Continuous positive airway pressure (CPAP) therapy is a common treatment for obstructive sleep apnea. A CPAP machine uses a hose and mask or nosepiece to deliver constant and steady air pressure.
I use a Respironics REMstar CPAP, at 13cm. I use the mask that didn't work for you, the ResMed Ultra Mirage. For me it works fine; it was a great improvement over their previous model of full face ...
This application note presents a reference design for the Continuous Positive Airway Pressure (CPAP) machine. This document describes the CPAP machine, its theory of operation, signal processing, ...
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