The purpose of a automatic voltage booster

The purpose of a automatic voltage booster is to maintain the output voltage of a generator at a desired value. As load on an AC generator changes, the voltage will also tend to change. The reasons for this change in voltage is the change in the voltage drop internally across the armature winding caused by a change in load current and the changes in power factor.Because of changes in voltage, due to these factors, AC generators require some auxiliary means of regulating output voltage.Shown here is the electrical symbol used for a voltage regulator. A step voltage regulators is an electronic device connected to the output of a power supply to maintain the output voltage at its constant rated value. This is typically accomplished through the use of resistors.