Re: Question about grid behavior with triodes



Wessel Dirksen wrote:

Hello RAT friends,

I've looked in the books I have but there is not really a useable
explanation over the practical aspects over grid behavior,
particularly with the onset of positive grid current. A few questions
for the knowledgable.

1 Is there a formula over what the load impedance is of a triode
control grid is "normally" and when driven positive?
2 Does grid current only occur when the input signal peak voltage
reaches bias voltage or are there other scenario's?

Large RF power tubes are often operated with positive grid voltages. You may
find more info if you search in that area.

Graham

.

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