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  1. Medical and Biological Engineering and Computing
  2. Medical and Biological Engineering and Computing : Volume 40
  3. Medical and Biological Engineering and Computing : Volume 40, Issue 5, September 2002
  4. Two-electrode non-differential biopotential amplifier
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Medical and Biological Engineering and Computing : Volume 55
Medical and Biological Engineering and Computing : Volume 54
Medical and Biological Engineering and Computing : Volume 53
Medical and Biological Engineering and Computing : Volume 52
Medical and Biological Engineering and Computing : Volume 51
Medical and Biological Engineering and Computing : Volume 50
Medical and Biological Engineering and Computing : Volume 49
Medical and Biological Engineering and Computing : Volume 48
Medical and Biological Engineering and Computing : Volume 47
Medical and Biological Engineering and Computing : Volume 46
Medical and Biological Engineering and Computing : Volume 45
Medical and Biological Engineering and Computing : Volume 44
Medical and Biological Engineering and Computing : Volume 43
Medical and Biological Engineering and Computing : Volume 42
Medical and Biological Engineering and Computing : Volume 41
Medical and Biological Engineering and Computing : Volume 40
Medical and Biological Engineering and Computing : Volume 40, Issue 6, November 2002
Medical and Biological Engineering and Computing : Volume 40, Issue 5, September 2002
Electromyogram and kinematic analysis of lateral bending in idiopathic scoliosis patients
Neonatal lungs: Maturational changes in lung resistivity spectra
Analysis of the O-wave in acute right ventricular apex impedance measurements with a standard pacing lead in animals
Pneumothorax detection using pulmonary acoustic transmission measurements
Pneumothorax detection using computerised analysis of breath sounds
Experimental and theoretical studies of the effect of electrode polarisation on capacitances of blood and potassium chloride solution
Sauer's non-linear voltage division
Two-electrode non-differential biopotential amplifier
A mathematical model of flow in a liquid-filled visco-elastic tube
Characterisation of electrocardiogram signals based on blind source separation
Experimental approach for testing the uncoupling between cardiovascular variability series
New sensor based on fibre optics for measurement of heart movement
Theoretical study of the effect of local flow disturbances on the concentration of low-density lipoproteins at the luminal surface of end-to-end anastomosed vessels
Control of a hand grasp neuroprosthesis using an electroencephalogram-triggered switch: Demonstration of improvements in performance using wavepacket analysis
Surface myomechanical responses recorded on a scanner galvanometer
Analysis of dynamic cerebral autoregulation using an ARX model based on arterial blood pressure and middle cerebral artery velocity simulation
Medical and Biological Engineering and Computing : Volume 40, Issue 4, July 2002
Medical and Biological Engineering and Computing : Volume 40, Issue 3, May 2002
Medical and Biological Engineering and Computing : Volume 40, Issue 2, March 2002
Medical and Biological Engineering and Computing : Volume 40, Issue 1, January 2002
Medical and Biological Engineering and Computing : Volume 39
Medical and Biological Engineering and Computing : Volume 38
Medical and Biological Engineering and Computing : Volume 37
Medical and Biological Engineering and Computing : Volume 36
Medical and Biological Engineering and Computing : Volume 35

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Two-electrode non-differential biopotential amplifier

Content Provider SpringerLink
Author Dobrev, D.
Copyright Year 2002
Abstract A circuit is proposed for a non-differential two-electrode biopotential amplifier, with a current source and a transimpedance amplifier as a potential equaliser for its inputs, fully emulating a differential amplifier. The principle of operation is that the current in the input of the transimpedance amplifier is sensed and made to flow with the same value in the other input. The circuit has a simple structure and uses a small number of components. The current source maintains balanced common-mode interference currents, thus ensuring high signal input impedance. In addition, these currents can be tolerated up to more than 10μA per input, at a supply voltage of ±5V. A two-electrode differential amplifier with 2×10 MΩ input resistances to the reference point allows less than 0.5μA per input. The circuit can be useful in cases of biosignal acquisition by portable instruments, using low supply voltages, from subjects in areas of high electromagnetic fields. Examples include biosignal recordings in electric power stations and electrically powered locomotives, where traditionally designed input amplifier stages can be saturated.
Starting Page 546
Ending Page 549
Page Count 4
File Format PDF
ISSN 01400118
Journal Medical and Biological Engineering and Computing
Volume Number 40
Issue Number 5
e-ISSN 17410444
Language English
Publisher Springer-Verlag
Publisher Date 2002-01-01
Publisher Place Berlin, Heidelberg
Access Restriction One Nation One Subscription (ONOS)
Subject Keyword Bio-electric amplifier Non-differential circuit Electromagnetic interference Human Physiology Computer Applications Neurosciences Imaging Radiology Biomedical Engineering
Content Type Text
Resource Type Article
Subject Biomedical Engineering Computer Science Applications
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