Physical parameter measurement device for use with a sensor or transducer, has a switched capacitance with a serial electronic switch that is controlled by a switching mechanism in conjunction with other switches

摘要

Measurement device for measuring physical parameters by voltage measurement comprises an input circuit with a sensor and an output circuit with an analogue to digital converter. The circuit creates a voltage (U1) that can be switched to a second potential difference via a switched capacitance (Cs). The switched capacitance is arranged in series with an additional electronic switch (S6) with switches (S1-S6) controlled by an electronic switching mechanism.