True constant-current stimulators for biomedical applications.
Several designs for true constant-current stimulators are described in this paper. These designs, which include both analog signal and pulse operation, center about the LM334 integrated circuit adjustable current source. Depending upon configuration, these circuits will drive resistive-component loads varying from 500 omega to 10 k omega at current levels up to 10 mA.
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D004553:Electric Conductivity; D004599:Electric Stimulation Therapy / Q000295:instrumentation*; D006801:Humans; D008838:Microcomputers