EMI protected water-activated pressurized gas release apparatus

摘要

Water-activated pressurized gas release apparatus which has enhanced protection from the effects of EMI radiation which may inadvertently cause firing thereof. The apparatus is enclosed in a pair of electrically conductive casings to form a Faraday cage. An interface between the casings which may afford an EMI radiation pathway to the circuitry is blocked to the passage of EMI radiation by a portion of one of the casings which overlaps the interface as a skirt. An EMI filter is provided in the passage between the battery bore and a cavity containing electrical circuitry to shunt EMI radiation passing therein through a capacitor to ground.