However, unlike a permanent magnet that needs no power, an electromagnet requires a continuous supply of current to maintain the magnetic field. The lifting electromagnet is in fact a portative ...

The early magnetic separation systems were mainly electromagnets; permanent magnets began making inroads when ceramic material became available and the cost to produce them decreased significantly, ...

Actually, the electro-permanent magnet has both a “hard” (permanent) and a “semi-hard” (i.e., magnetizeable) core. The magnetization of the semi-hard core can be switched using the coil ...

Magnets are awesome. Electromagnets are even cooler. But what if you could make a semi-permanent switchable magnet that acts like an electromagnet, but doesn’t use any energy to hold metal? You ...

Electromagnets differ from the simple permanent magnets that hold artwork to refrigerator doors. Electromagnets consist of a coil of insulated wire carrying an electrical current that generates a ...

In principle, however, the technology of electro-permanent magnet vibration damping could of course also be applied to other areas, such as the precision production of semiconductor chips and ...

As the name suggests, permanent magnets continue to produce a magnetic field once magnetized. An electromagnet is made using coils of conducting wire and produces a magnetic field only when a ...

Instead of electromagnets, the device uses permanent magnets—albeit much more powerful and finely tuned than ones found in everyday novelty and souvenir collectibles.