A high voltage stimulator for small electrode electrocutaneous stimulation

Author

Poletto, Chris J. ; Van Doren, Clayton

Author_Institution

Dept. of Biomed. Eng., Case Western Reserve Univ., Cleveland, OH, USA

Volume

6

fYear

1997

fDate

30 Oct-2 Nov 1997

Firstpage

2415

Abstract

A high voltage stimulator has been designed to allow transcutaneous stimulation of tactile fibers of the fingertip. The output stage is based upon an improved Howland current pump topology, modified to allow high load impedances and small currents. The current output accuracy is better than 15% for 1 to 10 mA for 30 μsec pulses. The rise time for square pulses is less than 2 μsec. Common mode latch-up power supply problems are discussed

Keywords

biomedical electrodes; electric current control; feedback amplifiers; force feedback; haptic interfaces; neuromuscular stimulation; operational amplifiers; prosthetic power supplies; sensory aids; skin; telerobotics; virtual reality; 1 to 10 mA; 2 mus; common mode latch-up power supply problems; current output accuracy; dynamic range; feedback; fingertip tactile fibers; high load impedances; high voltage stimulator; improved Howland current pump topology; master op amp; pain; rise time for square pulses; sensory substitution systems; slave op amp; small currents control; small electrode electrocutaneous stimulation; telepresence; telerobotic manipulator; virtual reality; voltage to current conversion; Biomedical electrodes; Biomedical engineering; Circuit topology; Feedback; Impedance; Operational amplifiers; Performance analysis; Pulsed power supplies; Resistors; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 1997. Proceedings of the 19th Annual International Conference of the IEEE

Conference_Location

Chicago, IL

ISSN

1094-687X

Print_ISBN

0-7803-4262-3

Type

conf

DOI

10.1109/IEMBS.1997.756809

Filename

756809