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SET Asylum Single Ended Triodes (SETs), the ultimate tube lovers dream. |
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SET Asylum Single Ended Triodes (SETs), the ultimate tube lovers dream. |
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In Reply to: RE: what does double the transconductance do? posted by DAK on December 8, 2016 at 17:49:01:
A tube with high transconductance will have a large change in plate current with a small change in grid voltage. Conversely, a tube with lower transconductance will have a smaller change in plate current for the same change in grid voltage.
This means that a tube with high transconductance will reach saturation and cutoff (clipping) much more easily (with smaller grid signals) than one with low transconductance. The graph of grid-voltage vs. plate current (Transconductance curve) may be rather sharply curved, and as a result a signal amplified by a high-gain tube may have more distortion even when it is not driven into clipping.
Tubes with lower transconductance will tend to have a broader curve to their graph, and for small signals may be more linear and have less distortion, depending on where the tube is biased. High transconductance tubes have less ability to drive the next stage miller capacitance.
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Follow Ups
- RE: what does double the transconductance do? - Chip647 05:06:06 12/09/16 (0)
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