Determining OT secondary impedance

[otto pärt]

Let's say you've got a salvaged output transformer. You know that it was used with a pair of 6L6's, or whatever, so the primary impedance is not a pressing issue. And there's no way to find the original schematic or any data on the transformer. Is there a way to ascertain its secondary impedance?

[Bruce / Mission Amps]

Let's say you've got a salvaged output transformer. You know that it was used with a pair of 6L6's, or whatever, so the primary impedance is not a pressing issue. And there's no way to find the original schematic or any data on the transformer. Is there a way to ascertain its secondary impedance?

Yes it is fairly simple.
But the first thing to do is run a search here for keywords like what you are asking.... since this question is asked and answered many many times, over again here on the MEF, I bet you'll find out what you want to know in short order.

[otto pärt]

Yes it is fairly simple.
But the first thing to do is run a search here for keywords like what you are asking.... since this question is asked and answered many many times, over again here on the MEF, I bet you'll find out what you want to know in short order.

Yikes. Sorry, I did.

[defaced]

You'll have better results searching for the opposite, determining the primary impedance. If you know this OT was used with a pair of 6L6, you can figure the primary impedance was about 4K, from there with the test methods described, you can figure out the secondary impedances.

[otto pärt]

Oh well, here are a couple of bread crumbs for the next putz who thinks this is a good question:

http://music-electronics-forum.com/t10057/
http://music-electronics-forum.com/t9119/