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Old 17th December 2012, 04:46 PM   #3341
Antoinel is offline Antoinel  United States
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You sure it wasn't useless bull sitting on stone pole
I am glad Zen Mod does not mind all this fun. Camaraderie by way of thread.
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Old 17th December 2012, 05:24 PM   #3342
Zen Mod is offline Zen Mod  Serbia
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they're just lazy

making fun of ZM is easiest thing to do on DiyA

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Old 17th December 2012, 05:24 PM   #3343
flg is offline flg  United States
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What fun? There are pictures on this forum of the Mighty Zen sitting on top of a big stone. We aren't joking! It's all a day in the life of Zen
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Old 17th December 2012, 05:38 PM   #3344
Zen Mod is offline Zen Mod  Serbia
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Old 17th December 2012, 05:59 PM   #3345
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I thought that was only for frying sausages?
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Old 18th December 2012, 03:54 AM   #3346
lhquam is offline lhquam  United States
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ZM is frying his sausages.

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I thought that was only for frying sausages?
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Old 18th December 2012, 11:20 PM   #3347
lhquam is offline lhquam  United States
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Here is a distortion plot of the F6-Variable-2nd-Harmonic circuit using Fairchild FQA28N15 FETs biased at 1.5A using 0R47 source resistors. The P3-P4 Zen Pots were adjusted to settings as low (toward the source pin of the FETs) as possible, but keeping the 2nd harmonic higher than the 3rd harmonic. The 3rd harmonic is significantly higher than in my Teaser-6 builds using SSR100s.

I have only built one channel and have not yet listened to it.
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Old 19th December 2012, 08:46 AM   #3348
dimkasta is offline dimkasta  Greece
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Guys from what I remember from the article, the R100s had minimal thermal drift issues. Is there a need to compensate for it when using IRFs or FQAs?
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Old 19th December 2012, 12:58 PM   #3349
Tea-Bag is offline Tea-Bag  United States
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Guys from what I remember from the article, the R100s had minimal thermal drift issues. Is there a need to compensate for it when using IRFs or FQAs?
Yes, you want a source resistor there, I believe Nelson recommended a minimum of .47R.
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Old 19th December 2012, 06:38 PM   #3350
DougL is offline DougL  United States
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Since ZM challenged me for a LU1014 F6, Here is what I was thinking of.

Feedback is appreciated.

Doug
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File Type: gif Concept F6 with LU1014.gif (15.7 KB, 394 views)
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