9 Nov
2005
9 Nov
'05
9:46 a.m.
On 11/9/2005 at 10:46 AM Allison wrote:
The serious limitation for tubes has always been the
heat and power
from the filament rather than the heat and power used for functional
circuits.
So whatever happened to tunnel cathodes? It was a very hot topic in the
60's.
Cheers,
Chuck