Voltage monitoring system for intermediate circuit for supplying power converter with electrical voltage, has comparator whose input is connected with voltage divider, where system is supplied with operating voltage via intermediate circuit

摘要

The system has a comparator (9) for determination of an error signal. An input of the comparator is connected with a temperature stable reference unit (8a) for formation of reference voltage. Another input of the comparator is connected with a voltage divider (10) having an adjustable ratio for ascertaining voltage of an intermediate circuit (3). An operating voltage is supplied to the system via the intermediate circuit.