公开(公告)号：US20230375601A1

公开(公告)日：2023-11-23

申请号：US18322137

申请日：2023-05-23

申请人： BSH Hausgeräte GmbH

发明人： Florian Schmid

IPC分类号： G01R19/165 ,  G01R1/04 ,  G01R1/20 ,  G01R19/175 ,  G01R31/00 ,  G01R19/25

CPC分类号： G01R19/16547 ,  G01R1/0416 ,  G01R1/203 ,  G01R19/175 ,  G01R31/005 ,  G01R19/2503

摘要： A measuring apparatus ascertains measurement information relating to an input voltage. The measuring apparatus contains an operational amplifier having first and second inputs, and an output for providing the measurement information. The measuring apparatus further has a first input node for coupling to a first pole of the input voltage, and a first isolation resistor which connects the first input node to the first input of the operational amplifier. Moreover, the measuring apparatus contains a second input node for coupling to a second pole of the input voltage, and a second isolation resistor which connects the second input node to the second input of the operational amplifier. The measuring apparatus further has a feedback resistor which connects the output of the operational amplifier to the first input of the operational amplifier, and a reference resistor which connects the second input of the operational amplifier to a reference potential.