[Amps] {Collins} Understanding Screen Current in a Tetrode

[Vic Rosenthal]

I don't know about 'knowledgeable', but screen current goes negative when more electrons are emitted from the screen than are captured by it. They go the plate. In a pentode, the interposed grounded suppressor grid repels them back to the screen. So I think the answer to your question is 'yes'.

Vic K2VCO /4X6GP 

> On Jan 28, 2015, at 10:56 AM, Roger (K8RI) <k8ri at rogerhalstead.com> wrote:
> 
> I have to ask the more knowledgeable, if the negative screen current is from secondary emission?