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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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In Reply to: RE: Any reason I have not seen a fixed bias phono stage??? posted by TomWh on December 9, 2014 at 11:24:52:
"Interstages like low rp tubes but thanks for the idea."
A little "sand" will allow you to have your cake and eat it too. The ZVN0545A enhancement mode MOSFET exhibits tiny capacitances. Even WIMPY high RP/low gm types, like the 12AX7, easily drive the little FET. DC couple (a complete "no brainer") ZVN0545A source followers to the wimpy triodes and your interstage trafos will be fed by a low impedance source.
Eli D.
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Follow Ups
- RE: Any reason I have not seen a fixed bias phono stage??? - Eli Duttman 12:41:14 12/09/14 (1)
- RE: Any reason I have not seen a fixed bias phono stage??? - Michael Samra 13:34:43 12/09/14 (0)
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