6F8G tube

[brommermartin]

I use only one triode of the double 6f8g but what to do with the other half ? can I parallel them without troubles ?
I do not use the triode with topcap😊

 

[grovergardner]

It's better to parallel the two halves. A tube with the cathode lit but otherwise unused is subject to cathode poisoning, which will eventually ruin that half of the tube. Or, you could power both halves but only connect one to the following stage.

 

[jhstewart9]

The 6F8G is a 6SN7 with a grid cap. Thats all.
Parallel the sections & enjoy. Put a 10K, Carbon Comp resistor
in each grid lead, close to the plate cap & socket.👍

 

[brommermartin]

Thank you , I will give it a try👍