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In Reply to: RE: I agree with Chip posted by FenderLover on October 18, 2016 at 18:55:38
But, whether or not that is the right value to achieve my parameters, i am not sure as i am pretty much following my other fixed bias amp which had a 50k pot for the voltage adjustment. i admit that the correctly working circuit is not the same as this circuit. This new circuit i chose because it has a fail safe feature. I don't know if it has been vetted by other users. Theoretically, does anyone see why it can not work? I left many of the resistors in the bias circuit unsoldered in anticipation of changes. cheers and thanks for all the suggestions.
Follow Ups:
solve one problem at a time. Measure voltage at each junction in your fixed bias circuit then draw it out, resistances and voltages. The bias circuit draws almost no current so the voltage out will be the resistance ratio. You may have an unsoldered connection making a poor connection
I just saw this. Isn't the amp cathode-biased, Class "A?"
No, i am doing it with fixed bias. Same thing you just bias the amp up with a meter which measures the current on the cathode. One can dial in the amount of bias you want. Also you can have different power tubes and simply and easily adjust the current to suit the different tube's needs.
Are you in intending to run this SE amp in Class "A?"Thanks!
Edits: 10/19/16
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