Telefunken TDA-1 DI transformer info needed

[madreza]

Hi guys. I need to replace a TDA-1 DI ´s transformer
I can’t find any info on that
Any help would be great

 

[Alex1238]

Somewhere along the OEP A187 line, it looks like you've torn out the pins pretty royally otherwise it'd have been pretty easy to match up the DCR on the windings. The box as a whole comes off as a pretty low effort product so if i were a betting man i'd be very sure it's just a relabeled off the shelf trafo and not a custom made one. If you can somehow measure the DCRs, do that and you'll have a very easy time finding a replacement.

This one is the only one i could find that matches the pin layout at least
https://carnhill.co.uk/wp-content/uploads/2019/07/A187A13C.pdf

 

[Migs 31]

Hi guys. I need to replace a TDA-1 DI ´s transformer
I can’t find any info on that
Any help would be great

You will have to give us a bit more info than that, for someone here to be able to help.
At least take out a Meter and mesure the Primary and Secondary Resistances and compare with existing OEP products like the ones sold on RS, second picture below.

https://fr.rs-online.com/web/p/transformateurs-audio/6676044

PS: just to clarify, I'm not saying this is the exact very same one as yours.Just a guide.


Bonne Chance.
M

 

[CJ]

You want a 1:10 ish ratio

PRI dcr around 30 ohms

Sec dcr about 3 k ohms if that is any help

Oh, and shields between PRI and sec and around the whole enchilada

 

[madreza]

Thanks a lot guys for your help , I'm gonna look at that as soon as I can