Circuit arrangement for measuring an electrical voltage in an electrical machine comprises a voltage supply for preparing a distribution voltage for an amplifier

摘要

Circuit arrangement comprises a voltage supply for preparing a distribution voltage (UOP+, UOP-) for the first amplifier (OPA). The distribution voltage is based on a potential lying on the voltage input of the amplifier. Preferred Features: The voltage supply prepares a positive and a negative distribution voltage, in which both distribution voltages are symmetrical to the potential lying on the voltage input of the amplifier. An evaluation unit (OPB) is connected to the amplifier for further processing of the output signal of the amplifier.