generatorsystem comprehensive two generators

摘要

A generator control circuit comprises means for varying the field current in the generator, a differential amplifier for providing a control signal to said means and the differential amplifier having a pair of inputs. One input is connected to a reference voltage whilst the other input is supplied with a voltage which is proportional to the actual output voltage of the generator and super-imposed on this voltage is a saw tooth voltage which is produced by a saw tooth generator whereby the output of the amplifier will be a pulse width modulated wave train which acts as a control signal for said means.