Greetings,
Ok... I think I need to try something different but
wonder what those with experience thought. I was
sooooooo encouraged that this would work.
I took my existing circuit and had to switch to a
lower voltage transformer so I could use the higher
voltage one to try the test. I adjusted it to 350V
and then from a supply built with the bigger
transformer, applied 556 volts to it's output through
7.5K of resistance. Voltage rose only 4 volts. I
then switched to a 5K resistor.... voltage rose to
360V at which point 38mA was measured. Dropping to
2.5K passed 54mA but the voltage was 403.
Unless someone thinks otherwise, I think I need to try
something a little different but...????
On the topic of negative screen currents.... how does
this happen anyway. I mean wouldn't the grid have to
'emit' like a cathode or filament?
Many thanks and Happy Holidays!
Randy (AD5GB)
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