Abstract

The method of approach used in the study of flicker noise in positive grid triodes is applied to pentodes with some modifications. It is demonstrated experimentally that the flicker noise current generated at the cathode of a pentode distributes over the positive electrodes in the ratio of the ac currents. Tomlinson's discovery of flicker partition noise is verified and it is shown that his results are caused by a noise current generator connected between screen grid and anode that is indeed independent of the flicker noise generated at the cathode.

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