Comparing between three current source circuits for using in bio electrical impedance design
Document Type
Conference Item
Publication Date
12-1-2009
Abstract
The current source circuit is one of the most important parts in the bioelectrical impedance devices and Bio Impedance tomography (BIT). There are many types of these circuits like (Howland, one op-amp, two op-amps, etc). In this study three types of electronic circuits are built and tested by using "Tina 7" simulation software from Texas Instrument (TI). THS4022 high speed Dual op-amps from Texas Instruments (TI) are used. The results showed that Howland circuit and one op-amp circuit are very stable up to the frequencies of 10 MHz, better than the two op-amp circuit. The two op-amp circuit is good for low frequencies with 10 KHz maximum frequency.
Keywords
Bio-impedance, Bioelectrical impedance, Current source circuit, Electrical impedance, Electronic circuits, Low frequency, Maximum frequency, Simulation software, Texas Instruments, Bandpass amplifiers, Computer software, Electron tubes, Tomography, Electric network analysis
Divisions
fac_eng
Event Title
International Conference for Technical Postgraduates, TECHPOS 2009
Event Location
Kuala Lumpur, Malaysia
Event Dates
14-15 December 2009
Event Type
conference
Additional Information
ISBN: 978-142445223-1 DOI: 10.1109/TECHPOS.2009.5412071