Can an Electro-Permanent Magnet Work as a Temporary Lifting Device?

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In summary, the conversation discusses the idea of creating a magnet parts lifting device that can be temporarily turned off. The theory proposed is to place two magnets between two iron plates with opposing poles, which should prevent any field lines from leaving the iron. However, upon testing, it was found that the force exerted by the magnets was not significantly different when compared to using just one magnet. The speaker is seeking ideas on where they may have gone wrong in their approach.
  • #1
ctech4285
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So I am trying to come up with a magnet parts lifting device that can be temporarily turned off

Their theory was, take two magnets (7x7x1.5mm in this case) place them between two iron plates with opposing poles and there should not be any field lines leaving the iron.
Take away one of the magnets and the work load closes the field line path, exerting a force

Well it did not work, with two opposing magnets present the force is only slightly less than with one.

Any ideas where I went wrong?
 

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this is exactly what i had in mind
 

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FAQ: Can an Electro-Permanent Magnet Work as a Temporary Lifting Device?

What is an Electro-Permanent Magnet?

An Electro-Permanent Magnet is a type of magnet that can be turned on and off using an electrical current. It combines the advantages of both permanent and electromagnets, allowing for more precise control and energy efficiency.

How does an Electro-Permanent Magnet work?

An Electro-Permanent Magnet works by using a combination of permanent magnets and electromagnets. When an electric current is applied to the electromagnets, they temporarily strengthen the magnetic field of the permanent magnets, creating a strong magnetic force. When the current is turned off, the permanent magnets retain their magnetic strength, allowing for the magnet to be turned off.

What are the advantages of using an Electro-Permanent Magnet?

There are several advantages to using an Electro-Permanent Magnet. These include the ability to turn the magnet on and off, energy efficiency, and precise control of the magnetic field. Additionally, since the permanent magnets retain their strength when the magnet is turned off, there is no need for a continuous power source, making it ideal for applications where power may not always be available.

Where are Electro-Permanent Magnets commonly used?

Electro-Permanent Magnets are commonly used in industrial and manufacturing settings, such as in material handling and lifting equipment. They are also used in medical devices, robotics, and magnetic clamping systems.

What are the potential disadvantages of using an Electro-Permanent Magnet?

While Electro-Permanent Magnets have many advantages, there are also some potential disadvantages. These include the initial cost of the magnet, as they can be more expensive than traditional permanent magnets. They also require a power source to turn on and off, which may not be feasible in all applications. Additionally, if the magnetic field is not properly controlled, it can interfere with nearby electronic devices.

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