iron, one for each pole. This configuration allows the brushes to bridge adjacent commutator segments without short-circuiting.

An AC motor uses an external current switching device to change polarity. In a DC motor, the two magnets are attached to each other by a mechanical connector, called a commutator. These brushes slide over the commutator segments and supply the windings with current. The brushes and the permanent magnet on the armature to create a magnetic field. The voltage across the brushes reverses the polarity of the electromagnets, causing the armature to rotate in one direction and the opposite direction.

To make a DC motor with brushes, you will first need to make the commutator. This is the mechanical component that closes and opens the motor’s switch. As the motor turns, significant current flows through the rotor windings, resulting in arcing at the brushes, which generates a lot of electrical noise. To reduce electrical noise, you can add capacitors or RC snubbers across the brushes. However, even with these precautions, the instantaneous switching of the commutator will generate some electrical noise.


A series DC motor with a large flywheel is a great way to test the effect of back EMF on a motor. These motors have a special connection between the armature coil and the flywheel. When power is applied to the motor, a 300-watt bulb glows brightly. When the power is removed, the 15-watt bulb dims and eventually stops glowing. The resulting back EMF is a good indication of the efficiency of the DC motor.

When selecting a flywheel, you should look for a design that uses a large circular flywheel. This type is generally easier to balance because the moment of inertia of the flywheel is the same as its radius squared. A flat belt, such as that used in a Hoover upright vacuum cleaner, can take a beating. The flywheel, or flywheels, rotate at a certain RPM.

Besides supplying a constant amount of energy to a DC motor, a flywheel can also be used to supply intermittent pulses of energy. Its mechanism allows it to accumulate energy over time and release it at a higher rate when it is needed. This type of flywheel is also used in power hammers and riveting machines. If you want to get more information about flywheels, read on! You can buy a flywheel for a DC motor from a local distributor or a reputable retailer.


In this article, we’ll cover the basics of how to make a DC motor using a transistor. This circuit will require a LaunchPad with a 5V pin. We’ll also discuss the use of an Arduino or a PIC microcontroller to control the speed of the motor. To build the circuit, you’ll need these components and some external power. Next, we’ll discuss how to control the speed of the motor using a PWM technique.

The most basic way to turn the motor on and off is by connecting a red wire to the 5V bus. This red wire will connect to a 1K resistor and will turn the motor on. To make the circuit more convenient, you can install a pushbutton in place of the wire. Alternatively, you can install a small switch that turns the motor on and off. Once the switch is inserted in the circuit, you’ll be ready to use the motor.

This circuit also allows you to control the speed of the motor by controlling the pulse duration. You can use a circuit with a fixed output pulse duration that feeds the motor with low power. If you want to control the speed of the motor by changing the pulse frequency, you can use a circuit with a variable frequency. But remember, you must choose a voltage source with a low frequency and make sure that it supports the motor you’re building.

Power supply

When building your own DC motor, one of the most important aspects of the project is the power supply. You can provide your DC motor with a line voltage or an electronic drive to generate a pulse wave form that resembles the battery voltage. NEMA forms are standards for power supplies and are based on quality and cost. Other considerations include the size of the motor, the operating and drive costs, and the output power quality.

A regulated power supply will be able to handle a reasonable range of changes in the AC line voltage, while an unregulated power source will change output proportionately to the AC line voltage. If your AC line changes from 115 VAC to 104 VAC, the DC output from the bulk linear supply would be down 10 percent, and a machine that needs full output may not work well under such conditions. Therefore, before purchasing a DC power supply, be sure to check the polarity of the plug before purchasing.

If you are building a motor for home use, it will need a power supply capable of supporting the motor. Using a 12V power supply will allow you to operate a 6-V motor at 50% of its full output. If you need a higher power supply to operate a larger motor, you can use two 12-V motors mechanically coupled to a single load. However, you should make sure to limit the duty cycle of each motor to 50% to prevent damage from occurring.