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arXiv · 1702.05320

A low noise modular current source for stable magnetic field control

Valerio Biancalana·Giuseppe Bevilacqua·Piero Chessa·Yordanka Dancheva·Roberto Cecchi·Leonardo Stiaccini
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Abstract

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.

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Valerio Biancalana, Giuseppe Bevilacqua, Piero Chessa, Yordanka Dancheva, Roberto Cecchi, Leonardo Stiaccini. 2017-02-17. A low noise modular current source for stable magnetic field control. https://doi.org/10.1063/1.4977931

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