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Raymond Chang Raymond Chang

Raymond Chang - PowerPoint Presentation

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Uploaded On 2016-08-05

Raymond Chang - PPT Presentation

Cornell University ECE 5030 FA2009 Pulse Oximetry Noninvasive device used to measure blood oxygen levels Can also display heart rate Photoplethysmograph with two LEDs red and IR Light absorption between ID: 433774

transimpedance amplifier red gain amplifier transimpedance gain red ratio current large power hemoglobin bandwidth absorption principle pulse divider light oximeter small circuits

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