On Tue, 07 Jun 2005 20:17:28 GMT, Gene Fuller
wrote:

One of the reasons for adding more grids in vacuum tubes is to manage
secondary emission from the plate. This occurs at much less than 17 kV.

Hi Gene,

Sure, but not X-Rays which attend Cold Cathode tubes (skipping the gas
filled tubes I've already touched upon) and do require elevated
potentials to be so useful (that they become dangerously useful).

Glad you won't attempt the other howlers.

73's
Richard Clark, KB7QHC