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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: 6s17k-v vacuum tube posted by tubeman2 on October 30, 2001 at 00:05:46:
Do you really need it?
It has Mu about 150-180. Thus, you'll get amplification about 100-130 and total Miller input capacitance of 150-250 pF. Plus input capacitance of your interconnects - 100-200 pf and this is a hard task to drive for the source.I'm using a similar high mu tube - triode section of 6F12P and I'm faced with 125 pF input capasitance. :-))) I'm thinking to find a substitution - like CC+CG cascode, or just two stages instead of one.
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