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Slakjak1215
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I'm not sure if this is in the right section but...Is there a limit to how fast the polarity can be switched on an electromagnet? If there is a limit then how fast can they be switched? Thanks.
Yes. In practice, the more windings you put on a given core, the longer it will take to reverse the current in the winding. More windings lead to it having more inductance.Slakjak1215 said:I'm not sure if this is in the right section but...Is there a limit to how fast the polarity can be switched on an electromagnet? If there is a limit then how fast can they be switched? Thanks.
Slakjak1215 said:I'm not sure if this is in the right section but...Is there a limit to how fast the polarity can be switched on an electromagnet? If there is a limit then how fast can they be switched? Thanks.
Why do you want to both attract then repel the object? Wouldn't it suffice to repel it for a time, then switch off the field, assuming the magnet is positioned below the object?Slakjak1215 said:Okay well, ill just throw this out there, What about creating a positive negative pulse to levitate a very small object. This is what I am shooting for. The pulses would have to be incredibly fast to not jolt it very far.
The speed of polarity switching refers to the rate at which the polarity of a magnetic field changes. This can vary depending on the type of material and external factors, but it is typically measured in nanoseconds or even femtoseconds.
The speed of polarity switching can be measured using various techniques such as time-resolved magneto-optical Kerr effect (TRMOKE), ferromagnetic resonance (FMR) spectroscopy, or ultrafast magnetization dynamics measurements. These methods involve using a laser pulse or magnetic field to induce a change in the magnetic field and then measuring the response time.
The speed of polarity switching can be influenced by several factors such as the type of material, the strength of the applied magnetic field, and the temperature. The properties of the material, such as its magnetic anisotropy and damping coefficient, also play a role in determining the speed of polarity switching.
The speed of polarity switching is crucial in various applications, especially in data storage and information processing devices. The faster the polarity can be switched, the faster data can be read or written, leading to improved performance. It also plays a role in understanding the fundamental properties of magnetic materials and their potential use in future technologies.
Yes, the speed of polarity switching can be controlled by adjusting the external factors such as the strength of the applied magnetic field or the temperature. This can be useful in optimizing the performance of magnetic devices or studying the underlying physics of magnetic materials.