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#1
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Drifty resistor or leaky/gassy tube.
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Evolution... |
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#2
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Resistor I can understand, as the set heats up it starts to change in value. I don't quite understand the tube though, how would a gassy tube change as it heats up? Just trying to understand.
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John |
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#3
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As the tubes inter-electrode impedance's change, so does it's operating characteristics. Similar effect to having a drifting external resistor or capacitor, or a combination of both.
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