BRIDGE AMPLIFIER WITH FEEDBACK OVER THE LOAD

摘要

A bridge amplifier circuit comprising two amplifiers in bridge configuration is presented, wherein a feedback path from the output of one of the amplifiers to the reference input of the other amplifier is provided, together with compensation means for reducing the voltage variation at the reference input. In this way offset and distortion are reduced, although the gain of the amplifier circuit is not affected by the presence of the feedback path.