SOLID STATE PROTECTOR Russian patent published in 2004 - IPC

FIELD: alarm signal generating devices such as those used for integrated safety systems. SUBSTANCE: device has metal oxide varistor, capacitor with ferroelectric ceramic insulator having diffused phase transitions, and piezoelectric mechanoelectrical transducer. Varistor and capacitor are electrically interconnected in parallel and mechanoelectrical transducer is mechanically connected in series with capacitor. Device depends for its operation on cyclic depolarization of abnormally polarized area of space and can function both as abnormal space polarization area sensor and as means protecting objects against potential danger of this area. EFFECT: enlarged functional capabilities. 1 cl, 1 dwg