Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems.

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Joseph Casey
 
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Default Sourcing ferrite cores for HV transformers.

Greetings.
I am building 2KV power supplies for which I need Qty 6 UU cores the
type used in HT generators for CRTs. I have had no luck finding them in
catalogs of local distributors. I am in Ireland so a European and
preferably UK supplier is what I need.

Ferrites in general are easy enough to get. My difficulty is finding UU
cores specially designed for HT transformers. Listings of UU cores I
have found seem to be rectangular cross section whereas those intended
for HT have round section to facilitate the construction of the HT
winding. I suspect these there is very limited demand for these items
outside China or whereever our TVs are made these days. As a possible
alternative approach does anyone know a manufacturer building high
voltage equipment? I could beg some!

The size is aproximately 33 mm inside; 55 mm outside giving a diameter
of ~12mm for each of the two core "legs".

I don't know the exact ferrite type except they are to make a 2KV step
up transformer. I succesfully used cores from old TVs before, but the
modern ones are all potted so I can't use them.

I would be very grateful if somebody could point me to a supplier.
Regards
Joseph Casey.

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NSM
 
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"Joseph Casey" wrote in message
...
Greetings.
I am building 2KV power supplies for which I need Qty 6 UU cores the
type used in HT generators for CRTs. I have had no luck finding them in
catalogs of local distributors. I am in Ireland so a European and
preferably UK supplier is what I need.


In N. America we usually go to Amidon. IIRC Philips (FERROXCUBE) was the big
supplier in Europe.

http://www.amidoncorp.com/

N



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Joseph Casey
 
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Default



In N. America we usually go to Amidon. IIRC Philips (FERROXCUBE) was the big
supplier in Europe.

http://www.amidoncorp.com/


Thank you. I have emailed them the spec.
Regards
JC

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