Fig. 1
From: Efficacy and safety testing of a COVID-19 era emergency ventilator in a healthy rabbit lung model
a Prototype of the FALCON ventilator, modified from the previously published design (see text for details). b Wiring schematic for the modified FALCON ventilator. 5 V/12 V five/twelve-volt power supply, COM common, EXP PWM expiratory pulse width modulator, GND ground, INSP PWM inspiratory pulse width modulator, MOT+/− positive/negative motor, NC normally closed, NO normally open, VDD voltage drain drain