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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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In Reply to: RE: Yup, but the 5751 can be used in place of a 12AX7 so long as posted by Jim McShane on December 14, 2015 at 14:02:24:
If we assume a total plate load of 180k TubeCad shows a stage gain for the 12ax7 of 75. The plate voltage moves up 75 volts as the grid voltage moves from -1 to -2 volts showing a stage gain of 75. (because of the non-linearity of the tube, the plate voltage move even farther when the grid voltage is increased from -1 to 0 volts)With the 5751 the plate voltage moves only 53 volts when the gird voltage moves from -1.5 to -2.5 showing a stage gain of 53.
This is a reduction of 22 volts. 22 is 29.33% of 75.
Tre'
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Edits: 12/20/15
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Follow Ups
- RE: Yup, but the 5751 can be used in place of a 12AX7 so long as - Tre' 20:20:40 12/20/15 (3)
- RE: Yup, but the 5751 can be used in place of a 12AX7 so long as - Jim McShane 07:59:25 12/21/15 (2)
- RE: Yup, but the 5751 can be used in place of a 12AX7 so long as - Tre' 09:22:46 12/21/15 (1)
- RE: Yup, but the 5751 can be used in place of a 12AX7 so long as - Jim McShane 09:34:41 12/21/15 (0)
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