Sawtooth generator and oscilloscope provided with such a sawtooth generator

摘要

A sawtooth generator for e.g. an oscilloscope is disclosed with an accurate DC voltage control after flyback of the sawtooth voltage. The sawtooth generator comprises a balance circuit (DA) in the control loop and an error amplifier (CP) with symmetrical outputs (05,04). A current-mirrored copy of the integration current is supplied as the tall current for the balance circuit. The control loop is thus forced to control around a zero error signal.