Synchronous Ac Motors

Synchronous Ac Motors

Synchronous drives represent a modern and efficient system of power transmission. They essentially combine the advantages of mechanical components (gears & chain) and flexible components (flat & V-belts) while eliminating the inherent disadvantages of these components.

The main components of a synchronous drive are the tensile cords, the teeth, rubber backing and tooth facing. Steel was originally used as a tensile cord material. Most belts today use high modulus (low-stretch) fiberglass or aramid fiber as the tensile member. Tensile corduroy is the load bearing element of the synchronous belt. The belt teeth ar wrought of a Read the rest of this entry »

Wind Turbines

Wind Turbines

Wind turbines as we know them, have been around since 1890. In Denmark, wind power was being experimented with 5-25 kw wind powered systems. As technology changed over last decade new innovations have come forth changing how we look astatine wind powered systems. As we continue to deplete our resources, the need for alternative energy and its development ar now a necessity not just an experiment. Our main question today is how effective are wind turbines?

One of the most important factors in the efficiency of wind power is the wind. To be a valuable source Read the rest of this entry »

Wind Power

Wind Power

There ar many reasons to turn to alternative sources of energy like home wind power. One reason is for the environment. Since we ne’er have to worry about using up all the wind, or pain the earth by using it, this could help save the planet. Another reason is because of all the scares about society as we know it coming to an end, and leaving us without the option of electricity from our power company.

First there was the Y2K scare, now we have 2012 arriving and no telling how many more scares there will Read the rest of this entry »

Voice Coil Motor

Voice Coil Motor

Voice coil actuators, once used in radio have today emerged as popular options to be used in demanding applications like semiconductor equipment, defense systems and life-sustaining medical systems. They are really used in places where proportional or tight servo control is very essential. Read on to know about the various operating principles of these tools.

The voice coil actuators are nothing but the technical manifestation of the Lorentz force principle, according to which “power current carrying windings of electric conductivity is directly relative to the strength of the magnetic field and current.” In this case, the Read the rest of this entry »

Tubular Motors

Tubular Motors

You can now bring brilliant sun into the interior of your home or offices with tubular sky lites. The benefits of using natural sun light are that they reduce your utility bill and you help the environment by going green. Going Green means you’re using renewable energy sources like solar, wind, etc.

Tubular skylights work in a very basic way. The dome collects sun and the sunlight travels by way of the reflecting tubes in to the ceiling where it is spread throughout the room. This delivers natural sun light from the ceiling to the floor Read the rest of this entry »

Traction Motor

Traction Motor

Spinal Compression within the back and neck is caused by irregularities within the spinal anatomy that infringe on surrounding spinal nerves, nerve roots, or the spinal corduroy itself. The spine is made up of vertebrae, inter-vertebral disc’s, muscles, ligaments, and joints. The joints and discs are especially prone to damage as time goes by, and herniated discs, bulging discs, or bone spurs can project into your spinal canal and infringe on neural activity, which in turn can cause symptoms of numbness, weakness, tingling, and pain. Spinal Decompression Therapy focuses on cathartic tension which has developed all around spinal nerves. Read the rest of this entry »

Three Phase Induction Motors

Three Phase Induction Motors

In the previous clause in this series we saw that the most suitable motor for an electric car is a 400Hz three-phase induction motor. Operated on a fixed frequency supply this type is fundamentally a constant speed motor. To be capable to vary the speed of our car we need to vary the frequency of the supply. The speed of the motor will then be proportional to the frequency. To avoid damaging the motor the voltage of the supply should be varied in the same proportion as the frequency. The device for achieving this is called a Variable Speed Read the rest of this entry »

Torque Motors

Torque Motors

There ar two basic types of torque wrenches on the market, what are called “beam” wrenches and “micrometer” wrenches. Beam wrenches count on the built-in flexibility of any material. As torque is applied, the wrench flexes, while another(a) rod, with a pointer astatine the end, indicates torque being applied on a scale.

Micrometer wrenches are pre-set to the required torque on a vernier scale. An internal spring loaded mechanism measures the torque. When the bolt is tightened to the desired torque it “clicks.”

Of the two types of torque wrenches, the micrometer wrench Read the rest of this entry »

Three Phase Motors

Three Phase Motors

Three phase transformers are being used more and more every day by small industrial companies and farms to keep their costs low and their equipment efficient and in good shape. Three phase electricity is cheaper and more productive in industry and farming, especially in what is related to electric motors being used for dissimilar fabrication processes. It is so versatile that you can even reduce your home electric bill if your place of business is located at your home. Typically carpenters have three phase transformers installed in their place of business because they require so many dissimilar sizes of Read the rest of this entry »

Three Phase Induction Motor

Three Phase Induction Motor

In 1956 an clause appeared in an American magazine that predicted that there would be an energy crisis about 15 years from that time. They were non far out, the first energy crisis made its appearance in 1973. They forecast the eventual downfall of the internal burning engine and considered alternatives for its replacement. The electric motor, they said, would not qualify, as it was too heavy. In those days, the conventional DC traction motor was all that was available. In that respect they were right, the DC motor was too heavy to give the kind of performance required Read the rest of this entry »