Permanent magnets as coil cores?

[vinhkan]

What are the benefits of using a permanent magnet for a coil core.
I recently came across a design for a switching power supply that used
magnets as cores for the inductor. I have never heard of such a thing,
except maybe in speakers.

 

[JeffM]

What are the benefits of using a permanent magnet for a coil core.

Your use of Usenet
http://groups.google.com/groups/sea...uJvt-JkA5nW4iK5_ckrHRAYuDYR832hY26Q&scoring=d
http://groups.google.com/groups/search?q=permanent-magnets-as-coil-cores&scoring=d&filter=0

needs improvement.
http://www.google.com/search?q=cach...arked-as-Read-in-ALL-*-groups+Newsgroups.line
More here:
http://groups.google.com/group/sci....ups+*-*-*-*-two-groups-*-*-aren't-*-different
http://groups.google.com/group/sci....ups+*-*-*-*-two-groups-*-*-aren't-*-different

 

[John]

Why don't you find the person's email and send to them directly?
There's a much greater chance that they will see your response.

Your repeated posts about multi-posting take more bandwidth than the
people you are faulting.

Get a life...