Add MIT E-Vent to the ventilators projects
A group of MIT Engineers and American clinicians are addressing the ventilators problem and they will post Open Source design for an Emergency Ventilator That Can Be Built for $100
This page published on the 28 of march describes the operation of the MIT E-Vent https://e-vent.mit.edu/controls/operation/
Hardware Design : https://e-vent.mit.edu/controls/electrical-hardware/