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Old 14th December 2011, 03:22 PM   #1
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Exclamation Output transformers (Wolpert)

Hi all guys. I am making a restoring from the document from Wolpert audio transformer design. I had used a OCR from the original pdf file, and translate to word format (Word 97 .doc). Also Im making the figures all new from Express Schematic:

ExpressPCB - Free PCB layout and schematic software

and pasting in it. And the formulae are also pasted from

Free Online Equation Editor - create equations, download the image

as an image. Briefly, Ill finish it and Ill posting to all who want it. I believe (for those who dont want to do series production), that all tables containing production information arent necessary, and they will take a long time to re-do them. What can you tell me about this?

Best regards from Barrio Garay, Almirante Brown, Buenos Aires, Argentina.
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Old 14th December 2011, 04:39 PM   #2
kevinkr is offline kevinkr  United States
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Maybe you can publish it sans tables and add them later, the information would be useful to those who wind their own OPTs, and for those who might want to better understand the art of output transformer winding.

JMTCW...
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Old 14th December 2011, 05:03 PM   #3
ChrisA is offline ChrisA  United States
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Quote:
Originally Posted by kevinkr View Post
Maybe you can publish it sans tables and add them later, the information would be useful to those who wind their own OPTs, and for those who might want to better understand the art of output transformer winding.
JMTCW...

+1 on that. Anyone who wants to study the design needs to see the tables. Just leave the table in the raw scanned form if you don't have time.

BTW I'm still looking for a retail supplier of transformer parts, the E-I laminations and so on.
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Old 14th December 2011, 05:17 PM   #4
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Quote:
Originally Posted by ChrisA View Post
BTW I'm still looking for a retail supplier of transformer parts, the E-I laminations and so on.
Did you consider c-cores which you can buy (per piece) at Alpha Cores for a reasonable price? Their stock quality M4 is better than what you might get in EI.
Also much more practical for SE if you experiment with air gapping.
You US guys seem to be stuck with yesterday's technology.

Last edited by pieter t; 14th December 2011 at 05:40 PM.
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Old 14th December 2011, 05:38 PM   #5
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Exclamation OK

The name tables was wrong, I make a mistake. I refer to "winding sheet", "stacking & assembly" and "finishing" that in the scan are confuse and larges. So, Ill try to make like tables in word, but it is a large effort. Then trouble are the response graphics. They are very difficult to re-do, because they have been done in a log-log paper.

Best regards.
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Old 14th December 2011, 08:49 PM   #6
iko is online now iko  Canada
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It would be nice to see these documents. Thanks for doing this. I'm thinking of winding my own opt using c-cores.
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Old 21st September 2012, 06:51 PM   #7
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My job is near to be finished, although still continue working on it. I's caming soon.
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