Solinoid Construction: Bobbin Material and Rod Direction

  • Thread starter Thread starter magnetic-man
  • Start date Start date
  • Tags Tags
    Construction
Click For Summary
The discussion centers on the optimal material for a solenoid bobbin, with plastic commonly used and aluminum being questioned for its suitability. Participants explore the importance of choosing a non-magnetic material for the spool to avoid interference with the solenoid's function. The right-hand grip rule is debated, with some questioning its necessity since the rod should naturally center itself in the magnetic field created by the coil. It is noted that changing the current direction will affect the rod's movement in relation to the coil. Overall, the conversation emphasizes the relationship between material choice and magnetic behavior in solenoid construction.
magnetic-man
Messages
18
Reaction score
0
What is the best material to use for the bobbin (spool) to wind the copper wire around. I know plastic is used, but is aluminum any good for this? How do you determine which direction the rod will tavel through the coil without testing it first?
 
Physics news on Phys.org
The spool (the non moving part) doesn't really matter if it has no magnetic effect - you don't want to make it out of something more magnetisable than the moving part!

The right hand grip rule !
 
Is the right hand rule needed for a solanoid? I mean, won't the rod will just try to center itself in the magnetic field? So, wherever you place the rod, and whicever way you wind the coil, and whichever way current is flowing, the rod will move toward the center of the coil, yes?
 
If you change the direction of the current the iron bar will move in or out.
Remember the coil will magnetise the core
 

Thread 'Does acceleration affect impact energy vs constant velocity?'

I do not have a good working knowledge of physics yet. I tried to piece this together but after researching this, I couldn’t figure out the correct laws of physics to combine to develop a formula to answer this question. Ex. 1 - A moving object impacts a static object at a constant velocity. Ex. 2 - A moving object impacts a static object at the same velocity but is accelerating at the moment of impact. Assuming the mass of the objects is the same and the velocity at the moment of impact...
View full post »

Similar threads

Undergrad Iron core barely boosting field strength
  • · Replies 43 ·
2
Replies
43
Views
7K
Need an electromagnet to play Chess
  • · Replies 37 ·
2
Replies
37
Views
4K
Undergrad Fabry-Perot Interferometer mirrors
  • · Replies 7 ·
Replies
7
Views
5K
Creating a simulator for an electromagnetic mass driver
  • · Replies 2 ·
Replies
2
Views
2K
Undergrad Building a Linear Induction Motor | Tips & Tricks
  • · Replies 16 ·
Replies
16
Views
3K
Engineering Magnetic field strength of an electromagnet (coil wound around a bobbin)
  • · Replies 17 ·
Replies
17
Views
4K
Surface oxidation of aluminum alloy and electrical continuity
  • · Replies 16 ·
Replies
16
Views
5K
Non uniformly wound solenoid (no Mag. field?)
  • · Replies 2 ·
Replies
2
Views
3K
Undergrad Will a solenoid inside another solenoid increase its strength?
  • · Replies 6 ·
Replies
6
Views
3K
Sustainable building with earth, corrugated galvanised iron and rebars
  • · Replies 40 ·
2
Replies
40
Views
4K