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Suppressor-Grid Modulation

Author: J.B. Hoag

The audio-frequency voltages can also be introduced into the amplifier tube by applying them in series with the suppressor grid of a pentode, as in Fig. 16 L.

Fig. 16 L. Elementary circuit for suppressor-grid modulator

The principle of operation is the same as for grid-bias modulation, but the circuit is easier to adjust in practice.

Last Update: 2009-11-01