A long time low drift integrator with temperature control

The output of an operationalamplifier always contains signals that could not have been predicted, even with knowledge of the input and an accurately determined closed-loop transfer function. These signals lead to integrator zero-drift over time. A new type of integrator system with a long-term low-drift characteristic has therefore been designed. The integrator system is composed of a temperature control module and an integrator module. Thealuminum printed circuit board of the integrator is glued to athermoelectric cooler to maintain the electronic components at a stable temperature. The integration drift is automatically compensated using an analog-to-digital converter/proportional integration/digital-to-analog converter control circuit. Performance testing in a standardmagnet shows that the proposed integrator, which has an integration time constant of 10 ms, has a low integration drift (

Source: Review of Scientific Instruments - October 26, 2016 Category: Physics Authors: Donglai Zhang, Xiaolan Yan, Enchao Zhang and Shimin Pan Source Type: research