[Amps] Measuring Grid Current in GG Amp

Charlie charlie at drhabekost.com
Tue Nov 10 21:33:52 EST 2015


Folks-

In a GG amp, suggestions on how to measure Grid current WITHOUT the typical
semi-floating B-.

Using a SMPS. Plate current and Voltage are present as 0-5 volt full scale.

1)	 Measure Cathode current across Rk, and subtract Cathode I from
Plate I in an op amp to derive Grid I?

2)	Untie the grid from physical ground, RF ground with caps, measure
Grid I across a small resistor?
		
3)	?
		
Thanks for flexing the gray matter.

73 Charlie N6CFH


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