VVR for fixed bias

[galtjunk]

Is this available anywhere?
I have searched for vvr2 and vvr3 but I can't find one for sale.
If they aren't available, is there a diy solution?

[martin manning]

Seen this? https://tubeamparchive.com/viewtopic.ph ... highlight=

[galtjunk]

Looks like he might get back into production.

Thanks

[xtian]

I think we need to find a better solution than "might."

[JazzGuitarGimp]

I will say this again: I am ready to do a pcb layout and make this board available for purchase, if someone wants to provide a schematic. There is a schematic in Merlin's power supply book, but it lloks a little more involved than the pics I've seen of Dana's board. But it requires only a single-gang pot, as opposed to Dana's dual-gang circuit.

[strelok]

I came across this thread:
http://groupdiy.com/index.php?topic=59855.0

A while back. Scroll down for a schematic. Idk if this is Dana's Fixed bias VVR or not. Apologizes if it is. It's not bias tracking in the strictest since of the word in that the bias is only controlled by one half of a dual gang pot, and uses essentially the same circuit for the bias as you normally would for the B+. So the bias voltage gets scaled linearly with b+. I'm quite certain that bias voltage, b+ voltage and plate current aren't linearly related to each other. However it might turn out to be one of those cases where its good enough.