Re: [CAD_CAM_EDM_DRO] re: reliable information and a question about transformers

With regards to the winding of the secondary, yes. I wound the wire in the
hole left by the removal of the secondary winding. However, I found out by
experience (BAD experience) that I needed to protect the sharp edges with
some sort of insulator prior to winding the secondary. If you don't, then
you will find that you have scraped the insulation off the magnet wire:-{('

I got a little over a volt per turn on the transformer that I used. What I
did was to put in a 1 turn secondary and then measure the voltage to see
what I got. After that, it was a simple matter to make the appropriate
number of turns to get the voltage needed . But then again, I was looking
at 20V per winding max.


At 03:11 PM 5/5/01, you wrote:

>Although not a frequent contributor this this list, I have found the
>information here extremely useful.
>The best information is that which allows us to decide for ourselves if
>something is true, and that is the sort most common here.
>It appears that most of the posters here are of the DIY type, and the list
>is for the benefit of DIY's, so what could be better?
>
>Example:
>I just picked up a microwave oven from the side of the road. Took it to
>pieces, removed magnetron (cool!) and transformer. Found the windings to be
>as described here, that is, separated along the center pole of the magnetic
>structure. Cut the secondary winding off the transformer with old wood
>chisel.
>The transformer laminations are welded together.
>
> Is there are easy way to wind a secondary on this coil?
>
>or do I have to thread all the wire for each turn through the space where
>the original winding was. Not looking forward to that.
>
>Elliot Burke
>
>
>
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Bubba

OLDER THAN DIRT
Country Bubba
(Actually the inventor of Country and Bubba)

axtein@...
LaGrange, GA

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