I have heard, thru the years that there is electron flow without the
filament or cathode being heated
although it is very little.
with the filament or cathode being heated ,there is a "boiling off of
electrons"so to speak
and the process is greatly accelerated .
make any sense ?
"Rich"
On 9/5/2012 3:58 PM, Randall Mullinax wrote:
I still ask for an explanation of why the filament or cathode in a tube has
to
be heated to receive the current flow. I've been asking this question for
fifty
years. Still waiting.
73, Bill W6WRT
_______________________________________________
Excellent!!! I agree.
Randy
AD5RM
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