The aim of this study is to show how the modified Howland current source (MHCS) is affected by temperature changes. The source has been tested in a temperature range from 20 to 70 °C and frequency range from 100 Hz to 1 MHz. Parameters like output current, output impedance, total harmonic distortion, and oscillation have been measured. The measurements were made inside a temperature controlled environment. It was showed that the MHCS is stable at temperatures below 70 °C. Operational amplifiers with a low temperature drift and matching resistor should be carefully considered in order to prevent oscillations at high temperatures.
REFERENCES
1.
S.
Abbas
, U.
Gillani
, S.
Ahmed
, S. B.
Javed y
, and I.
Sajid
, in 17th IEEE International Multi Topic Conference 2014
(IEEE
, Karachi
, 2014
), pp. 508
–551
.2.
H.
Yazdanian
, M. M.
Samani
, and A.
Mahanm
, in Proceedings of 20th Iranian Conference on Biomedical Engineering
, Tehran
, 2013
.3.
A. S.
Ross
, G. J.
Saulnier
, J. C.
Newell
, and D.
Isaacson
, Physiol. Meas.
24
(2
), 509
–516
(2003
).4.
M.
Schuettler
, M.
Franke
, T. B.
Krueger
, and T.
Stieglitz
, J. Neurosci. Methods
171
, 248
–252
(2008
).5.
E.
Alzurq
, A.
Almaktari
, B.
Shuja’a
, M.
Hamoud
, S.
Othman
, and S.
Nasr
, Recent Advances in Environmental Science and Biomedicine
4
, 142
(2016
).6.
D. A.
Miranda
, J. G.
Barrero
, and J. H.
Echeverri
, Revista Salud UIS
2006
, 189
–196
.7.
J.
Amaya
and W.
Maria
, Analog Integr. Circuits Signal Process.
89
, 541
(2016
).8.
P.
Bertemes
, R. G.
Lima
, M. B. P.
Amato
, and H.
Tanak
, in Congresso Brasileiro de Engenharia Biomédica
, São Pedro
, 2006
.9.
P.
Bertemes-Filho
, A.
Felipe
, and V. V.
Vincence
, Circuits Syst.
04
, 451
–458
(2013
).10.
AN-1515, Texas Instruments, 2013.
11.
L.
Xiaoke
, D.
Feng
, and F.
Yan
, in 2012 24th Chinese Control and Decision Conference (CCDC)
(IEEE Industrial Electronics
, Taiyuan
, 2012
), pp. 2607
–2612
.12.
13.
B.
Nguyen
and D.
Smith
, Report No. SLOA045, Texas Instruments
, 2000
.14.
P.
Bertemes
, Tissue Characterisation Using an Impedance Spectroscopy Probe
(University of Sheffield
, 2002
).15.
M.
Rafiei-Naeini
and H.
McCann
, Physiol. Meas.
29
, S173
–S184
(2008
).16.
S.
Khalil
, M.
Mohktar
, and F.
Ibrahim
, Sensors
14
, 10895
–10928
(2014
).17.
J.
Hoja
and G.
Lentka
, in 12th IMEKO TC1 and TC7 Joint Symposium on Man Science and Measurement
, Annecy
, 2008
.18.
T.
Qureshi
, C.
Chatwin
, N.
Huber
, A.
Zarafshani
, B.
Tunstall
, and W.
Wang
, J. Phys.: Conf. Ser.
224
, 012167
(2010
).© 2017 Author(s).
2017
Author(s)
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