[SEL] Magneto coil question

[Bob W7AVK]

Jerry - Very good reason to make the core laminated.  To reduce what's 
called eddy currents which if the laminates were not insulated from each 
other would hurt the efficiency of the device.  Do a google on "Eddy 
Current loss" for many hits. http://en.wikipedia.org/wiki/Magnetic_core


Regards,


Bob
Moses Lake, WA.  USA

Jerry Evans wrote:
> Hi Guys,
>          Can anyone explain to me in simple terms why the steel core of a 
> coil (in this case a flywheel magneto coil) is made up of laminations.
>          Is there a scientific reason for this or is it just easier to 
> manufacture this way.
>          Is there a reason why this could not be a solid steel core (as in 
> a piece of steel laser cut to the right shape/size) ?
>          Many thanks for any explanations.
>
>   
>