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Odd/Crazy output transformer design?
Odd/Crazy output transformer design?
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Old 18th September 2012, 10:07 AM   #111
analog_sa is offline analog_sa  Europe
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Quote:
Originally Posted by xpl1c1t View Post

This makes it quite an easy task.


Why?
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Old 18th September 2012, 10:20 AM   #112
TonyTecson is offline TonyTecson  Philippines
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Odd/Crazy output transformer design?
Quote:
Originally Posted by xpl1c1t View Post
Before i read this post I was going to drop the idea of hand winding a toroid output transformer simply because it would be too painstaking to get those hundreds/thousands of feet through the damn donut hole every wind.

This makes it quite an easy task. Thank you linuks!
you need something like this...shuttle can be made of plastic or wood, must pass thru the hole of the core....good luck.....

Click the image to open in full size.
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Old 18th September 2012, 10:23 AM   #113
TonyTecson is offline TonyTecson  Philippines
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Odd/Crazy output transformer design?
Quote:
Originally Posted by pieter t View Post
Please note that progressive winding to lower layer to layer capacitance only tackles one of the capacitive components in a transformer.
The primary by itself also has a capacitive component, the longer the wire the more capacitance.
Therefore choosing a big core with "little" copper is IMHO always better than a small core with "much" copper (apart from nowadays catastrophic copper prices!).
With the big core / little copper combo the lower capacities and DC resistances (copper losses) make better transformers.
thanks, will keep this in mind.....
what is the downside for not utilising the full winding window?
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