Measurements on output transformers for the Williamson amp

[sajadho1988]

Hi again, yesterday I was reading this thread: https://www.diyaudio.com/community/...ion-measurements-with-rew.338511/post-5925805

I have an idea to test PP OPTs using reverse method; What if we drive the secondary using a SS amp and series load resistance and then take the signal from primary anode taps into voltage divider and then into Focusrite balanced input, something like this:

So what do you think about it, can this work??

 

[trobbins]

Perhaps try it, along with the reverse direction, then assess and write up your results.

 

[sajadho1988]

Perhaps try it, along with the reverse direction, then assess and write up your results.

Thanks, I'm gonna do that. One question though; on my drawing the center tap should go to ground? Or should it not to connect to anything?

 

[trobbins]

In an amp, the CT is effectively at ground, as is one end of the secondary, so testing should be equivalent so as to maintain voltage levels across internal capacitances.