A low cost, stable, programmable, unipolar current source is described. The circuit is designed in view of a modular arrangement, suitable for applications where several DC sources must be controlled at once. A hybrid switching/linear design helps in improving the stability and in reducing the power dissipation and cross-talking. Multiple units can be supplied by a single DC power supply, while allowing for a variety of maximal current values and compliance voltages at the outputs. The circuit is analogically controlled by an unipolar voltage, enabling current programmability and control through commercial digital-to-analogue conversion cards.
Cite
@article{arxiv.1702.05320,
title = {A low noise modular current source for stable magnetic field control},
author = {Valerio Biancalana and Giuseppe Bevilacqua and Piero Chessa and Yordanka Dancheva and Roberto Cecchi and Leonardo Stiaccini},
journal= {arXiv preprint arXiv:1702.05320},
year = {2017}
}
Comments
4 pages, 5 figures, submitted to Rev. Sci. Instrum