SYSTEM FOR DETECTING DEFECTS IN INSULATORS IN PARTICULAR THOSE OF IGNITION PLUGS

摘要

Device for detecting damage to insulators, in particular insulators of sparking plugs, containing an outer electrode earthed through a capacitor and a detection circuit connected to a pulse counter, and an outer electrode to which a voltage is applied according to patent 145768, characterized in that the outer electrodes installed on the bodies of insulators are connected to a high voltage source (WN) through a separating impedance (ZS) and are earthed through coupling capacitors (CS).<IMAGE>