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05-08-2023, 07:39 PM
Hi Guys
Champ81: Since you say you have TUT2, you need to read it and look at the fixed-to-cathode-bias switching. That lets you use either method. In fixed-bias, it is simple to be able to hum-balance the output stage; in cathode-bias it is a bit more expensive, although there are ways that are not expensive but require a more complex grid circuit.
Making Rk variable will not dial the amp to fixed-bias;rather, it will be dialed to a melt-down.
Makinrose: You are correct; I was mistaken
Dpn Rickles says, "You win a cookie".
Champ81: Since you say you have TUT2, you need to read it and look at the fixed-to-cathode-bias switching. That lets you use either method. In fixed-bias, it is simple to be able to hum-balance the output stage; in cathode-bias it is a bit more expensive, although there are ways that are not expensive but require a more complex grid circuit.
Making Rk variable will not dial the amp to fixed-bias;rather, it will be dialed to a melt-down.
Makinrose: You are correct; I was mistaken
Dpn Rickles says, "You win a cookie".
