Hilgen Troubador T-1506 grounded plug/biasing

[The Dude]

Yep. I'd probably use a 22uf anyway. It's a standard value and close enough. It'd be silly to order a 25uf when I have 22uf sitting right here. (Should have said that earlier).

[shortcircuit]

Even if just for testing, most any cap would work for those cathodes. Just tack solder a part in there. Got a 22uf 500v filter cap handy? That would work. We only want to see what difference it makes, not a permanent install. You can get a more pleasing part later.

with a 22uf 35v cap in place as a test I now have 10.8vdc across my 10w 125ohm shared resistor , 322vdc at pin 7 to grnd of el84 , 10.63vdc from pin 3 to grnd of el84.

[Dave H]

with a 22uf 35v cap in place as a test I now have 10.8vdc across my 10w 125ohm shared resistor , 322vdc at pin 7 to grnd of el84 , 10.63vdc from pin 3 to grnd of el84.

That looks about right. EL84 plate dissipation is around 12W.

[shortcircuit]

That looks about right. EL84 plate dissipation is around 12W.

thank you , the support here is nothing but top notch A++