Voltage dividing circuit for an operational amplifier for a signal alternating voltage adapts divider ratio according to the polarity and output signal voltage level

摘要

A voltage divider circuit comprises means of producing a positive and negative voltage for an operational amplifier (21) for a signal alternating voltage (11) from a unipolar voltage source (12). The division ratio is variably and dynamically adjustable depending on the polarity and the level of the output signal voltage (Ua).