White noise is often expressed by an equivalent noise resistance, which is defined as the resistance which produces the same voltage noise as present at the tube input.
2.
White noise is often expressed by an equivalent noise resistance, which is defined as the resistance which produces the same voltage noise as present at the valve input.
3.
The equivalent noise resistance in terms of the mean-square noise-generator voltage, " e " 2, within a frequency increment, ? " f ", is given by
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