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Stages of phono preamp
Hi all!
I'm playng around with the project of my phono preamp. After many schematics, now i'm thinking about a EC8010 -- RIAA network -- RCA 76, both tubes CCS loaded. Maybe this isn't a good design, but i'm a rookie in this field, so be patient... At the operating point the plate current for the EC8010 is 25 mA and 4mA for the 76, both are about at 120V on plate. Therefore the EC8010 drives more power than the 76. I wonder if this makes sense. Maybe i'm wrong, but it seems to me that usually every stage drives a following more powerful stage. It has to be so, or there is no relation between the power dissipated in a stage vs. the power dissipated in the following stage? I' didn't found much information about this. |
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