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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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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: Frequency Compensation posted by Triode_Kingdom on March 1, 2015 at 15:10:02:
6SN7 has about 30% more Miller capacitance than a 300B.
Driving a Miller capacitance has two components. Usually we just worry about the current, which is significant when shoving 70 peak volts into a 300B grid, but not important at 1-2 volts. But the frequency rolloff is not sensitive to voltage level.
Incidentally, the Miller capacitance of the 6SL7 is even worse!
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