ALARM FOR HOUSE-BREAKING PREVENTION

摘要

FIELD: alarms for protection of safes, doors and windows. SUBSTANCE: device has pushing rod and resistor. Switch is controlled by magnetic field and has magnetic diode which output is connected to one terminal of resistor. Pushing rod is located in housing which one end is located in hole and serves as device control input. Another end of pushing rod carries permanent magnet which is spring-loaded on opposite housing side by means of spring. Sides of magnetic diode are perpendicular to axis of pushing rod. Magnetic field lines of permanent magnet run in parallel to pushing rod. Second terminal of resistor and input of magnetic diode are located in holes on opposite side of housing and are connected to power supply lines. EFFECT: increased reliability. 2 dwgc