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A COLLECTOR-INJECTION MODULATOR is a transistorized version of the plate modulator.
It is classified as a high-level modulator, although present state-of-the-art transistors limit them to
medium-power applications.
A CONTROL-GRID MODULATOR is a low-level modulator that is used where a minimum of af
modulator power is desired. It is less efficient than a plate modulator and produces more distortion.
