Fisher-Price

Since 1979, Fisher Price has voluntarily recalled 27 of its products due to present or potential hazards. In areas where the power frequency is 60 Hz (United States), generators rotate at 1800 rpm or another even multiple of 60. In 1997, after Mattel acquired the Tyco Toys brand, Mattel decided it would market all of its infant and preschool products under the Fisher-Price name. This produces power at 50 Hz, which is the frequency used in the UK. In 1991, Fisher-Price became independent from Quaker, and in 1993, it merged with Mattel. These diesel engines are run in the UK on red diesel and rotate at 1500 rpm. During the 1970s, Little People expanded to include Sesame Street characters on its line, and also the Sesame Street buildings. Stationary generators used in the US are used in size up to 2800 kW.

In 1969, Quaker Oats Company bought Fisher-Price. It's powered by a 6.7 litre turbocharged Perkins Phaser 1000 Series engine, and consumes approximately 27 litres of fuel an hour, on a 400 litre tank. The Little People toys gained much popularity and quickly replaced the wooden dogs on Fisher-Price's production line. The mid-size stationary engine-generator pictured here is a 100 kVA set which produces 415 V at around 100 A per phase. hitting the markets. Trailer-mounted generators can be towed to disaster areas where grid power has been temporarily disrupted. During the 1960s, Fisher-Price began to produce their famous "Little People" line, with items such as schoolbuses, farms, etc. Small and medium generators are especially popular in third world countries to supplement grid power, which is often unreliable.

That tradition continued on for the next four decades. Hospitals, communications service installations, sewerage pumping stations and many other important facilities are equipped with standby power generators. Fisher-Price was basically dedicated to the making of wooden toy dogs at that time. Standby power generators are permanently installed and kept ready to supply power to critical loads during temporary interruptions of the utility power supply. In 1930, the three founders went to the International Toy Fair in New York City, bringing 16 toys with them. for traveling carnivals. Fisher-Price is named after two of the company's three founders, Herman Fisher and Irving Price (the third, Helen Schelle, is unmentioned). Trailer-mounted generators supply power for lighting, amusement rides etc.

Fisher-Price also had, during the 1970s and 1980s, a series of full bodied action figures, and currently have a popular line of action figures based on rescue service personnel. Small generators are sometimes used to supply power tools at construction sites. The figures, which were once armless and legless but are now molded with more detail, have holes in the bottom allowing them to be used as finger puppets. Engine-generators are often used to supply electrical power in places where utility power is not available and in situations where power is needed only temporarily. One of the better-known lines of Fisher-Price is their Little People toys, which include various sets of buildings and vehicles with their respective "people" figures, which used to be made of wood and metal but are now made of plastic. The smaller units tend to use gasoline (petrol) as a fuel, and the larger ones have various fuel types, including diesel, natural gas and propane (liquid or gas). The company is a division of Mattel. These include small, hand-portable units that can supply several hundred watts of power, hand-cart mounted units, as pictured above, that can supply several thousand watts and stationary or trailer-mounted units that can supply over a million watts.

Fisher-Price is a well-known brand of toys, with headquarters located in East Aurora, New York. Engine-generators are available in a wide range of power ratings. Both single-phase and three-phase models are available. The generator voltage (volts), frequency (Hz) and power (watts) ratings are selected to suit the load that will be connected. Engine-generators produce alternating current power that is used as a substitute for the power that might otherwise be purchased from a utility power station.

Standby power generating units often include an automatic starting system and a transfer switch to disconnect the load from the utility power source and connect it to the generator. Many units are equipped with a battery and electric starter. In addition to the engine and generator, engine-generators generally include a fuel tank, an engine speed regulator and a generator voltage regulator. In many contexts, the engine is taken for granted and the combined unit is simply called a generator.

This combination is also called an engine-generator set or a genset. An engine-generator is the combination of an electrical generator and an engine mounted together to form a single piece of equipment. A small propellor, wind turbine or impeller is connected to a low-power alternator and rectifier to supply currents of up to 10 A at typical cruising speeds. Sailing yachts may use a water or wind powered generator to trickle-charge the batteries.

Aircraft have also switched from DC generators to alternators; these are typically powered by a takeoff from an engine. A battery would be required in order to use a controllable electromagnetic field instead, and this is unacceptable due to its weight and bulk. Nevertheless, the maximum efficiency is only around 60% for the best generators - 40% is more typical - due to the use of permanent magnets. Being powered by the rider, efficiency is at a premium, so these may incorporate rare-earth magnets and be designed and manufactured with great precision.

These tend to be 0.5 A permanent-magnet alternators, supplying 3-6 W at 6 V or 12 V. Some of the smallest generators commonly found are used to power bicycle lights. Vehicle alternators do not use permanent magnets; they can achieve efficiencies of up to 90% over a wide speed range by control of the field voltage. Commercial vehicles are more likely to use 24 V to give sufficient torque at the starter motor to turn over a large diesel engine.

