[AMPS] Zero Bias in GG Amp.

[Firson, YD1BIH]

Thanks for Mr.Egen, Karlsson and Perzonka, for yours attention to my 
problem, by the way, almost old version Grounded Grid Amplifier using zero 
bias in their cathode, I don't know what limitation happen in a few years 
ago, so how to determine the class service of this GG amplifier either AB1, 
AB2 or class B ???. but recently almost every GG
Amp. design using diode zener for cathode biasing, my question, how to 
determine this zener voltage for various tube that available in  the market.


Thanks in advance
Firson - YD1BIH

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