Failure of overunity inventions due to wrong core material

[otto]

Hello all,

@Butch

your post about core materials is not only valid for motors and generators.

This is valid for ALL coils with cores.

The prove is in my posts about a 4" TPU where Im using an iron powder core.

I see here in this forum more and more posts about using special cores. Have I to say Metglas cores??

High permeability cores!

Otto

[Honk]

My two cents...

The higher the permeability, the higher the inductance of the electromagnet.
And higher inductance translates into slower response rise time when running the electromagnet.
Slower response translates into less usuable RPM range, being less total power in use.
You should look for a regular permeability but high resistivity core material for good results.
In this case regular laminated non oriented steel, as you have suggested.
There is no use for the expensive and hard to form into shape Metglas Magnetic Alloys.