Hi Morris,
I just checked Ebay and found none, which I find quite unusual. There
used to be a seller (I *think* it was Micah Mabelitini from this group)
who had listed them for quite some time.
Best regards,
Jens
Am 06.02.2011 09:37, schrieb morrisodell:
Hi all,
I have to repair my old faithful VFD clock which has given faithful
service for over 30 years! Its a cute little ball shaped Japanese
unit, which uses four LD8051 VFD tubes. The symptom is that two of the
digits have become very bright and the other two are very dim. The
cause? Each tube has two paralleled filaments and the 4 tubes'
filament leads are connected in series. Two of the tubes have lost a
half-filament, thus leading to two bright and two dull digits. I'll
leave the answer as to which are bright, which are dark and why as an
exercise for the readers :-)
NEC LD8051 VFD tubes are, to put it mildly, hard to find. Russian IV-3
tubes are available on the auction site. So my question is, how
similar are they and what are the ratings and base pinouts ? That info
is hard to find as well.
Anyone have a data sheet?
Morris
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