Implementation of a galvanically isolated low-noise power supply board for multi-channel headstage preamplifiers.
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.
Tóth
Attila
A
Analogical and Neural Computing Systems Laboratory, Computer and Automation Research Institute of the Hungarian Academy of Sciences, Kende u. 13-17, H-1111 Budapest, Hungary.
Máthé
Kálmán
K
Petykó
Zoltán
Z
Szabó
Imre
I
Czurkó
András
A
D000669:Amplifiers, Electronic; D000703:Analog-Digital Conversion; D011211:Electric Power Supplies; D004594:Electrophysiology / Q000295:instrumentation*; D004867:Equipment Design