DC Motors

The Multiple Uses of DC Motors

DC Motors

DC Motors are arguably the most useful type of electrical motors, and with good reason, they are designed to be used with batteries, solar cells or similar cell based energy sources, and as a result are used in systems where you don't have to be tied to a wall. Furthermore, even in systems where they are tied to the wall, sometimes it can be more efficient and cost effective to run DC Motors even in certain situations. Motors generally though give the impression of a gas guzzling car. In this article, I hope to dispel that myth, and educate you on where and when DC Motors can be and are used.

Low Power DC Motors

The lower power motors aren't really useful for things commonly associated with motors. Lifting and transportation applications require more power & torque for them to work. However, what they lack in power they make up in precision. Low power DC motors are particularly useful as speed changes from 0 to 1 are almost instantaneous. Therefore, they can be used successfully in digital systems.

A low speed, low power brushless DC motor can be found in most turntable devices, particularly precision turntable devices. Devices with such motors are things like personal computers (usually, with 3 motors in it, one for the hard drive, and one for the processor cooler), CD & DVD players.

Medium Power DC Motors

Medium power DC Motors have a use too in systems. Generally they are connected to the mains, and use a rectifier to convert the AC current into a DC current to be used for the task in hand. As a result of this, they also need to be stepped down (voltage reduced) so that the current doesn't overpower the circuit and burn out the motor. This limits their usage to larger systems that require room for both a stepper and a rectifier. But they still serve a purpose, particularly in systems where size nor speed is an issue, just reliability. One such place is in pinsetters in a bowling alley, for example.

High Power DC Motors

Arguably the most common and useful motors are High Power DC Motors. These motors are generally used in open systems, and generally used in systems were torque and power, as well as drive are paramount. Examples of such systems include electric wheelchairs, electric scooters, Segways, hybrid cars, as well as in elevators.

Of course, with power comes great power usage, and whilst the most energy efficient form of motor, they can require a lot of energy to run. Part of the creative process of using them is to be efficient (drive systems in hybrid cars use the petrol motor's momentum to recharge a battery, which will be then used to power the DC motor), but generally the battery will need to be recharged or replaced at regular intervals. Even so, it's usually infrequently the battery needs replacing. Furthermore, any systems attached to the mains don't suffer from this problem. (By Andrew Roberts)

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DC Motor

Tips to Buy DC Motor For Heavy Duty Equipment

DC Motor

Time for a new electrical motor? Make your purchase based on efficiency and from brands you can trust.

Looking for a powerful but simple motor that will endure through time and high stress? Buy a DC motor for efficient results.

The need for the highest level of efficiency, reliability and durability in a motor should not be ignored. Don't be fooled...the quality of your motor makes a huge impact on the performance of your equipment. You want a motor that will ensure a constant flow of energy so your motor will function without setbacks and without fail. And with hard-wearing industrial vehicle or equipment, especially, you need a motor you can trust.

For heavy-duty industrial vehicles

This need becomes more important when dealing with high load, high usage and heavy-duty vehicles or equipment such as transport trucks, city buses, fire engines, or commercial refrigeration. Be prepared with a 12v DC motor, for instance, and reduce the possibility or frequency of expensive repairs.

Ready to buy a quality DC motor...as soon as you know which one to buy

Motor's come in a number of different categories depending on purposes. A 12v DC motor, for instance, is part of a lift gate, a hydraulic pump, a Salter, a snow plow, or a winch.

And how do I find and buy a reliable DC motor? How do I know which brands I can trust?

Finding a reliable motor is more likely to occur if you go through a reliable distributor. Signs of a reliable distributor are:

> If they have many years of experience 
> If they are representing top-quality brands 
> If they demonstrate transparency through providing thorough customer service such as an on-line  catalog or a toll free customer service number, for instance 
> If they provide a warranty or guarantee with their product

Elreg - All that and more. Search Elreg's on-line heavy duty equipment catalogs and to begin to see for yourself. Buy DC motors for your equipment with confidence and with ease. (By Joe Zundl)

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Brushless Motor

New and Improved Brushless Motor RC Cars

Brushless Motor

Brushless Motor became commercially available around the mid 1960's. Since then they have revolutionized all sorts of industrial and mechanical industries. On the RC aircraft, they made possible for electric planes, what was once possible only on planes equipped with internal combustion engines.

