How do you get rid of unwanted eddy currents?
To eliminate eddy currents you can cut small slits in metals. This will prevent larger eddy currents from occurring. Placing insulators between small laminations can also help to protect against eddy currents.
Some energy is lost in most machines, in most energy transformations. In the case of transformers, the main problem is eddy currents - unwanted currents, that are minimized, but not eliminated completely, by laminating the iron.
Eddy currents are usually unwanted (I can't think of a case where they are good), so there is no application for them. They are a nuisance that is mitigated through various means - cooling, very thin laminations, use of non-metalic clamps, etc.
Transformer cores are made up of insulated laminations to cut down on eddy currents induced in the core, which is an unwanted power-loss.
'Eddy currents' are a circulating currents set up as a result of voltages induced into a metal component which not intended to carry current. For example, eddy currents are induced into the silicon-steel core of a transformer due to voltages induced into the core by the changing currents in the transformer's windings. Eddy currents are unavoidable, although steps can be taken to minimise them -in the case of a transformer's core, by manufacturing the core… Read More
Yes, a transformer has eddy currents.
The laminated plates prevent eddy currents from forming and thus creating unwanted magnetic flux which would counter the flux needed to induce the electric current in the secondary coil
If you are referring to currents in iron cores, circular currents are called eddy currents.
That is to reduce eddy currents, and therefore, transformer losses - since the eddy currents are wasted energy.
J. A. Tegopoulos has written: 'Eddy currents in linear conducting media' -- subject(s): Eddy currents (Electric)
Assuming the eddy currents are caused by the object falling through a magnetic field, the energy for the eddy currents come from the movement through the magnetic field. Therefore, simply due to energy conservation, the object should be slowed down.
An 'eddy' (not 'eddi'!) current is a current that flows in the magnetic circuit (core) of an electrical machine, due to a voltage induced into that core by a changing magnetic field. Eddy currents cause energy losses in electrical machines. To minimise eddy currents and, therefore, their losses, machines use laminated cores which restrict the paths through which eddy currents can flow.
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That's from an analogy from eddy currents in water. Quoting from the Wikipedia, article "Eddy (fluid dynamics": "In fluid dynamics, an eddy is the swirling of a fluid and the reverse current created when the fluid flows past an obstacle."
i don't know......sorry =)
It does. We call this current, or currents, 'eddy currents', and they are minimised by using laminated cores.
Eddy currents are electric currents that are produced inside conductors, through the process of changing the magnetic field in the conductor. The external magnetic field is used as a barrier or skin to protect the eddy.
You can get rid of unwanted animals by taking them to a local animal shelter if the animals are domestic, or alternatively, you can simply have your pets sterilized.
U. R Christensen has written: 'Time varying eddy currents on a conducting surface in 3-D using a network mesh method' -- subject(s): Eddy currents (Electric), Electric networks
Eddy currents are, in general, stray currents of electricity that are created (by induction) in conductors. Any time a magnetic field "sweeps" or "moves across" a conductor, induction occurs, and tiny voltages (with their tiny currents) are set up. These currents, in turn, create small magnetic fields that oppose the magnetic field that induced the eddy currents in the first place. Said another way, any time a voltage is induced in a conductor, eddy currents… Read More
Mostly eddy currents in the transformer core.
Transformer cores are chosen to limit eddy currents, which cause heating and losses in the core. Very thin laminations minimize this overhead cost of running a transformer by reducing losses associated with eddy currents.
It depends on where the unwanted hair is and how much there is of it. The main ways of removing unwanted hair are to shave, pluck or wax
Transformer cores are laminated to reduce the eddy currents (circulating currents) that result from voltages induced into the core, thereby reducing core losses.
as far as i know eddy currents will work on any material as long as the material to be tested is conductive...and it also depends on the penetration to where its being applied
sweat can get rid of body heat, unwanted oils, and dirt on the skin. :)
Eddy currents in the Earths outer liquid core.
Why is it that the measured voltage drops in a series circuit are differ from the calculated voltage drops?
maybe eddy currents
the heat formed in the core due to the "eddy currents" burns a transformer
shave it, or electrolysis
electric braking works due to two laws, Lenz's law and Faraday's Law. Faraday's law has to do with inducing an emf, when a disc on the axle is spun within a magnetic field, which is often created by an electromagnet we produce eddy currents. These eddy currents are fairly random and produce "swirling" induced currents within the disc. The overall net effect of these eddy currents act in a way to appose the motion of… Read More
Presumably, you are asking "What is the function of transformer laminations?", rather than their "uses". A transformer's magnetic circuit, or core, is made from thin sheets of silicon steel, each insulated from each other, and termed laminations. The alternating current flowing through a transformer's primary winding not only induces a voltage into the secondary windings, but into the core itself, resulting in circulating currents, called eddy currents, which result in energy losses. The very low… Read More
The iron core of transformers is laminated to reduce eddy currents, which cause a loss of energy.
To get rid of any unwanted food.
give them to a charity shop
to throw out
Excretion - means to excrete or to get rid of something unwanted.
Not an answerable question because you've specified none of the variables such as rate of change of magnetic flux, flux density, distance, current etc. There probably are formulae that allow you to calculate the eddy currents for given conditions, but I've not encountered them. However it doesn't take much to induce at least very small currents, for that is the principle of the magnetic coupling in a speedometer.
Eddy currents are minimised by choosing a core material which has relatively high resistance, and then manufacturing the magnetic circuit core from laminations of that material -with each lamination insulated from its neighbours.
Eddy currents act to increase the temperature of a transformer's core above ambient temperature, resulting in a loss of energy through heat transfer -thus reducing its efficiency.
The reason we laminate the iron cores in transformers is because we want to limit what are called eddy currents.
Limit effects (heat loss) caused by eddy currents
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Burn it D:<
'Eddy currents' are circulating currents within the core of a machine, such as a transformer, due to voltages induced into that core due to a fluctuating magnetic field. These currents act to raise the temperature of the core, causes energy losses to the surroundings by heat transfer. 'Hysteresis' losses are due to the energy required to alternately magnetise and demagnetise the core as the magnetising current alternates. This energy represents a loss.
because of the choke,as a result of eddy currents in the choke whick has lost its lamination
In magnetism: An eddy current is induced into a metal when magnetic lines of force move across it. A South pole causes circulating current in clockwise direction while a North pole causes current in counter-clockwise direction. These eddy currents thus buck the applied forces. Eddy currents are undesirable when induced into transformer cores causing power loss. Lamination of core material reduces current flow in the core. Current induced into the secondary winding of a transformer… Read More
Eddy current loss in transformers is because of the eddy currents formed in the body of the magnetic core.Whenever a conductor(iron core) exposed to a changing magnetic field a magnetc field produced in the body of the magnetic core.That induce a circulating current in it.Which is called eddy current.In the case transformer it is loss.But it is useful in other purposes.