Is there a source for Data Sheets on transformers - SMPS -

[kinarfi]

I use Datasheets.com and Alldatasheet.com quite often for electronic components often, is there such a site for transformers? specifically, transformers used in SMPS like those used in computer power supplies.
Also, is there a place to get schematics of old power supplies if you have the model number?
Thanks
Jeff

 

[Jony130]

Here you can find some ATX PSU diagrams
http://danyk.cz/s_atx_en.html
As for the transformer, you can olny find a "core" data sheet. Because every switching transformer is individual designs transformer.
EI33 and EDT34 are very common cores.
http://pdf1.alldatasheet.com/datasheet-pdf/view/343423/FERROXCUBE/EI33.html
http://te-epc-lpc.web.cern.ch/te-ep...e-epc-lpc (converters)/ETD34 (FERROXCUBE).pdf

 

[dr pepper]

You can find datasheets for trans cores as above, however when you put an airgap in the core info for all the changes it makes it often not readily available.
What is it your trying to do, build a flyback trans or a push pull?, I've messed with these things a fair bit.
With a bit of patience you can re-use ferrites from dead equipment, the more important parameters can be measured fairly easily.

Edit: Just occured to me if its a trans in a particular design you need you'll only get that info from the manufact as they will have developed the design, there are very few pre made ones.