Against the backdrop of a global respiratory virus pandemic, it’s likely that more than a few readers have been thinking about pulse oximeters. You may even have looked at one closely and seen that it ...

Dr. Takuo Aoyagi, a Japanese bioengineer, was the first to invent pulse oximetry in 1974. 2 The pulse oximeter is based on the light absorption characteristics of hemoglobin at different wavelengths.

This application note discusses pulse oximeter design employing Microchip’s analog devices and dsPIC® digital signal controllers (DSCs). Pulse oximeter is a non-invasive medical device that monitors ...