Comparing Strength of Electromagnets and Neodymium Magnets at 4 oz and 12v

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SUMMARY

The discussion concludes that for applications requiring a magnet with a weight of 4 oz and a power supply of 12v, neodymium magnets are preferable for small quantities due to their strength. However, for weights exceeding 1 lb, electromagnets with an iron core are recommended. It is emphasized that electromagnets are limited by current rather than voltage, with a typical power supply of 2 Amps being used, although caution is advised due to potential overheating.

PREREQUISITES
  • Understanding of electromagnet principles and operation
  • Knowledge of neodymium magnet properties
  • Familiarity with current and voltage relationships in electrical circuits
  • Experience with power supply specifications and limitations
NEXT STEPS
  • Research the differences between neodymium and electromagnets
  • Learn about electromagnet design and iron core applications
  • Explore the effects of current on electromagnet performance
  • Investigate thermal management techniques for electromagnets
USEFUL FOR

Engineers, hobbyists, and anyone involved in magnet design or applications, particularly those comparing the use of neodymium versus electromagnets in various weight and power scenarios.

THORPE
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Which one is stronger given they are the same size and weight? Say 4 oz.

Just say you only have 12v to work with on the electromagnet.
 
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Electromagnets scale better then neodymium.
For small quantities, I would say go for neodymium.
Anything past 1lb or so, I would use electromagnets with a iron core.

Also, electromagnets aren't limited by the voltage, but rather the current (as its essentially a short circuit)
I've used 2Amp power supplies before, however you need to keep an eye out on the electromagnet as it will warm up and burn out quickly.
 
That's good news. Thanks for the info you saved me tons of time.
 

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