That's a great time-saving idea, a combination coil and mass.  Wind it with
Pb wire and you'll be all set.  :-)

But seriously, I wouldn't bother to wind wire in any area which was not
going to be directly between the poles of my magnet.  If you have a magnet
with that large a face diameter you should switch to building a cyclotron!
Build up the middle of the coil form with a piece of wood or MDF board and
just wind your coil on the outermost 1/2 inch or so.

(It's Friday...)

Regards, Ted



Paul Jebb @.............. on 03/10/2000 04:20:07 PM

Please respond to psn-l@..............

Sent by:  psn-l-request@..............


To:   "PSN-L@.............." 
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Subject:  Turns on the coil



Dear Members:
I am pecking away at a Lehman seismometer.  Presently I am winding #38
wire on a a spool that is about 4 inches in diameter, and 3/4 inch
thick.  I think I can fill the spool, but that's a lot of turns.  Can
anyone suggest an optimum number of turns or suggest some guidelines?

Thank you in advance.
Paul Jebb
Newcomb Central School


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