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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: D.C.M.B (Direct Coupling Modulated Bias) posted by Palustris on May 3, 2011 at 15:47:46:
If you use a negative B supply for the input tube, and run that input tube 'inverted' (output from cathode but still with gain) direct to driver tube with plate voltage = bias voltage of output stage, you've done the 'same thing' but have excluded the cathode bias 'R//C' on the driver, and if you think about it, the same with the output tube is _ possible (if you like, or worth to try)It does mean the addition of an input transformer, but 0mADC types are available as high quality, small sized and cost effective - also ratio step up is available.
Multiple edits reflects multiple thoughts, all to the same end.
Anyway, it doesn't matter unless you build it.
Shane.
Edits: 07/24/15 07/24/15
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- RE: D.C.M.B (Direct Coupling Modulated Bias) - shane. 02:32:07 07/24/15 (0)
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