Center-tapped to dual secondary modificaton tutorial

troystg · 17th October 2004, 01:30 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 · 17th October 2004, 01:33 AM

first picture.

troystg · 17th October 2004, 01:34 AM

2nd picture of xfmr open.

troystg · 17th October 2004, 01:35 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 · 17th October 2004, 01:36 AM

4th pic of pairing the coil leads.

troystg · 17th October 2004, 01:40 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 · 17th October 2004, 01:42 AM

Final pic of the xfmr retaped..

troystg · 17th October 2004, 01:50 AM

Coil ends of different coils. No continuity. Try again. :-)

richie00boy · 17th October 2004, 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 · 17th October 2004, 03:12 PM

Hey richie00boy-

"that be it!"

17th October 2004, 03:12 PM	#10
troystg diyAudio Member Join Date: Apr 2004 Location: Lousy Anna	Hey richie00boy- "that be it!" __________________ Troy Thinking positive doesn't make things better, it makes you a better person.

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17th October 2004, 11:30 AM	#9
richie00boy Did it Himself diyAudio Member Join Date: Nov 2003 Location: Gloucestershire, England, UK	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?

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