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screen grid

screen grid MILIT

screen grid SCIENZE

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Another undesirable consequence of secondary emission is that in extreme cases enough charge can flow to the screen grid to overheat and destroy it. en.wikipedia.org

Limits to screen grid dissipation, in addition to plate dissipation, are listed for power devices. en.wikipedia.org

The positive voltage on the screen grid of a tetrode helps to neutralize the space charge and increases the tube's gain. en.wikipedia.org

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