[Boatanchors] 0Z4 Rectifier

[Jim Haynes]

On Tue, 18 May 2010, mac wrote:

> Saved a couple of amps of filament current.  Significant back in the days of 
> 6 volt electrical systems.
>
Would be 600ma. if they had used a 6X5.  But then why were not cold-
cathode rectifiers used in AC operated equipment?  granted the power
saving is less important, but still would be significant.  And now
that I think of it, cold-cathode rectifiers were used early on in the
"battery eliminators" that used tubes like BA and BR.