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RE: 211 valve bias question

To get the most from the 211 in A1, you'll want to operate it at roughly 80W anode dissipation. My 211s run at +1,050V and 70-75mA. That operating point occurs with -52V at the grid.

Incidentally, what's the source of that schematic? There's a lot of junk floating around the Internet, much of it apparently published by persons who don't know whether it works and have never actually built it. I say that because a direct-coupled follower wouldn't normally be used to drive a SET unless Class A2 is desired. In that case, a 6SN7 isn't the right tube for the job. Maybe the designer had a different goal in mind...



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  • RE: 211 valve bias question - Triode_Kingdom 08:05:57 07/07/15 (0)

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