My father used to do this kind of work decades ago so I know how it is
done. Rewinding is not difficult (as long as we're not talking about
toroids). But what sometimes is very difficult is to disassemble the
transformer without ruining the laminations.
Before I bought my current power supply I had an idea I'll rewind the
secondary on this huge 3.5kW isolation transformer I have.
The problem is the lamination are completely and utterly stuck. I tried
everything. Knocking it gently and less gently. Punching it out. Pressing
it. Nothing works. Some transformers are so tightly assembled a fellow at
home has no hope of pulling them apart.
Unless one had some sort of a jig and the transformer has holes on both
sides that can be used for pulling with bolts. Then a hydraulic jack could
be used to pull it apart.
Before a suggestion of boiling it in solvent comes up, let me say it wasn't
glued together. Simply held by (very strong) friction.
73,
F
On Tue, 19 Nov 2024, 18:54 Gary Smith, <wa6fgi@steeltrails.net> wrote:
> Silly as it may sound, I had a transformer problem years ago, the solution
> was having it rewound by an electric motor rebuilding shop.
> This idea was suggested to me by my father who did not have a ham license.
> Followed his suggestion, got the amp back to life, used it for several
> more yeas until I sold it.
> Gary…wa6fgi
>
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