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Implementation of a galvanically isolated low-noise power supply board for multi-channel headstage preamplifiers

by: Attila Tóth, Kálmán Máthé, Zoltán Petykó, Imre Szabó, András Czurkó
Journal of Neuroscience Methods, Vol. 171, No. 1. (15 June 2008), pp. 13-18.

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Custom made multi-channel headstage preamplifiers are traditionally powered by battery. By the use of an isolated unregulated DC/DC converter integrated circuit (DCP010512B from Texas Instruments Inc., TX, USA), here we describe the implementation of a galvanically isolated low-noise power supply board for multi-channel headstage preamplifiers. The implemented galvanically isolated power supply board provides the same quality noise free recording as the battery power supply. The non-isolated part of the power supply board is powered by standard 230 V AC/6 V DC wall mount adapter or USB cable. The described galvanically isolated power supply board can replace the batteries in preamplifier power supplies without any deterioration of the quality of recordings.


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