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Old 9th January 2010, 05:17 PM   #1
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Join Date: Nov 2008
Location: Israel
Default Looking for R Core power trafo and choke

I'm looking for R Core power trafo, either existing one, or custom ordered one.
The trafo's minimum data should be:
Primary: 0-230V or 2 x 0-115V, 70W (or more than 70W).
Screen.
Secondary:
1. 310-0-310 Volt, 100mA (or more that 100mA);
2. 0-6.3V, 1A (or more than 1A);
3. 0-9V (or 0-10V), 2A (or more than 2A).
or
4. 0-9V (or 0-10V), 1A (or more than 1A);
5. 0-9V (or 0-10V), 1A (or more than 1A).

Also, I'm looking for choke, 20H, 100mA (or more than 100mA).

Are there available such trafo and choke?

Alternatively I'm looking for source known for quality products, custom ordered R Core power trafos and chokes.
Does anybody have experience with those trafos?:
Audio Catalog
And those chokes?:
Audio Catalog
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Old 9th January 2010, 10:28 PM   #2
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Join Date: Jan 2004
Location: Koskenkorva Land
Hi Joshua,

maybe you have taken notice of my thread:
Bare R Cores and bobbins, where???

The R-cores are popular mainly in the far east as you may have noticed.
No matter of you are looking for output transformer or power transformer, the availability is spares.

If you Google with the keywords "R-core" and "eBay" there are a few, of course you can go to eBay and search directly, but the offers aren't many...

If you find anything please reply to my thread as well I'd appreciate that as I am looking for power transformers and chokes preferably made of R-core too, good luck!

Cheers Michael
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Old 9th January 2010, 11:27 PM   #3
rastus is offline rastus  Australia
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Join Date: Mar 2005
Location: QLD
Quote:
Does anybody have experience with those trafos?:
Audio Catalog
I use their r-core power transformers with no problems at all (3 different types so far and will for future builds).

Dunno about the chokes though (never tried them).
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Old 10th January 2010, 04:33 AM   #4
kmtang is offline kmtang  Canada
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Location: Vancouver
I tried their chokes as plate load for the 6SN7. I would say it works but it is not well designed for such purpose.

Johnny
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Old 10th January 2010, 10:03 AM   #5
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Location: Israel
Quote:
Originally Posted by kmtang View Post
I tried their chokes as plate load for the 6SN7. I would say it works but it is not well designed for such purpose.

Johnny
Thanks, I intend to use the choke only on the PSU filtering.
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