[Milsurplus] Re: half-voltage dynos

[William Donzelli]

> So half-volts on the fils will work, sorta.

It mostly depends on the tube and the maker. For the octals of the
Command Set era, I doubt they would work. Later today I might see what
the tube testers say, but from my experience, I would say no go. Too
many times I have plugged a tube in, set it up, then grumbled when it
showed DEAD, then noticed that I set the filament voltage switch
wrong.

> I've run my RAT-1s at 28 volts B+ and they work well,
> but I never tried half filament voltage.  I wonder about that.
> When I get some time, I'm going to see if I can recreate
> those conditions and measure just how well they work
> at half-speed on the filaments.

It might be fun to see how it works, but do not leave it that way. The
lives of most tubes is drastically shortened when filament voltage is
dropped too low.

--
Will