How many turns in my electromagnet?

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SUMMARY

The discussion centers on optimizing a DIY electromagnet using 2 9V D Cell batteries and a 15mm diameter iron core. It is established that 9V batteries are not suitable; instead, 1.5V D cells should be used, preferably connected in parallel for increased current. The consensus is that using thinner wire with more turns is more effective than thicker wire with fewer turns, as it enhances the magnetic field strength. Additionally, the saturation point of the magnet is influenced by the wire gauge and the number of turns, which requires careful consideration for maximum efficiency.

PREREQUISITES
  • Understanding of electromagnet principles
  • Knowledge of electrical resistance and wire gauge
  • Familiarity with battery configurations (series vs. parallel)
  • Basic concepts of magnetic saturation
NEXT STEPS
  • Research the effects of wire gauge on electromagnet performance
  • Learn about battery configurations and their impact on current supply
  • Investigate the concept of magnetic saturation in electromagnets
  • Explore calculations for determining the optimal number of turns for wire
USEFUL FOR

This discussion is beneficial for hobbyists, DIY enthusiasts, and anyone interested in building electromagnets, particularly those looking to optimize performance through proper materials and configurations.

oxidus5886
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Hi,

I am making a DIY electromagnet.

I'm using 2 9v D Cell Batteries as the power source and a 15mm diameter iron core.

I am looking to make the magnet as powerful as possible.

My questions are as follows:

1. Should I connect the batteries in series or parallel?
2. What gauge wire should I use? I know that thicker gauge wire offers less resistance so is it better to go with thicker wire?
3. I guess the main question is thicker wire and less turns or thinner wire and more turns?
4. Also for the given gauge how many turns do i need and at what point would the magnet become saturated?

I know i must seem like I don't know much and it's completely true. :confused: I have been scouring the web and am unable to find a simple enough answer. I would be the first to admit my maths isn't the greatest so some of the answers I have already found have flown right over my head.

Any help you guys could offer would be greatly appreciated.

Many Thanks,

Oxidus
 
Engineering news on Phys.org
Google 3 volt electromagnet.

9 volt batteries should not be used.

1 1/2 volt D cells may be used. Probably parallel would be best.

Very small wire is usually best.
 

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