[Milsurplus] Tungar rectifiers

[J Forster]

Probably not. The filament comes up to temperature in a very few
seconds. If the supply does not have separate filament and plate
switches, that would be a clear indication that no warm-up is needed. I
don't recall ever seeing separate switches on battery chargers of the
era.

-John

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Robert Flory wrote:

>  Do these low-voltage mercury rectifiers need to be warmed up before
> applying B+ like high-voltage types?  Hard to imagine that they
> would. Battleship MASSACHUSETTS has a 28V supply to run AN/ARC-1 that
> uses them. Rob Flory