A HIGH-OUTPUT IMPEDANCE CURRENT SOURCE

Authors
DENYER CW LIDGEY FJ ZHU QS MCLEOD CN
Citation
Cw. Denyer et al., A HIGH-OUTPUT IMPEDANCE CURRENT SOURCE, Physiological measurement, 15, 1994, pp. 10000079-10000082
Citations number
2
Categorie Soggetti
Biophysics,"Engineering, Biomedical",Physiology
Journal title
Physiological measurement → ACNP
ISSN journal
09673334
Volume
15
Year of publication
1994
Supplement
2A
Pages
10000079 - 10000082
Database
ISI
SICI code
0967-3334(1994)15:<10000079:AHICS>2.0.ZU;2-7
Abstract
A high output impedance current source was required for electrical imp edance tomography (Err) applications capable of operating up to 200 kH z. The architecture is based on operational-amplifier power-supply cur rent sensing and produces a predominantly capacitive output impedance, which for the design presented is approximately 1.2 pF.