This circuit is from 1969 documentation. The relay is a high voltage sensitive type. Capacitor C1 determines the timing together with the 10 M potentiometer. The maximum time is 25 seconds with the indicated capacitor.
This circuit is from 1969 documentation. The relay is a high voltage sensitive type. Capacitor C1 determines the timing together with the 10 M potentiometer. The maximum time is 25 seconds with the indicated capacitor.