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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: Filament bias and PP DHT posted by fatbottle on January 26, 2007 at 01:02:14:
"or is it best just to reverse one of the filaments to adjust bias ?"How does doing that adjust the bias?
You need to adjust the *relative bias* on the two tubes to get an accurately identical current in each half of the stage. I don't see any provision to do this in your circuit.
Regards, Allen
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Follow Ups
- Question... - Allen Wright 08:22:17 01/26/07 (3)
- Re: Question... - fatbottle 08:44:50 01/26/07 (2)
- reverse the filament connection and the operating point changes - Allen Wright 04:43:07 01/27/07 (1)
- Re: reverse the filament connection and the operating point changes - fatbottle 13:54:23 01/28/07 (0)
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