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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: Design parameters I hold dear... {Lynn Olsen} ... posted by hahax@verizon.net on September 1, 2014 at 18:13:22:
"...if 1 volt in gives 5 out 2 should give 10..."
That would be any amplifier with a gain of 14db.
Only compressors and dynamic expanders would give different results.
Linearity is a term given to tubes (and tube operating points) when a grid change, to the negative, changes the plate voltage (following the load line) just as much as a positive grid change.
As in the above example, when the plate voltage doesn't change as much for a negative grid voltage change as it does for a positive grid voltage change the result is harmonic distortion.
An operating point of more current and a higher load impedance (a more horizontal load line) would improve things. Causing a larger plate voltage change for the negative grid change making the output wave form more symmetrical and straighten out the dynamic transfer curve. (less harmonic distortion)
Tre'
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- RE: Design parameters I hold dear... {Lynn Olsen} ... - Tre' 07:33:36 09/02/14 (0)
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