Re: [Amps] Zener Screen Regulators

[Rob Atkinson <ranchorobbo@gmail.com>]

>
> 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.
>

That's a different situation from charge transfer via direct contact
with a conductor.

rob
k5uj
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