I would like to find a 640 VA EI transformer, 40-0-40V secondary, 120V primary. I've heard of people hacking apart old transformers and rewinding them for the voltage and power needed. Anybody ever done this before?
Jup I and my friend did each one. I did it for 230v/23-0-23v,12-0-12v don't really know the power but from core size it is 450W+, I also tested it I couldn't be more happy with it. My friend did one for 230v/64-0-64v around 500-600W, also happy with it.
Trafo desn't look this way anymore, since I put on some terminals for input and output, and I have repainted it.
Trafo desn't look this way anymore, since I put on some terminals for input and output, and I have repainted it.
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Did you take it down to the bare core or use the existing primary coil? How did you make the center taps in each of your secondary windings? Where did you get the core?
Bare bone, everything from the start. First I winded one ces, then second one, and simply joined end of first with start of second, or just like you would do with trafo that has two secondarys.I had this trafo for some time, with voltages that wasn't useful to me so,... He was assimilated 😀
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