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- W3032502462 abstract "Objective This paper presents the design of bipolar output and protection circuits of an electric stimulator which can generate stimulating pulse with flexible parameters.Methods The common unipohr usage of DAC was combined with operational amplifier to generate bipolar output.The comparator LM311 was used to judge the output voltage and form an interrupt signal to accomplish over-voltage protection.The Zener diodes were apphed to limit the output voltage,and a circuit consisting of transistors,diodes and resistors was applied to limit the cttrrent.Simulation of the voltage-judging circuit,the current-limit and voltage-limit circuit were realized using Multisim simulation tool.Results The experiment data are coincident with the design well.The apparatus can perform the programmable function of bipolar electronic stimulation with current and voltage protection.Conclusion This design Can perform bipolar electrical output stimulation with circuit safety protection and well coincident with the design.Key words: Electro-acupuncture; Electrical stimulation; Bipolar output; Protection circuits; Simulation by Muhisim software" @default.
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- W3032502462 date "2009-04-28" @default.
- W3032502462 modified "2023-09-23" @default.
- W3032502462 title "Design of the bipolar outputs and protection drcuits in an electric stimulator" @default.
- W3032502462 doi "https://doi.org/10.3760/cma.j.issn.1673-4181.2009.02.008" @default.
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