Rated output will typically be in the range 50-100 A at 12 V, depending on the forecast electrical load within the vehicle - some cars now have electrically powered superchargers and airconditioning, which places a high load on the electrical system. These power the electrical systems on the vehicle and recharge the battery after starting. These were not particularly reliable or efficient and have now been replaced by alternators with inbuilt rectifier circuits. Early motor vehicles tended to use DC generators with regulators.

For this reason, practical generators are not usually designed to operate at maximum power output, but at a lower power output where efficiency is greater. However, under this condition the power transfer efficiency is only 50%, which means that half the power generated is wasted as heat inside the generator. This theorem states that the maximum power can be obtained from the generator by making the resistance of the load equal to that of the generator. The maximum power theorem applies to generators as it does to any source of electrical energy.

Note 2: If the generator is an AC type (distinctly not a dynamo), use an AC voltmeter for the voltage measurements. For rough calculations, you can omit the measurement of R_GAC and assume that R_GAC and R_GDC are equal. The above procedure allows you to measure both values. Note 1: The AC internal resistance of the generator when running is generally slightly higher than its DC resistance when idle.

To determine the generator's V_G and R_G parameters, follow this procedure: -. The equivalent circuit of a generator and load is shown in the diagram to the right. The generator rotor is turned by a device termed a prime mover, often a Diesel engine, steam turbine, water turbine or gas turbine coupled to the rotor shaft. Also, all common types of electric motors could work as generators.

The construction of a dynamo is similar to that of an electric motor, and all common types of dynamos could work as motors. Other types of electrical generator exist, based on other electrical phenomena such as piezoelectricity, and magnetohydrodynamics. It is somewhat analogous to a water pump, which creates a flow of water but does not create the water itself. The generator creates an electric current, but does not create electric charge, which is already present in the conductive wire of its windings.

Various versions and improvements have been made since then, but the basic concept of a spinning endless loop of wire remains at the heart of all modern dynamos. His design is now known as the Gramme dynamo. Zénobe Gramme reinvented this design a few years later when designing the first commercial power plants, which operated in Paris in the 1870s. This meant that some part of the coil was continually passing by the magnets, smoothing out the current.

Antonio Pacinotti, an Italian scientist, fixed this by replacing the spinning coil with a toroidal one, which he created by wrapping an iron ring. Both of these designs suffered from a similar problem: they induced "spikes" of current followed by none at all. By adding a commutator, Pixii was able to convert the alternating current to direct current. Furthermore, the north and south poles of the magnet induced currents in opposite directions.

Pixii found that the spinning magnet produced a pulse of current in the wire each time a pole passed the coil. The spinning magnet was positioned so that its north and south poles passed by a piece of iron wrapped with wire. It used a permanent magnet which was rotated by a crank. The first dynamo based on Faraday's principles was built in 1832 by Hippolyte Pixii, a French instrument maker.

The dynamo uses electromagnetic principles to convert mechanical rotation into an alternating electric current. The dynamo was the first electrical generator capable of delivering power for industry, and is still the most important generator in use in the 21st century. It produced a small direct current. He also built the first electromagnetic generator called the Faraday disc, a type of homopolar generator, using a copper disc rotating between the poles of a horseshoe magnet.

In 1831-1832 Michael Faraday discovered that a potential difference is generated between the ends of an electrical conductor that moves perpendicular to a magnetic field. Electrostatic generators are inefficient and are useful only for scientific experiments requiring high voltages. The Van de Graaff generator uses either of two mechanisms:. The Wimshurst machine used electrostatic induction or "influence".

Before the connection between magnetism and electricity was discovered, generators used electrostatic principles. . The process is known as electricity generation. An electrical generator is a device that produces electrical energy from a mechanical energy source.

Generator Facts. Electus Distribution Reference Data Sheet: Impedance Matching Primer (PDF). Patent 447921 -- Alternating Electric Current Generator - Tesla's generator that produces alterations of 15000 per second or more. U.S.

Patent 447920 -- Method of Operating Arc-Lamps - Tesla's alternating current generator of high frequency alternations (or pulsations) above the auditory level. U.S. (Related to patents numbers US327797, US292077, and GB9013.). Patent 417794 -- Armature for Electric Machines -Tesla's construction principles of the armature for electrical generators and motors.

U.S. Patent 406968 -- Dynamo Electric Machine - Tesla's "Unipolar" machine (i.e., a disk or cylindrical conductor is mounted in between magnetic poles adapted to produce a uniform magnetic field). U.S. Patent 359748 -- Dynamo Electric Machine - Nikola Tesla's construction of the alternating current induction motor / generator.

U.S. Patent 373,584 -- Dynamo-Electric Machine : Edison's improved dynamo which includes an extra coil and ultilizes a field of force. U.S. It is inefficient.

This device has large bipolar magnets. The device's nickname was the "long-legged Mary-Ann". Patent 222,881 -- Magneto-Electric Machines : Thomas Edison's main continuous current dynamo. U.S.