Schade circuit using lovoltech lu1014d - diyAudio
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Old 3rd November 2015, 07:04 PM   #1
Tyimo is offline Tyimo  Hungary
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Default Schade circuit using lovoltech lu1014d

Hi!

Wouldit be possible to somehow use the "old" lovoltech lu1014d Power Jfet with such a circuit to get a kind of "poor man's SIC"?

Greets:
Tyimo
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Old 3rd November 2015, 07:43 PM   #2
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It's already been done
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Old 3rd November 2015, 08:46 PM   #3
Zen Mod is offline Zen Mod  Serbia
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F3 First Watt

though , there Pa used Lovoltech part in pretty much only voltage condition you can use it

catch22 - when used as that , it's having inherent Shade characteristic , as any triode
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Old 3rd November 2015, 09:48 PM   #4
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Not really - nominally heat sink the part, cascode it, then run feedback from the drain of the cascode device. Instead of going to all that trouble, though, I'd be tempted to use an SiC jfet or one of the larger Ixys depletion mode mosfets.
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Old 3rd November 2015, 10:31 PM   #5
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I thought the whole idea of the Shade feedback was to get triode like curves. And when used as Pass did in the F3 it's operated in this coveted triode regon.
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Old 3rd November 2015, 10:31 PM   #6
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yup
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Old 3rd November 2015, 10:56 PM   #7
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Just build Nelson's hockey puck amp.
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