Op. amp. circuit operating system for automatic offset error correction

摘要

The operating system has the op. amp. circuit (1) supplied with a bias voltage (Uv) for providing a given positive offset value, with periodic sampling of the min. value of the input signal (Ue) for the amplifier, for providing a correction value for the amplifier output signal (Ua). Pref. the detected min. value of the amplifier input signal is fed to a microprocessor as a regulation value for regulating the amplifier circuit.