A simple constant-current neural stimulator with accurate pulse-amplitude control

Detalhes bibliográficos
Autor(a) principal: De Lima, J. A. [UNESP]
Data de Publicação: 2001
Outros Autores: Cordeiro, A. S. [UNESP]
Tipo de documento: Artigo de conferência
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1109/IEMBS.2001.1020441
http://hdl.handle.net/11449/66665
Resumo: A simple constant-current electrocutaneous stimulator for high-impedance loads using low-cost, standard high-voltage components is presented. A voltage-regulator powers an oscillator built across the primary of a transformer whose secondary delivers, after rectification, the high-voltage supply to switched current-mirrors in the driving stage. Since the compliance high-voltage is proportional to the stimulation current, overall power consumption is minimized. By adjusting the regulated voltage, control of the pulsed-current amplitude is achieved. A prototype with readily available components features stimulation currents of amplitude and pulsewidth in the range 0≤Iskin≤20mA and 50μs ≤Tpulse≤1ms, respectively. Pulse-repetition spans from 1 Hz to 10Hz. Worst-case ripple is 3.7% @Iskin=1mA. Measured pulse fall-time is shorter than 32μs. Overall consumption is 4.4W @Iskin=20mA. Subject isolation from line is 4KV.
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spelling A simple constant-current neural stimulator with accurate pulse-amplitude controlA simple constant-current electrocutaneous stimulator for high-impedance loads using low-cost, standard high-voltage components is presented. A voltage-regulator powers an oscillator built across the primary of a transformer whose secondary delivers, after rectification, the high-voltage supply to switched current-mirrors in the driving stage. Since the compliance high-voltage is proportional to the stimulation current, overall power consumption is minimized. By adjusting the regulated voltage, control of the pulsed-current amplitude is achieved. A prototype with readily available components features stimulation currents of amplitude and pulsewidth in the range 0≤Iskin≤20mA and 50μs ≤Tpulse≤1ms, respectively. Pulse-repetition spans from 1 Hz to 10Hz. Worst-case ripple is 3.7% @Iskin=1mA. Measured pulse fall-time is shorter than 32μs. Overall consumption is 4.4W @Iskin=20mA. Subject isolation from line is 4KV.VLSI and Instrumentation Group Electrical Engineering Department Universidade Estadual Paulista, 12516-410 Guaratingueta, SPVLSI and Instrumentation Group Electrical Engineering Department Universidade Estadual Paulista, 12516-410 Guaratingueta, SPUniversidade Estadual Paulista (Unesp)De Lima, J. A. [UNESP]Cordeiro, A. S. [UNESP]2014-05-27T11:20:20Z2014-05-27T11:20:20Z2001-12-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObject1328-1331http://dx.doi.org/10.1109/IEMBS.2001.1020441Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings, v. 2, p. 1328-1331.0589-10191094-687Xhttp://hdl.handle.net/11449/6666510.1109/IEMBS.2001.1020441WOS:0001788719003682-s2.0-61549092832Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengAnnual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings0,283info:eu-repo/semantics/openAccess2024-07-01T20:12:24Zoai:repositorio.unesp.br:11449/66665Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T19:26:35.666171Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv A simple constant-current neural stimulator with accurate pulse-amplitude control
title A simple constant-current neural stimulator with accurate pulse-amplitude control
spellingShingle A simple constant-current neural stimulator with accurate pulse-amplitude control
De Lima, J. A. [UNESP]
title_short A simple constant-current neural stimulator with accurate pulse-amplitude control
title_full A simple constant-current neural stimulator with accurate pulse-amplitude control
title_fullStr A simple constant-current neural stimulator with accurate pulse-amplitude control
title_full_unstemmed A simple constant-current neural stimulator with accurate pulse-amplitude control
title_sort A simple constant-current neural stimulator with accurate pulse-amplitude control
author De Lima, J. A. [UNESP]
author_facet De Lima, J. A. [UNESP]
Cordeiro, A. S. [UNESP]
author_role author
author2 Cordeiro, A. S. [UNESP]
author2_role author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv De Lima, J. A. [UNESP]
Cordeiro, A. S. [UNESP]
description A simple constant-current electrocutaneous stimulator for high-impedance loads using low-cost, standard high-voltage components is presented. A voltage-regulator powers an oscillator built across the primary of a transformer whose secondary delivers, after rectification, the high-voltage supply to switched current-mirrors in the driving stage. Since the compliance high-voltage is proportional to the stimulation current, overall power consumption is minimized. By adjusting the regulated voltage, control of the pulsed-current amplitude is achieved. A prototype with readily available components features stimulation currents of amplitude and pulsewidth in the range 0≤Iskin≤20mA and 50μs ≤Tpulse≤1ms, respectively. Pulse-repetition spans from 1 Hz to 10Hz. Worst-case ripple is 3.7% @Iskin=1mA. Measured pulse fall-time is shorter than 32μs. Overall consumption is 4.4W @Iskin=20mA. Subject isolation from line is 4KV.
publishDate 2001
dc.date.none.fl_str_mv 2001-12-01
2014-05-27T11:20:20Z
2014-05-27T11:20:20Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/conferenceObject
format conferenceObject
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.1109/IEMBS.2001.1020441
Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings, v. 2, p. 1328-1331.
0589-1019
1094-687X
http://hdl.handle.net/11449/66665
10.1109/IEMBS.2001.1020441
WOS:000178871900368
2-s2.0-61549092832
url http://dx.doi.org/10.1109/IEMBS.2001.1020441
http://hdl.handle.net/11449/66665
identifier_str_mv Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings, v. 2, p. 1328-1331.
0589-1019
1094-687X
10.1109/IEMBS.2001.1020441
WOS:000178871900368
2-s2.0-61549092832
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
0,283
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 1328-1331
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
_version_ 1808129069770866688

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