The VFD for the display on my kitchen's oven runs 24/7, and after 12 years
there are very noticeable dark-bands near the filament, which is probably
the result of higher bombardment of electrons onto the phosphor. The
filament does not glow bright enough to see it, and it's always on.
So, if
That's interesting Robert, thank you for sharing. I am not so comfortable
and fast with case building, so the less holes I have to drill, the better
;-)
>
> ... on one of my small VFD clocks it's difficult to modify the base board
> to remove filament voltage and I'm tired of replacing failed
Hi folks,
Pretty much all my clocks have some form of passive IR control to avoid
burning tubes when no one is looking... In many cases the PIR control is
accomplished with modifications to the controller board, but some of the
clocks are more of a pain to modify than others. In particular, on
