any audio tube guys here?

[KT77]

I have a few questions regarding plate voltage and AC load.

 

[itsmoked]

I have no chicken entrails to peruse in an effort to divine your questions.

So ask them already.

Keith Cress
kcress -

http://www.flaminsystems.com

 

[KT77]

alrighty
PP EL34, fixed bias,
given varying plate voltage (200-400Va-k), and screen voltage following by a few volts (via screen resistor tied to OT CT), does the plate load vary much w/ varying Va? How much over 50V variation? How much over 100V variation?
I'm just looking for ballpark number....

Right now, I have a 3.4ka-a OT into 16ohm load...450V on EL34 plates, but I want to reduce plate voltage, and know the resulting reflected impedance variation. Again...ballpark numbers

TIA

 

[roydm]

Why should we rack our brains trying to remember that stuff when you can do it?
Here is a link

http://www.tubebuilder.com/images/tubedata/el34specs.pdf

Roy