Gas detecting and warning system

摘要: A new and improved gas detecting warning system of the type employing a metal oxide semiconductor detector device which incorporates quad comparator integrated circuit means having four independent sections. One sections is arranged with to provide digital limit operative produce an output alarm whenever voltage developed across load resistance in series exceeds predetermined value. Another section R-C timing inhibit operation for time after energization prevent false alarms during initial warm up device. The other two are cause intermittent if there failure or malfunction and/or its associated components.