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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: RE: Sorry I posted a wrong diagram, and agai . .... posted by Stephen R on August 25, 2023 at 21:02:09:
Yes, I agree. I see two problems with the circuit as posted: 1) the input impedance of a typical small-signal triode at zero bias is pretty low due to grid current; quite possibly less than the desired 47K resistor; 2) the output of the first stage is around 500mV (with 12AX7 and a 5mV cartridge); the 600-ohm LC module will draw abut 0.8mA, which is equal to the quiescent current. Since cartridges can output up to 50mV on peaks the stage will ve well into clipping on such peaks.
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- RE: Sorry I posted a wrong diagram, and agai . .... - Paul Joppa 08/26/2308:07:47 08/26/23 (0)
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