Re: Help calculating a different electromagnetic coil please...

On Fri, 03 Feb 2006 09:43:11 -0600, John Fields wrote:

On Fri, 03 Feb 2006 01:13:29 GMT, Rich Grise <richgrise@xxxxxxxxxxx>
wrote:

On Thu, 02 Feb 2006 15:53:36 -0600, John Fields wrote:
On Thu, 02 Feb 2006 20:10:52 GMT, Rich Grise <richgrise@xxxxxxxxxxx>
On Thu, 02 Feb 2006 10:49:43 -0800, WildIrish wrote:

I know the following: Current flow through the coil, number of wraps,
size of wire,
area of the bobbin it's wound on, length of finished coil.

WHAT I WANT TO DO: determine the correct wire size and coil wrap
count to replicate the same amount of magnetic force as the original
coil.... hopefully with less
wraps and hopefully thicker wire to allow me to handle it by hand,
the original
was probably machine wound.
...
You could simply measure it.

You must have missed this part:

"I know the following: Current flow through the coil, number of
wraps"...

I guess my brain-pan skipped over that, because if he knows that already,
then what's the question about?

What's he really trying to do? Or what does he really want to know?

---
You must have missed this part:

"WHAT I WANT TO DO: determine the correct wire size and coil wrap count to
replicate the same amount of magnetic force as the original coil....
hopefully with less wraps and hopefully thicker wire to allow me to handle
it by hand, the original was probably machine wound."

Well, if he knows the number of turns, and the number of amps, that's
ampere-turns. All he would need to do is decide how fat of wire he wants
to use, pick a number of amps, and divide the ampere-turns from (1) above
by amps to get the number of turns.

Or am I missing something?

Thanks,
Rich


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