I am new to tubes and have been reading about the topic as much as possible. I wish to understand better how to estimate the optimal output impedance of for a pp configuration when the data is not published for the tubes in use.
I think the way to do it is to use the characteristic curve for the tube and draw the ideal loadline, calculate the plate resistance at the intersection of the loadline and y axis and then find a transformer that is closer to the value x 4. Am I off? I reversed this concept for some tubes that have published data and it seems to work.
I think the way to do it is to use the characteristic curve for the tube and draw the ideal loadline, calculate the plate resistance at the intersection of the loadline and y axis and then find a transformer that is closer to the value x 4. Am I off? I reversed this concept for some tubes that have published data and it seems to work.