Brushless motors have made quite a splash in the world of RC cars and trucks. Because of their higher efficiency and power, among other things, they are quickly becoming the industry standard for electric RC vehicles. They are so powerful, in fact, that until 2006 they were actually illegal for use in officially sanctioned RC races. But how do they work?

An electric motor is essentially a rotating bar that contains an electromagnet positioned in between two stationary magnets. When the electricity is turned on, it creates a magnetic field that causes the electromagnet to spin. However, it can only spin 180 degrees before the electromagnet needs to switch polarities.

In a brushed system there are little brushes that come into contact with electrodes in order to flip the polarity of the electromagnet. So in essence, despite being an electrical system, the changing of the polarities is handled mechanically.

Brushless motors are almost the reverse of brushed motors. With a motor the electromagnet is on the stationary sides of the motor, and the magnets are on the rotor. The motor is then controlled by a computer instead of using the brushes for mechanical control.

There are many advantages to a brushless motor. A motor with brushes makes a lot of noise, is less powerful and efficient, is more prone to overheating and will wear out more quickly. In fact, these motors are just better. Basically the only disadvantage of these motors is that they are more expensive initially.

What does this mean for RC cars and trucks? First of all, it means power. Brushless motors produce more power and will make your RC car go faster. They also are more efficient and will power a vehicle longer on the same battery than a brushed motor will.

Brushless motors are more reliable for a number of reasons. There is no need to replace the brushes because there aren't any. They don't really overheat, and need less maintenance. They will last a very long time and really only the bearings need replacement. Brushed motors burn out comparatively quickly and will need to be replaced.

As stated before, the only real disadvantage to brushless motors is cost. They cost more than brushed motors initially, and they run much more efficiently on LiPo batteries. LiPo batteries are quite expensive, take longer to charge, and require a balance charger. Balance chargers can be pricey. LiPo batteries are also more dangerous as they can explode if overcharged. LiPo batteries are not necessary for these motors, but are highly recommended.

One other disadvantage to brushless motor is that they have a higher learning curve. They have to be programmed and this can be fairly difficult for beginners.

Beginners or those on a tight budget may prefer brushed motors simply for the price. Other than that, any serious electric RC hobbyist should really make the switch to a brushless system. They are the motors of the future, and one day will most likely replace all brushed motor. (By Jacob T Anderson )

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Auto Electric

The Main Parts of Auto Electric Systems

Auto Electric

There are some big differences between electric cars and fuel propelled cars. Electric cars are made up of simpler driving structures that provide automotive with the right amount of energy so you can drive on the streets for a reasonable amount of time. However, whatever electric car you may have, they are all comprised of auto electric systems essential for a safe and smooth drive.

There are three most important auto electric parts of a car. These are the motor, the controller and the battery. These must be given attention to if you own an electric car so you would know what to do in case they fail from functioning effectively or if you experience some untoward car breakdowns while on the road.

To begin with, you have to check all auto electric parts before setting out for a journey on the road or gearing up for a holiday break. This is vital to avoid unexpected car breakdowns and untoward failures in car driving.

• The electric motor is the most significant auto electric part in your vehicle. It is the component that is accountable for the driving and propelling of the mobile vehicle. The electric motor is made available in three well-known kinds. These are the permanent magnet DC, DC wound and the AC motor. The AC is the most multifaceted type of electric motor but it is the most proficient. It is more often than not employed in those vehicles that call for further power and control in order to be in motion and go up the vertical hills. Alternatively, the DC wound is the uncomplicated and the most straightforward electric motor type to put in. However, it generates less power and control than the AC one. The DC is from time to time favored for the reason that it has lower price than the others.

•   The second highly significant auto electric part is the battery. Despite the fact that a quantity of cars ought to make use of the typical car batteries as a supplier of energy, the more highly developed ones bring into play the Ni batteries since they give more efficient energy source that provides additional assortment of maneuver for the vehicle. These kinds of batteries require less time to be charged and make available more energy for the motor connected.

•   Finally, another important auto electric part is the controller. The auto controller is in charge for power running. The controller also is responsible for sensing the quantity of energy considered necessary by the motor. By then, the controller supplies this energy straightforwardly from the batteries with the intention of getting the car to be in motion and move about. The auto controller is very essential for the reason that it brings into lines the maneuver and function of both the battery and the motor.

In a nutshell, you have to be skilled in the mentioned auto electric parts so as to know what causes the breakdown of your car. It is also advised that you seek the help and assistance of highly-skilled auto electricians so that you have the professional detail regarding the auto electric problems that your car may have. ( By: Rusty Crosby )

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