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RE: Graaf GM20 OTL

Banat,
thanks for your inputs.
Do you know why the grids of the high tubes in the cascode amplifier is biased with 47V in place of about one third of the supply positive voltage, as usual? In this way, should the bottom tubes work with too little anode voltage and thus lower gain?

Thanks
Roberto

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  • RE: Graaf GM20 OTL - roio 04:19:17 10/22/14 (0)
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