Center-tapped to dual secondary modificaton tutorial

troystg · 2004-10-17 1:30 am

Hi All-

I just converted my transformer from center-tapped to dual secondary.

The pictures are attached one per post.

Please notice in this diagram I added a second xfmr also...

The concept is here:

troystg · 2004-10-17 1:33 am

first picture.

troystg · 2004-10-17 1:34 am

2nd picture of xfmr open.

troystg · 2004-10-17 1:35 am

3rd pic of coil end matching.

Fluke set to measure resistance. Value in desplay is 1 Ohm. Different xfmrs will have different values.

At the end will be a picture of the WRONG ends showing "OL" (out of limit) on the volt/Ohm meter.

troystg · 2004-10-17 1:36 am

4th pic of pairing the coil leads.

troystg · 2004-10-17 1:40 am

And the center tapped lead un insulated about to be unsoldered.

And yes I did nmean to put this picture higher... Oh yell, I hope you weren't doing it and reading at the same time....

troystg · 2004-10-17 1:42 am

Final pic of the xfmr retaped..

troystg · 2004-10-17 1:50 am

Coil ends of different coils. No continuity. Try again.

richie00boy · 2004-10-17 11:30 am

So, basically you just cut the loop that forms the centre tap, check which wire goes with which winding, and add a wire to the new points?

troystg · 2004-10-17 3:12 pm

Hey richie00boy-

"that be it!"

carlosfm · 2004-10-17 3:55 pm

Thanks for opening this thread, as soundNERD was just needing to do this.

http://www.diyaudio.com/forums/showthread.php?postid=492747#post492747

Center-tapped to dual secondary modificaton tutorial

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