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Old 14th September 2006, 04:17 AM   #41
rlg_200 is offline rlg_200  Philippines
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try this link for more info about the design.

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Old 14th September 2006, 04:21 AM   #42
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Old 15th September 2006, 02:16 PM   #43
walker is offline walker  Australia
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The concept that having a limited frequency response in a power transformer will filter supply noise is interesting. Especially as the charging current to the main filter caps has a large HF component. If you have a transformer with a lower frequency response that will lead to poor supply regulation and hence greater dynamic compression in the amp.

After a few quick measurements with a variac and some EI and torroid transformers I can assure all that their saturation curves are very similar. Which has higher saturation margin? It depends on which transformer I test not it's core type. Much as theory would suggest.

The quality of the transformer is more important than the core type, IMHO. I'll still stick to using torroids for my original reasons.

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Old 15th September 2006, 02:21 PM   #44
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My rule of thumb... whatever type I can find for a particular project at a reasonable cost, as long as it's not a hunk of junk, I use.
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