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18th July 2011, 09:54 PM
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#1 |
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diyAudio Member
Join Date: Aug 2010
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beam tetrode calculations
I was just wondering what the gain equation is for a beam tetrode tube.
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19th July 2011, 02:19 AM
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#2 |
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diyAudio Member
Join Date: Apr 2004
Location: Plainsboro, NJ
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Remember that a beam power tetrode can be electrically equivalent to a power pentode. The EL34 is a power pentode and the "fat bottle" 6CA7 is a beam power tetrode that happen to be "interchangeable".
A reasonable approximation for the gain of a pentode is (gm) (net ZL).
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Eli D. |
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19th July 2011, 06:51 AM
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#3 |
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diyAudio Member
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You're better off using loadlines to determine this.
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