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-   -   Where do you get your transformers? (http://www.diyaudio.com/forums/power-supplies/161987-where-do-you-get-your-transformers.html)

OliG 24th February 2010 03:17 AM

Where do you get your transformers?
 
Hello,

I'm looking for a toroidal transformer to power an Aleph 5. I see that the rails should be ~34v. So I guess I need a 25-30v transformer that provide 650-800VA. The question is : where do you guys get yours?

I've looked at digikey, mouser, partconnections and piltron. Piltron do not have stocks in canada, and partexpress offers avel linberg transfos, but none have adequate voltage/wattage...

Thanks,

Oli

lanchile 24th February 2010 04:28 AM

I got mine here: Toroidal Transformers for power supplies and isolation in medical, instrument, audio and control panel transformer applications. . they will get you any specification that you need.it will take approximate one week ( made here in the USA). the quality is top notch.I strongly recommend them.;)

pooge 24th February 2010 04:44 AM

in Canada, you could try this guy:

SumR - Richard Sumner Technology:: Primrose

OliG 24th February 2010 10:35 PM

Thanks for theses suggestions! I already contacted them.

It seem that the most adequate AC voltage for an Aleph 5 is 2v28V, but I did not see any seller that offer this voltage. I guess I will have to go custom, but before, I would like to know if it is possible to get a 2x30V transfo and reduce voltage on rails with a regulator or voltage divider? I already did this using a LM317T regulator but it was a tiny power supply carrying a lot less current than the 1.5A than the lm317 can output.

If im right, with a 2x30V at 800VA, that would be almost 10A per rails... is it possible to get the ~42VDC to the ideal 34V without too much pain (and heat)?

Thanks !

Oli

DougL 25th February 2010 12:06 AM

I do not know if Canadian shipping is an issue, but this seller has good transformers and good service.

Antek - AN-8430

No affiliation except as a customer.

Doug

mutter 25th February 2010 12:16 AM

Antek does list shipping to Canada:

Antek - Prices

I'm guessing we get hit with duty when we receive it. I'm planning to order from there within the next week or so.

argonrepublic 25th February 2010 01:40 AM

Transformer
 
Check Partsconnexion in Burlington Ontario. I saw some on Canuck audio forums for sale as well

OliG 25th February 2010 11:48 PM

Thanks for all the suggestions!

So far, Antek are by far the least expensives transformers, and they seem to carry every possible type. Do they have an ok quality? What can I expect from a transformer almost half price of a piltron?

Thanks !

Oli

qusp 26th February 2010 01:57 PM

I can highly recommend the custom wound transformers from sumR, Richard is a great guy to deal with too, fantastic quality stuff. the only thing that stops me using him for every project is the shipping from canada of such heavy packages is insane!!. if I lived in canada try and stop me, I would be ordering them left right and center.

as it is for anything mission critical, I go to him. the fact you can specify pretty much anything is great. for my dac I got 3 fully encapsulated transformers in cans with 18AWG solid core pure copper leads. also being able to order with 240v primaries instead of having to wire them in series was cool, so much neater.

gearheaddruid 27th February 2010 10:19 PM

Transformers.
 
Guys, don't laugh, try Ebay. There are a ton of them on there.


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