Abstract
A voltage-controlled current source (VCCS) is a key component in the electrical stimulation of neuronal tissue. We present a method for the evaluation of output impedance across frequency, of VCCS circuits with applications in transcranial electrical stimulation (tES). Two VCCS circuit architectures, one with a single-ended, and one with a differential output, are theoretically analysed and simulated, and the method is validated by matching these results with empirical measurements. Monte Carlo simulation of the measurement method itself is used to predict its range of applicability under real-world conditions. Both circuits, as well as the method used to determine output impedance, are easy to reproduce, using generic hardware components at low cost. The method described has immediate practical application value in neuroscience research, where it can be used in the deployment and further development of VCCS circuit architectures.
| Original language | English |
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| Title of host publication | BioCAS 2021 - IEEE Biomedical Circuits and Systems Conference, Proceedings |
| Publisher | Institute of Electrical and Electronics Engineers |
| Number of pages | 6 |
| ISBN (Electronic) | 9781728172040 |
| DOIs | |
| Publication status | Published - 2021 |
| Event | 2021 IEEE Biomedical Circuits and Systems Conference, BioCAS 2021 - Virtual, Online, Berlin, Virtual, Online, Germany Duration: 6 Oct 2021 → 9 Oct 2021 https://2021.ieee-biocas.org/ |
Conference
| Conference | 2021 IEEE Biomedical Circuits and Systems Conference, BioCAS 2021 |
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| Abbreviated title | BioCAS |
| Country/Territory | Germany |
| City | Virtual, Online |
| Period | 6/10/21 → 9/10/21 |
| Internet address |
Keywords
- current source
- neural
- neuromodulation
- transcranial