ORIGINAL MESSAGE:
On Thu, 02 Aug 2012 18:28:44 -0700, audioguy wrote:
>Anyway, pushing the tube up to maximum plate current (1A) results in
>60ma of grid current, which they don't seem concerned about.
REPLY:
You have plenty of headroom there.
With a 50 ohm input impedance and 50 watts of drive power the RMS grid to
cathode voltage is about 50 VRMS. At 60 mA of grid current, the grid is
dissipating about 3 watts. The grid dissipation is rated at 25 watts.
No problem.
73, Bill W6WRT
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