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14th June 2011, 02:01 AM
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#1 |
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diyAudio Member
Join Date: Feb 2011
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push pull adjustable fixed bias
When designing adjustable bias for push pull circuits, do i need only one pot that increases bias voltage in one tube and at the same decreases on the other, or, is it better to have two pot, one for each tube? Does this even matter?
Thanks |
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14th June 2011, 02:08 AM
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#2 |
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diyAudio Member
Join Date: Aug 2006
Location: Taxland, New Jersey
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In my opinion it's always best to have two adjustment pots. Either independent, one for each tube, or one for balance and one for level. Either way works equally well.
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"The supercomputer is technologically impossible. It would take all of the water that flows over Niagara Falls to cool the heat generated by the number of vacuum tubes required." ~ Professor of Electrical Engineering, New York University |
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14th June 2011, 03:06 AM
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#3 |
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diyAudio Member
Join Date: Feb 2011
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thanks, but how would i do that? Do you have a circuit i could take a look? Also, how do i calculate the resistance? I mean i dont even know how to follow the current path on that part of the circuit (under normal conditions, of course, without considering grid current)...
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