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Forum: 702. Power Supplies Thu 04 December 2008, 23:47
Replies: 28
Views: 49,807
Posted By WTI
Nothing really scientific here, I just took some...

Nothing really scientific here, I just took some 12 gauge wire (It's what I had, 14g would be fine I'm sure, and much easier to wrap!) and wrapped it around the core. Solid wire is the best, as multi...
Forum: 702. Power Supplies Thu 04 December 2008, 23:24
Replies: 28
Views: 49,807
Posted By WTI
Here you see the cleaned out core. Secondary...

Here you see the cleaned out core. Secondary windings knocked out, 3v winding sniped out, and Shunts tapped out. I left the paper/mica insulator wrapped around the core for additional insulation. ...
Forum: 702. Power Supplies Thu 04 December 2008, 23:19
Replies: 28
Views: 49,807
Posted By WTI
Next I took a piece of oak and knocked out what...

Next I took a piece of oak and knocked out what was left of the Secondary windings. I also knocked out two little laminated sections called Shunts. These limit the current in the transformer. If...
Forum: 702. Power Supplies Thu 04 December 2008, 23:14
Replies: 28
Views: 49,807
Posted By WTI
The copper windings are super soft, so a regular...

The copper windings are super soft, so a regular wood chisel cuts right through them in about 10 hammer blows. Yeah, I know that's not what quality tools are made for, but I know how to sharpen them...
Forum: 702. Power Supplies Thu 04 December 2008, 23:09
Replies: 28
Views: 49,807
Posted By WTI
How to rewind a Microwave Transformer

Like always, I must state that I'm telling you NOT to do what I am about to show you. Just buy a complete power supply (or even safer, a complete CNC router). This stuff is dangerous!

On my way...
Forum: 702. Power Supplies Thu 04 December 2008, 01:09
Replies: 28
Views: 49,807
Posted By WTI
First 2 posts copied from elsewhere: You...

First 2 posts copied from elsewhere:

You can get a free, heavy duty transformer for your power supply out of any large microwave oven. These are also free on craigslist every day.

Most broken...
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